Expansion Joints | Kouei Japan Trading | Get Quotation https://koueitrading.com/global Purchase tools and equipments made in Japan Mon, 18 Aug 2025 04:23:09 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.5 https://koueitrading.com/global/wp-content/uploads/2018/01/cropped-KoueiVietnam-logo-32x32.png Expansion Joints | Kouei Japan Trading | Get Quotation https://koueitrading.com/global 32 32 NK-8900 Non-Metallic Expansion joint https://koueitrading.com/global/product/nfk-nk-8900-non-metallic-expansion-joint/ Fri, 01 May 2020 09:27:31 +0000 https://koueitrading.com/global/?post_type=product&p=14231 Product Made in Japan Model: NK-8900 NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings […]

The post NK-8900 Non-Metallic Expansion joint first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-8900

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

The laminated synthetic rubber or PTFE, and heat-resistant cloth, it is the product of a variety of applications. Compared to metal, full of elasticity and supple, it is a very low reaction force and is the non-metallic.
Applicable fluid: Exhaust gas, Air, Special gas
Material: Nylon, PTFE, Synthetic rubber, Glass cloth
*Please contact us for material.

The post NK-8900 Non-Metallic Expansion joint first appeared on Kouei Japan Trading | Get Quotation.]]> NK-10000 Square Type Expansion Joint https://koueitrading.com/global/product/nfk-nk-10000-square-type-expansion-joint/ Fri, 01 May 2020 09:27:08 +0000 https://koueitrading.com/global/?post_type=product&p=14230 Product Made in Japan Model: NK-10000 expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and […]

The post NK-10000 Square Type Expansion Joint first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-10000

expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Use

These product are used for duct piping.
Fluid: Air,Exhaust Gas

U-shaped bellows (Round corner type)

Amount of expansion / contraction

Bellows Material H 50 75 100
t
Various SUS 1.0 13.5mm – –
1.2 11.5mm – –
1.5 – 20mm 32mm
2.0 – – 27mm
Esten 1.6 – 18mm 30mm
2.3 – 13mm 21mm
Pitch 50 70 80
Maximum number of Convolution 6 5 4

※Expansion / contraction amount per Convolution

U-shaped bellows(Single corner type)

Amount of expansion / contraction

H 50 75 100
t
1.2 11.5mm 25.6mm 40mm
1.5 9.2mm 20.6mm 36mm
Pitch 50 75 100
Maximum number of Convolution 3 3 3

※Expansion / contraction amount per Convolution

Bellows Material

SUS304, 316, 316L, 310S, 321, Hastelloy, Inconel, Esten

V-shaped bellows(Camera corner type)

Amount of expansion / contraction

H 50 75 100 125
t
0.8 12mm – – –
1.0 9mm 22mm 30mm 36mm
1.2 8mm 18mm 30mm 36mm
1.5 6mm 14mm 26mm 36mm
2.0 4mm 11mm 19mm 30mm
Pitch 20 30 35 40
Maximum number of Convolution 10 8 6 4

※Expansion / contraction amount per Convolution

Bellows Material

SUS304, 316, 316L, 310S, 321, Hastelloy, Inconel, Esten

The post NK-10000 Square Type Expansion Joint first appeared on Kouei Japan Trading | Get Quotation.]]> NK-8700 Pressure Balanced Expansion Joint https://koueitrading.com/global/product/nfk-nk-8700-pressure-balanced-expansion-joint/ Fri, 01 May 2020 09:26:24 +0000 https://koueitrading.com/global/?post_type=product&p=14229 Product Made in Japan Model: NK-8700 expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and […]

The post NK-8700 Pressure Balanced Expansion Joint first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-8700

expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

A pressure balanced Expansion joint is designed to absorb axial movement and/or lateral deflection while restraining the pressure thrust by means of tie devices interconnecting the flow bellows with an opposed bellows also subjected to the line.
Applicable fluid: Steam, Exhaust gas, Water, Air
Applicable bellows: MF, HF
Material: SUS304, SUS316L,
*Please contact us for material.

NK-8700

Materials

① Flange Carbon steel, Stainless Steel
② End Pipe Carbon steel, Stainless Steel
③ cap Carbon steel, Stainless Steel
④ Guide Flange Carbon steel, Stainless Steel
⑤ Spherical Washer Carbon steel, Stainless Steel
⑥ Bellows Stainless Steel
⑦ Tie Rod Carbon steel, Stainless Steel
⑧ Neck Ring Carbon steel, Stainless Steel
⑨ 90 deg Elbow Stainless Steel
⑩ Spherical Nut Carbon steel, Stainless Steel
⑪ Shipping Bolt Carbon steel, Stainless Steel
The post NK-8700 Pressure Balanced Expansion Joint first appeared on Kouei Japan Trading | Get Quotation.]]> NK-8600 In-Line Pressure Balanced Expansion Joint https://koueitrading.com/global/product/nfk-nk-8600-in-line-pressure-balanced-expansion-joint/ Fri, 01 May 2020 09:25:52 +0000 https://koueitrading.com/global/?post_type=product&p=14228 Product Made in Japan Model: NK-8600 Steelmaking, chemical, and industrial plants use expansion joints in gas and liquid transport system lines to carry substances such as air, water, gases, steam, oil, and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also […]

The post NK-8600 In-Line Pressure Balanced Expansion Joint first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-8600

Steelmaking, chemical, and industrial plants use expansion joints in gas and liquid transport system lines to carry substances such as air, water, gases, steam, oil, and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

Engineers design in-line pressure balanced expansion joints to absorb axial movement and/or lateral deflection while restraining pressure thrust using tie devices that interconnect the line pressure. Each bellows set absorbs axial movement, while the line bellows typically absorb lateral deflection. Operators install this type of expansion joint in straight runs of piping.
Applicable fluid: Steam, Exhaust gas, Water, Air
Applicable bellows: MF, HF
Material: SUS304, SUS316L,
*Please contact us for material.

NK-8600

Materials

① Flange Carbon steel, Stainless Steel
② End Pipe Carbon steel, Stainless Steel
③ Beam Carbon steel, Stainless Steel
④ Guide Flange Carbon steel, Stainless Steel
⑤ Reinforcing Ring Carbon steel, Stainless Steel
⑥ Expansion Bellows Stainless Steel
⑦ Tie Rod Carbon steel, Stainless Steel
⑧ Neck Ring Carbon steel, Stainless Steel
⑨ Spherical Washer Carbon steel, Stainless Steel
⑩ Inner Sleeve Carbon steel, Stainless Steel
⑪ Shipping Bolt Carbon steel, Stainless Steel
⑫ Holder Carbon steel, Stainless Steel
⑬ Blance Bellows Stainless Steel
The post NK-8600 In-Line Pressure Balanced Expansion Joint first appeared on Kouei Japan Trading | Get Quotation.]]> NK-6800 Expansion Joints (Standard Double Bellows Type) https://koueitrading.com/global/product/nfk-nk-6800-expansion-joints-standard-double-bellows-type/ Fri, 01 May 2020 08:56:39 +0000 https://koueitrading.com/global/?post_type=product&p=14222 Product Made in Japan Model: NK-6800 NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings […]

The post NK-6800 Expansion Joints (Standard Double Bellows Type) first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-6800

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

This is connected the bellows of two, and then bigger move than a single type.
Applicable fluid: Exhaust gas, Air, Low-pressure steam, Water
Applicable bellows: MF, HF, iO, E
Material: SUS304, SUS316L, *Please contact us for material.
Standard: JIS, ANSI, DIN

Specification

Drawing

NK-6800

Materials

① Bellows Stainless Steel
② End Pipe Carbon steel, Stainless Steel
③ Flange Carbon steel, Stainless Steel
④ Holder Carbon steel, Stainless Steel
⑤ Shipping Bolt Carbon steel, Stainless Steel
⑥ Common Connecter Carbon steel, Stainless Steel

Specification table

X = Axial Movement

DN Length(mm)
Y=50 Y=100 Y=150 Y=200 Y=250 Y=300
50 600 800 950 1100 1300 1500
65 600 750 850 1000 1100 1250
80 700 800 950 1100 1200 1300
100 600 800 1000 1150 1250 1350
125 650 850 950 1100 1250 1400
150 700 850 1050 1200 1350 1500
200 800 1000 1200 1350 1500 1700
250 800 1100 1350 1550 1700 1900
300 850 1150 1400 1700 1900 2100
350 850 1150 1400 1700 1900 2100
400 900 1200 1500 1750 1950 2200
450 950 1250 1550 1800 2050 2300
500 900 1200 1400 1650 1850 2000
550 950 1250 1500 1700 1900 2100
600 1000 1300 1550 1800 1950 2200
The post NK-6800 Expansion Joints (Standard Double Bellows Type) first appeared on Kouei Japan Trading | Get Quotation.]]> Expansion Joints NK-7000/NK-7100 Reinforcing Ring Type https://koueitrading.com/global/product/expansion-joints-nk-7000-nk-7100-reinforcing-ring-type/ Fri, 01 May 2020 08:56:28 +0000 https://koueitrading.com/global/?post_type=product&p=14221 Product Made in Japan Model: NK-7000/ NK-7100 NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in […]

The post Expansion Joints NK-7000/NK-7100 Reinforcing Ring Type first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-7000/ NK-7100

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature NK-7000

To cope with high-pressure piping, this product is fitted with a reinforcing ring bellows.
NK-7000 is single bellows NK-7100 is double bellows.
NK-7100 is double bellows.
Applicable fluid: Steam, High-pressure gas, Water, Air
Applicable bellows: MF, HF
Material: SUS304, SUS316L,
*Please contact us for material.
Standard: JIS, ANSI, DIN

Specification

NK-7000


NK-7100NK-7000, NK-7100

Materials NK-7000

1 Bellows Stainless Steel
2 End Pipe Carbon steel, Stainless Steel
3 Inner Sleeve Stainless Steel
4 Flange Carbon steel, Stainless Steel
5 Reinforcing Ring Carbon steel, Stainless Steel
6 Neck Ring Carbon steel, Stainless Steel
7 Beam Carbon steel, Stainless Steel
8 Tie Rod Carbon steel, Stainless Steel
9 Stopper Carbon steel, Stainless Steel
10 Shipping Bolt Carbon steel, Stainless Steel

Specification table NK-7000

X = Axial Movement

DN Length(mm)
X=30 X=40 X=50 X=60 X=80 X=100
50 560 690 820 960 1370 1630
65 450 540 640 730 1070 1260
80 600 720 820 900 1330 1550
100 560 680 800 900 1320 1550
125 500 560 650 710 860 1380
150 500 560 650 710 860 1380
200 520 580 670 710 860 1380
250 520 580 670 710 860 1380
300 520 580 670 710 860 1380
350 520 580 680 780 1020 1200
400 520 580 680 780 1020 1200
450 540 600 700 800 1030 1230
500 520 590 660 730 870 1160

 

The post Expansion Joints NK-7000/NK-7100 Reinforcing Ring Type first appeared on Kouei Japan Trading | Get Quotation.]]> NFK NK-7500・NK-7700 Expansion Joints (Outer-Cylinder Type) https://koueitrading.com/global/product/nfk-nk-7500%e3%83%bbnk-7700-expansion-joints-outer-cylinder-type/ Fri, 01 May 2020 08:56:12 +0000 https://koueitrading.com/global/?post_type=product&p=14220 Product Made in Japan Manufacturer: NFK Model: NK-7500, NK-7700 NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation […]

The post NFK NK-7500・NK-7700 Expansion Joints (Outer-Cylinder Type) first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Manufacturer: NFK
Model: NK-7500, NK-7700

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

This product wraps a bellows in an inner cylinder and an outer cylinder, and has a structure that does not carry out compression buckling that if it’s big axial move.
NK-7500 is Single bellows
NK-7700 is Double bellows
Applicable fluid: Steam, Exhaust gas, Water, Air
Applicable bellows: MF, HF
Material: SUS304, SUS316L,
*Please contact us for material.
Standard: JIS, ANSI, DIN

Specification

Drawing

NK-7500

NK-7700

Materials

① Bellows Stainless Steel
② Inner Sleeve Stainless Steel
③ Outer Cylinder Carbon steel, Stainless Steel
④ End Pipe Carbon steel, Stainless Steel
⑤ Flange Carbon steel, Stainless Steel
⑥ Neck Ring Carbon steel, Stainless Steel
⑦ Middle Ring Carbon steel, Stainless Steel
⑧ Tie Rod Carbon steel, Stainless Steel
⑨ Holder Carbon steel, Stainless Steel

Specification table

X = Axial Movement

DN Length(mm)
X=30 X=40 X=50 X=60 X=80 X=100
50 560 690 820 960 1370 1630
65 450 540 640 730 1070 1260
80 600 720 820 900 1330 1550
100 560 680 800 900 1320 1550
125 500 560 650 710 860 1380
150 500 560 650 710 860 1380
200 520 580 670 710 860 1380
250 520 580 670 710 860 1380
300 520 580 670 710 860 1380
350 520 580 680 780 1020 1200
400 520 580 680 780 1020 1200
450 540 600 700 800 1030 1230
500 520 590 660 730 870 1160
The post NFK NK-7500・NK-7700 Expansion Joints (Outer-Cylinder Type) first appeared on Kouei Japan Trading | Get Quotation.]]> NK-7900, NK-7900E Expansion Joints (Compact And Light Type) https://koueitrading.com/global/product/nfk-nk-7900-nk-7900e-expansion-joints-compact-and-light-type/ Fri, 01 May 2020 08:20:21 +0000 https://koueitrading.com/global/?post_type=product&p=14214 Product Made in Japan Model: NK-7900, NK-7900E NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in […]

The post NK-7900, NK-7900E Expansion Joints (Compact And Light Type) first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-7900, NK-7900E

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

This product welds inside of flange to a bellows. Light & Compact.
Applicable bellows: Exhaust gas, Special gas, Air, water
Applicable bellows: iO, E
Material: SUS304 SUS316L SUS310S
*Please contact us for material.
Standard: JIS, ANSI, DIN

Specification

Drawing

NK-7900

 

 

Materials

① Bellows Stainless Steel
② Flange Carbon steel, Stainless Steel

*You can add Internal Sleeve and Shipping Bolt as options if you need.

Bellows for NK-7900E E Bellows

DN Thickness(mm) ID(mm) Convolution Height(mm) Pitch(mm) Expansion / contraction amount per Convolution(mm) Resisting
pressure(N/mm)
20 0.2 28.6 4.7 4.0 0.60 373.3
25 0.2 35.6 5.5 4.0 0.75 310.3
32 0.2 44.1 6.7 5.0 1.10 209.1
40 0.2 50.1 6.9 5.0 1.15 217.8
50 0.2 62.1 7.4 5.0 1.25 222.6
65 0.2 78.4 9.0 6.5 1.85 150.3
80 0.3 90.9 10.0 6.5 1.55 450.4
100 0.3 116.2 10.0 7.5 1.65 524.3
125 0.3 141.9 10.0 7.5 1.65 630.6
150 0.3 167.4 11.0 7.5 1.90 583.3
200 0.3 218.7 11.0 7.5 1.90 750.5
250 0.3 270.4 13.0 10.0 2.70 527.8
300 0.3 319.9 13.0 10.0 2.70 619.8
350 0.4 356.0 15.0 13.0 2.70 1268.0

Bellows for NK-7900 iO Bellows

DN Bellows Size(mm) Production possible Convolution Resisting
pressure(N/mm)		 Expansion / contraction amount per Convolution(mm) Effective cross section(㎟)
Thickness Convolution Height Pitch ID
20 0.3 4.7 6.0 27.0 32 1352.8 0.45 819.4
25 0.3 5.5 6.3 33.5 32 1092.6 0.55 1228.5
32 0.3 6.7 7.0 42.0 32 787.9 0.75 1908.9
40 0.35 6.9 7.5 47.5 32 1255.1 0.75 2384.5
50 0.35 7.4 8.5 59.5 32 1214.4 0.90 3589.1
65 0.4 9.6 9.5 75.0 25 1130.0 1.20 5728.0
80 0.4 10.6 10.5 88.0 25 976.6 1.40 7760.0
100 0.4 10.6 10.5 113.0 25 888.5 1.60 12449.2
125 0.5 11.0 12.0 138.0 38 4941.2 1.40 17671.5
150 0.5 13.0 15.0 164.0 30 3450.5 1.80 24884.6
200 0.5 13.0 15.0 216.0 30 2216.8 1.80 41547.6
250 0.5 16.0 18.0 268.0 25 1492.2 2.70 63794.0
300 0.5 18.0 20.0 317.0 22 1243.2 3.50 88668.3
350 0.6 18.0 20.0 356.0 22 2398.9 3.00 110564.5
400 0.6 23.0 25.0 406.0 17 1333.0 4.70 145355.2
450 0.6 23.0 25.0 456.0 17 2983.2 4.70 181106.6
500 0.6 23.0 25.0 507.0 14 1645.9 5.90 225978.7
550 0.8 32.0 35.0 558.0 12 1803.9 7.80 270992.8
600 0.8 32.0 35.0 609.0 12 1747.0 7.80 320092.6
650 0.8 32.0 35.0 660.0 12 1885.6 7.80 377622.2
700 0.8 32.0 35.0 710.0 12 2021.6 7.00 434278.8
750 0.8 32.0 35.0 762.0 12 2162.9 7.00 497140.8
800 0.8 36.0 40.0 812.0 9 1609.5 8.70 566916.2
850 0.8 36.0 40.0 864.0 9 1708.0 8.70 638436.5
900 0.8 36.0 40.0 914.0 9 1802.7 8.70 711211.5
1000 0.8 40.0 45.0 1015.0 8 1450.2 10.50 876821.3
1100 0.8 40.0 45.0 1117.6 8 1590.9 10.50 1055374.6
1200 0.8 40.0 45.0 1219.2 8 1730.4 10.50 1248482.0
1350 0.8 40.0 45.0 1371.6 8 1939.6 10.50 1568545.6
1500 0.8 40.0 45.0 1524.0 8 2148.7 10.50 1925092.1

The post NK-7900, NK-7900E Expansion Joints (Compact And Light Type) first appeared on Kouei Japan Trading | Get Quotation.]]> Expansion Joints NK-7300/NK-7300E For Exhaust Gas https://koueitrading.com/global/product/expansion-joints-nk-7300-nk-7300e-for-exhaust-gas/ Fri, 01 May 2020 08:19:56 +0000 https://koueitrading.com/global/?post_type=product&p=14216 Product Made in Japan Model: NK-7300/NK-7300E NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings […]

The post Expansion Joints NK-7300/NK-7300E For Exhaust Gas first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-7300/NK-7300E

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

This product is non welding. Production of short face-to-face can be a structure in which to flare the flange end face the bellows.
Applicable fluid: Exhaust gas Air Low pressure steam Water
Applicable bellows: iO, E
Material: SUS304 SUS316L SUS310S
*Please contact us for material.
Standard：JIS, ANSI, DIN

Specification

NK-7300

 

Materials

1 Bellows Stainless Steel
2 Inner Sleeve Stainless Steel
3 Flange Carbon steel, Stainless Steel
4Shipping Bolt Carbon steel, Stainless Steel
5Holder Carbon steel, Stainless Steel

Bellows for NK-7300E E Bellows

Nominal diameter Thickness(mm) ID(mm) Convolution Height(mm) Pitch(mm) Expansion / contraction amount per Convolution(mm) Spring Rate(N/mm)
20 0.2 28.6 4.7 4.0 0.60 373.3
25 0.2 35.6 5.5 4.0 0.75 310.3
32 0.2 44.1 6.7 5.0 1.10 209.1
40 0.2 50.1 6.9 5.0 1.15 217.8
50 0.2 62.1 7.4 5.0 1.25 222.6
65 0.2 78.4 9.0 6.5 1.85 150.3
80 0.3 90.9 10.0 6.5 1.55 450.4
100 0.3 116.2 10.0 7.5 1.65 524.3
125 0.3 141.9 10.0 7.5 1.65 630.6
150 0.3 167.4 11.0 7.5 1.90 583.3
200 0.3 218.7 11.0 7.5 1.90 750.5
250 0.3 270.4 13.0 10.0 2.70 527.8
300 0.3 319.9 13.0 10.0 2.70 619.8
350 0.4 356.0 15.0 13.0 2.70 1268.0

Bellows for NK-7300 iO Bellows

DN Bellows Size(mm) Production possible Convolution Spring Rate(N/mm) Expansion / contraction amount per Convolution(mm) Effective cross section(㎟)
Thickness Convolution Height Pitch ID
20 0.3 4.7 6.0 27.0 32 1352.8 0.45 819.4
25 0.3 5.5 6.3 33.5 32 1092.6 0.55 1228.5
32 0.3 6.7 7.0 42.0 32 787.9 0.75 1908.9
40 0.35 6.9 7.5 47.5 32 1255.1 0.75 2384.5
50 0.35 7.4 8.5 59.5 32 1214.4 0.90 3589.1
65 0.4 9.6 9.5 75.0 25 1130.0 1.20 5728.0
80 0.4 10.6 10.5 88.0 25 976.6 1.40 7760.0
100 0.4 10.6 10.5 113.0 25 888.5 1.60 12449.2
125 0.5 11.0 12.0 138.0 38 4941.2 1.40 17671.5
150 0.5 13.0 15.0 164.0 30 3450.5 1.80 24884.6
200 0.5 13.0 15.0 216.0 30 2216.8 1.80 41547.6
250 0.5 16.0 18.0 268.0 25 1492.2 2.70 63794.0
300 0.5 18.0 20.0 317.0 22 1243.2 3.50 88668.3
350 0.6 18.0 20.0 356.0 22 2398.9 3.00 110564.5
400 0.6 23.0 25.0 406.0 17 1333.0 4.70 145355.2
450 0.6 23.0 25.0 456.0 17 2983.2 4.70 181106.6
500 0.6 23.0 25.0 507.0 14 1645.9 5.90 225978.7
550 0.8 32.0 35.0 558.0 12 1803.9 7.80 270992.8
600 0.8 32.0 35.0 609.0 12 1747.0 7.80 320092.6
650 0.8 32.0 35.0 660.0 12 1885.6 7.80 377622.2
700 0.8 32.0 35.0 710.0 12 2021.6 7.00 434278.8
750 0.8 32.0 35.0 762.0 12 2162.9 7.00 497140.8
800 0.8 36.0 40.0 812.0 9 1609.5 8.70 566916.2
850 0.8 36.0 40.0 864.0 9 1708.0 8.70 638436.5
900 0.8 36.0 40.0 914.0 9 1802.7 8.70 711211.5
1000 0.8 40.0 45.0 1015.0 8 1450.2 10.50 876821.3
1100 0.8 40.0 45.0 1117.6 8 1590.9 10.50 1055374.6
1200 0.8 40.0 45.0 1219.2 8 1730.4 10.50 1248482.0
1350 0.8 40.0 45.0 1371.6 8 1939.6 10.50 1568545.6
1500 0.8 40.0 45.0 1524.0 8 2148.7 10.50 1925092.1
The post Expansion Joints NK-7300/NK-7300E For Exhaust Gas first appeared on Kouei Japan Trading | Get Quotation.]]> NK-6900 Expansion Joints (General-Purpose Type) https://koueitrading.com/global/product/nfk-nk-6900-expansion-joints-general-purpose-type/ Fri, 01 May 2020 08:19:21 +0000 https://koueitrading.com/global/?post_type=product&p=14215 Product Made in Japan Model: NK-6900 NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings […]

The post NK-6900 Expansion Joints (General-Purpose Type) first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-6900

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

This product is high-performance.
Applicable fluid: Exhaust gas Air Low pressure steam Water
Applicable bellows: MF
Material: SUS304 SUS316L SUS310S
*Please contact us for material.
Standard: JIS, ANSI, DIN

Specification

Drawing

NK-6900

Materials

① Flange Carbon steel, Stainless Steel
② End Pipe Carbon steel, Stainless Steel
③ Inner Sleeve Stainless Steel
④ Bellows Stainless Steel
⑤ Shipping Bolt Carbon steel, Stainless Steel
⑥ Holder Carbon steel, Stainless Steel

Specification table

X = Axial Movement

DN Length(mm) Resisting
pressure
X=15 X=20 X=30 X=40 Mpa
100 200 250 350 430 0.3
125 200 220 300 370 0.25
150 200 240 300 350 0.2
200 210 260 300 370 0.18
250 250 250 310 370 0.19
300 250 250 310 370 0.19
The post NK-6900 Expansion Joints (General-Purpose Type) first appeared on Kouei Japan Trading | Get Quotation.]]> NK-6X00 Expansion Joints (General-Purpose Type) https://koueitrading.com/global/product/nk-6x00-expansion-joints-general-purpose-type/ Fri, 01 May 2020 07:50:58 +0000 https://koueitrading.com/global/?post_type=product&p=14212 Product Made in Japan Model: NK-6X00 NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings […]

The post NK-6X00 Expansion Joints (General-Purpose Type) first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-6X00

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

This product welds a pipe to a bellows.
Applicable fluid: Exhaust gas Air Low pressure steam Water
Applicable bellows: MF,iO
Material: SUS304 SUS316L SUS310S
*Please contact us for material.
Standard: JIS, ANSI, DIN

Specification

Drawing

NK-6500

NK-6500

Materials

① Bellows Stainless Steel
② End Pipe Carbon steel, Stainless Steel
③ Inner Sleeve Stainless Steel
④ Flange Carbon steel, Stainless Steel
⑤ Holder Carbon steel, Stainless Steel
⑥ Shipping Bolt Carbon steel, Stainless Steel

NK-6600

Materials

① Bellows Stainless Steel
② End Pipe Carbon steel, Stainless Steel
③ Inner Sleeve Stainless Steel
④ Flange Carbon steel, Stainless Steel

NK-6700

Materials

① Bellows Stainless Steel
② End Pipe Carbon steel, Stainless Steel
③ Inner Sleeve Stainless Steel

Specification table

X = Axial Movement

DN Length(mm) Resisting
pressure
X=10 X=15 X=20 X=25 X=30 Mpa
50 230 290 350 1.0
65 175 220 250 300 330 0.5
80 200 250 310 360 400 0.9
90 200 250 310 360 400 0.9
100 200 260 300 360 400 0.8
125 220 250 280 340 370 0.5
150 220 250 280 340 370 0.5
175 220 250 280 340 370 0.5
200 220 250 280 340 370 0.5
250 220 250 280 340 370 0.5
300 240 270 300 360 390 0.5
350 230 270 310 350 390 0.45
400 230 270 310 350 390 0.45
450 230 270 310 350 390
500 250 300 350
550 250 300 350
600 250 300 350
The post NK-6X00 Expansion Joints (General-Purpose Type) first appeared on Kouei Japan Trading | Get Quotation.]]> NK-7000, NK-7100 Expansion Joints (Reinforcing Ring Type) https://koueitrading.com/global/product/nk-7000-nk-7100-expansion-joints-reinforcing-ring-type/ Wed, 01 Apr 2020 04:57:30 +0000 https://koueitrading.com/global/?post_type=product&p=143190 Product Made in Japan Model: NK-7000, NK-7100 NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in […]

The post NK-7000, NK-7100 Expansion Joints (Reinforcing Ring Type) first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-7000, NK-7100

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature NK-7000

To cope with high-pressure piping, this product is fitted with a reinforcing ring bellows.
NK-7000 is single bellows NK-7100 is double bellows.
NK-7100 is double bellows.
Applicable fluid: Steam, High-pressure gas, Water, Air
Applicable bellows: MF, HF
Material: SUS304, SUS316L,
*Please contact us for material.
Standard: JIS, ANSI, DIN

Specification

Drawing

NK-7000

NK-7100

NK-7000, NK-7100

Materials NK-7000

① Bellows Stainless Steel
② End Pipe Carbon steel, Stainless Steel
③ Inner Sleeve Stainless Steel
④ Flange Carbon steel, Stainless Steel
⑤ Reinforcing Ring Carbon steel, Stainless Steel
⑥ Neck Ring Carbon steel, Stainless Steel
⑦ Beam Carbon steel, Stainless Steel
⑧ Tie Rod Carbon steel, Stainless Steel
⑨ Stopper Carbon steel, Stainless Steel
⑩ Shipping Bolt Carbon steel, Stainless Steel

Specification table NK-7000

X = Axial Movement

DN Length(mm)
X=30 X=40 X=50 X=60 X=80 X=100
50 560 690 820 960 1370 1630
65 450 540 640 730 1070 1260
80 600 720 820 900 1330 1550
100 560 680 800 900 1320 1550
125 500 560 650 710 860 1380
150 500 560 650 710 860 1380
200 520 580 670 710 860 1380
250 520 580 670 710 860 1380
300 520 580 670 710 860 1380
350 520 580 680 780 1020 1200
400 520 580 680 780 1020 1200
450 540 600 700 800 1030 1230
500 520 590 660 730 870 1160
The post NK-7000, NK-7100 Expansion Joints (Reinforcing Ring Type) first appeared on Kouei Japan Trading | Get Quotation.]]> NK-7500, NK-7700 Expansion Joints (Outer-Cylinder Type) https://koueitrading.com/global/product/nk-7500-nk-7700-expansion-joints-outer-cylinder-type/ Wed, 01 Apr 2020 04:52:43 +0000 https://koueitrading.com/global/?post_type=product&p=143186 Product Made in Japan Model: NK-7500, NK-7700 NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in […]

The post NK-7500, NK-7700 Expansion Joints (Outer-Cylinder Type) first appeared on Kouei Japan Trading | Get Quotation.]]> Product Made in Japan
Model: NK-7500, NK-7700

NFK expansion joints are used in gas and liquid transport system lines used by steel making, chemical and industrial plants to transport substances such as air, water, gases, steam, oil and exhaust gases. They can compensate for expansion and contraction caused by temperature differences in air-conditioning/sanitation lines in buildings and other structures. They also handle conditions such as line center misalignment, vibrations, foundation subsidence and earthquakes.

Feature

This product wraps a bellows in an inner cylinder and an outer cylinder, and has a structure that does not carry out compression buckling that if it’s big axial move.
NK-7500 is Single bellows
NK-7700 is Double bellows
Applicable fluid: Steam, Exhaust gas, Water, Air
Applicable bellows: MF, HF
Material: SUS304, SUS316L,
*Please contact us for material.
Standard: JIS, ANSI, DIN

Specification

Drawing

NK-7500

NK-7700

Materials

① Bellows Stainless Steel
② Inner Sleeve Stainless Steel
③ Outer Cylinder Carbon steel, Stainless Steel
④ End Pipe Carbon steel, Stainless Steel
⑤ Flange Carbon steel, Stainless Steel
⑥ Neck Ring Carbon steel, Stainless Steel
⑦ Middle Ring Carbon steel, Stainless Steel
⑧ Tie Rod Carbon steel, Stainless Steel
⑨ Holder Carbon steel, Stainless Steel

Specification table

X = Axial Movement

DN Length(mm)
X=30 X=40 X=50 X=60 X=80 X=100
50 560 690 820 960 1370 1630
65 450 540 640 730 1070 1260
80 600 720 820 900 1330 1550
100 560 680 800 900 1320 1550
125 500 560 650 710 860 1380
150 500 560 650 710 860 1380
200 520 580 670 710 860 1380
250 520 580 670 710 860 1380
300 520 580 670 710 860 1380
350 520 580 680 780 1020 1200
400 520 580 680 780 1020 1200
450 540 600 700 800 1030 1230
500 520 590 660 730 870 1160
The post NK-7500, NK-7700 Expansion Joints (Outer-Cylinder Type) first appeared on Kouei Japan Trading | Get Quotation.]]>