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NFK NK-6500・NK-6600・NK-6700 Expansion Joints (General-Purpose Type)

Product Made in Japan
Manufacturer: NFK
Model: NK-6500, NK-6600, NK-6700

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

Materials

① BellowsStainless Steel
② End PipeCarbon steel, Stainless Steel
③ Inner SleeveStainless Steel
④ FlangeCarbon steel, Stainless Steel
⑤ HolderCarbon steel, Stainless Steel
⑥ Shipping BoltCarbon steel, Stainless Steel

NK-6600

Materials

① BellowsStainless Steel
② End PipeCarbon steel, Stainless Steel
③ Inner SleeveStainless Steel
④ FlangeCarbon steel, Stainless Steel

NK-6700

Materials

① BellowsStainless Steel
② End PipeCarbon steel, Stainless Steel
③ Inner SleeveStainless Steel

Specification table

X = Axial Movement

DNLength(mm)Resisting
pressure
X=10X=15X=20X=25X=30Mpa
502302903501.0
651752202503003300.5
802002503103604000.9
902002503103604000.9
1002002603003604000.8
1252202502803403700.5
1502202502803403700.5
1752202502803403700.5
2002202502803403700.5
2502202502803403700.5
3002402703003603900.5
3502302703103503900.45
4002302703103503900.45
450230270310350390
500250300350
550250300350
600250300350

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