Hokkai Paper Tube Inc
Hokkai Paper Tube Tube
Manufacturer: Hokkai Paper Tube Co., Ltd.
Product name: Tube
Perfectly circular, ideal for making vertical cylinders
It is a molded product with a perfect cylinder, so you can create an accurate cylinder by pouring concrete into it. It has a reference line, so it can be easily centered on-site.
Easy peeling and surface finishing
The inner surface is treated with a special film to facilitate easy peeling of the concrete, and becomes the finished surface of the cylinder as is.
High strength, pressure resistance, and workability
Hokkai Void is a product made by rolling up several layers of special waterproof base paper into a cylinder, so it is strong enough to withstand the pressure of pouring concrete. It can also be easily cut with a saw or processed by nailing.
Standard
| Inner diameter (mm) |
250 | 300 | 350 | 400 | 450 | 500 | 550 | 600 | 650 | 700 | 750 | 800 | 850 | 900 | 950 | 1,000 | 1,100 | 1,200 | 1,300 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Outer diameter (mm) |
258 | 310 | 362 | 414 | 465 | 516 | 567 | 618 | 670 | 720 | 770 | 833 | 872 | 922 | 974 | 1,024 | 1,126 | 1,228 | 1,330 |
| Wall thickness (mm) |
4.0 | 5.0 | 6.0 | 7.0 | 7.5 | 8.0 | 8.5 | 9.0 | 10.0 | 10.0 | 10.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 14.0 | 15.0 |
| Weight (kg/4m) |
10.5 | 15.2 | 22.3 | 29.8 | 36.1 | 41.5 | 48.9 | 54.4 | 62.0 | 69.0 | 74.6 | 83.3 | 89.0 | 94.5 | 103.5 | 109.0 | 130.0 | 155.0 | 185.0 |
| Length (mm) |
4,000 | ||||||||||||||||||
Various order production
We also offer two-piece processing.
We also accept orders for splitting into two pieces so that it can be used on RC and SRC construction sites.
Long items, cut processing
Hokkai Void can also be manufactured to the required length upon order.
Precautions for installation and storage
Internal protection during lowering
When lowering the Hokkai Void, cover the top of the rebar with a sheet to prevent the rebar from damaging the inside. In addition, we recommend covering the rebar with a curing sheet until the ready-mix concrete is poured.
Precautions when pouring ready mixed concrete
The inside of Hokkai Void is laminated, so when pouring ready-mix concrete, pour it into the center of the tube so as not to let it come into direct contact with the inside surface, and be careful not to damage the inside surface.
Be careful not to get wet or distorted.
If you store it outdoors, cover it with a sheet to prevent it from getting wet from rainwater, etc. Also, if you leave it leaning at an angle for a long time, it may become distorted. Please store it in a flat place indoors that is as dry as possible.
Be careful of impacts and weight
Hokkai Void is strong enough not to break or deform during construction, but please be careful not to subject it to impacts such as excessive loads or dropping heavy objects on it.
Waterproofing the cut surface
Use tape or waterproofing material to waterproof the cut edges of the Hokkai Void and any nailed areas.
Fire Caution
Hokkaivoid is flammable. Please be careful when using open flames near it.
Use Cases
- As a cylindrical and columnar formwork material, it helps reduce labor and streamline concrete construction work.
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