Hokkai Paper Tube Sleeve Tube

Manufacturer: Hokkai Paper Tube Co., Ltd.
Product name: Sleeve Tube

Lightweight, easy to handle, and excellent workability

It is light and easy to handle, and can be easily processed, such as by cutting, which helps to reduce labor in on-site work.

Improved quality with resin surface treatment

Hokkai Void reduces the adhesion of paper to concrete, reduces the transfer of letters, and has excellent water resistance.

It has a wide range of uses and can be used for a variety of things

It can be used for a wide range of purposes, including various pipes, wiring sleeves, dust chutes, drainage culverts, anchor boxes, and interior decoration.

Standard

Inner diameter (mm)	50	75	90	100	125	150	175	200	225	250	300
Outer diameter (mm)	54	80	96	106	132	157	182	208	233	258	310
Wall thickness (mm)	2.0	2.5	3.0	3.0	3.5	3.5	3.5	4.0	4.0	4.0	5.0
Weight (kg/4m)	1.2	2.2	2.8	3.1	4.3	5.5	6.8	8.2	9.6	10.5	15.2
Length (mm)	Hokkaido standard is 2,000 / Honshu standard is 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

Before pouring the concrete, we set up the void and apply pipe sealing tape to the cut edge to prevent the concrete from flowing into the void and to create a through hole for the pipes.