rubber balloon as construction formwork used for culvert construction, drainage construction, sewer construction

rubber balloon as construction formwork used for culvert construction, drainage construction, sewer construction

PNEUMATIC TUBULAR FORM

Pneumatic tubular form is used for making concrete pre-casting formwork projects in culvert bridge construction.

Material:

Pneumatic tubular form is made from natural rubber and fabric. In general, it is formed by three layers(1+2=2layers of rubber and 1 layer fabric): inner layer is high strength synthetic polymer fabric withstanding the force from concrete and air pressure. Outer layer is vulcanized rubber. Rubber hardness is about 65Shore A to keep its excellent features, such as soft, durable, wear-resistance.

If your concrete slab is thicker, it should be manufactured in 2layers of fabric and 3layers of rubber(2+3).

Standard specification

1-      diameter from 0.2m to 3m,(round)

2-      total length from 1m to 28m(round)

3-      other specifications are also available according to clients’ request.

Technical Parameters

Working Pressure