Culvert Formwork Inflatable Rubber Balloon 900mm×12m

Culvert Balloons Construction practice proves that culvert rubber airbag is simple, not only save materials. And has a shape characteristics, it could be round, Oval, rectangle, vaulted, trapezoidal pipeline. etc. Also you can make a straight hole, etc. can make a building structure light, thin wall hollow. Change the concrete performance have been used rigid characteristic template situation.