... & sizing machine and induction high frequency welding equipment ERW welded pipe making machine: to make welded pipes by forming & sizing ... machine and induction high frequency welding equipmentModel of welded pipe machine:Φ20,Φ32,Φ50,Φ76, Φ89,Φ114,Φ165,Φ219,Φ327 ... ,Φ426,Φ508....Actually, the models are not fixed, the production of pipe machine is accordance with customer's requirement.your ...