Plastic PVC CPVC PP PVDF Pneumatic Electric Flange True Union Ball Valve/Wcb/Stainless Steel Weir Type Diaphragm Valve /Hand Butterfly Valve/ Swing Check Valve

When welding the flange, the transverse contraction of the weld is easy to cause the deformation of the flange, so the corresponding technological measures must be taken to control the welding quality and deformation of the flange during the welding process.