Zhejiang Zhoushan Conical Twin Screw Barrel for PVC Pipe Sheet

=== Base Info ===

=== Description ===
PTA weldJ1 38CrMoAlA
Ni-base alloy45-58ExcellentSpecial excellent1.5~3mmUnder 10%J2 SKD61
Ni-base alloy45-58Special excellentExcellent1.5~3mmUnder 15%NitridingJ3 NitridedHV more than 800GoodGood0.25mm/