Home default Very strong and long life: Screw and barrel are made of 38CrMoAlA, inlet mouth treated with special alloy. Very strong and long life: Screw and barrel are made of 38CrMoAlA, inlet mouth treated with special alloy. Pvc Pipe December 22, 2019 Share: Facebook Twitter Pinterest Very strong and long life: Screw and barrel are made of 38CrMoAlA, inlet mouth treated with special alloy. ... Click to read moreOthers news: Another news:
