... on, welding neck, blind, thread, socket weld flangeProcess: free forging, plate cutting, heat treat, machiningSurface Treat: Anti-rust Oil, ... :A105,SS400,SF440,RST37.2,S235,C22.8Zhangqiu Shengli Forging Co., Ltd. is located in the beautiful and ... complete technical information, has a set of high-quality forging, machining, assembly, inspection, packaging productionPaul JingSales manager Ring Joint ...