... ,STD,SCH40,SCH60,XS,SCH100,SCH120,SCH40,SCH160,XXSManufacture processforging,casting,pressing,pushingMain MaterialCarbon steel tee, stainless steel tee, alloy steel ... chemical,civil construction, machinery manufacturing, shipping industry etc\Zhongcheng Valve Co., Ltd. is a professional manufacturer of parallel slide valves, eject valves ...