stainless steel size: 1/8"-4" pressure test:API 598 material: CF8M/1.4408, CF8/1.4308 1 piece Cangzhou Shengtong Stainless Steel Products Co. Ltd ... other products according to customers requirements.Our main products are ball valves,mini valve, check valves, globe valves, gate valves, strainers ... ANSI, API, DIN, BS, JIS, GB standards an so on. 1 piece ball valve