... 4" pressure test:API 598 material: CF8M/1.4408, CF8/1.4308 1 piece Cangzhou Shengtong Stainless Steel Products Co. ... according to customers requirements.Our main products are ball valves,mini valve, check valves, globe valves, gate valves, ... strainers, sanitary valve & fitting, quick couplings such as type A ... DIN, BS, JIS, GB standards an so on. 1 piece ball valve