... : API 598 Size: 1/8 -4 stainless steel coupling O.D.M Cangzhou qiancheng Stainless Steel Products Co. Ltd. is a ... other products according to customers requirements. Our main products are ball valves,mini valve, check valves, globe valves, gate valves, strainers ... valve & fitting, quick couplings such as type A,B,C,D,E,F,DC,DP,pipe fittings such as elbow,tee ...