... /1.4308;WCB; The fittings are designed and manufactured according to international standards such as ANSI,API,DIN,BS,GB,JIS ... . Design & Manufacture Std.: API608, ASME B16.34, API6D, BS5351 Face to Face Std.: ASMEB16.10 (JISB2002),API 6D, DIN3202, ASME B16 ... ,check valve,strainer etc.2.Pipe fittings:elbow 45,elbow 90,tee,cross,union,cap,socket,coupling,plug,nipple,bushing etc.3 ...