... COUPLING/QUICK COUPLINGStainless steel quick coupling type A,B,C,D,E,F,DC,DP:1 Size: 1/2 ... WCB; The fittings are designed and manufactured according to international standards such as ANSI,API,DIN,BS ... Manufacture Std.: API608, ASME B16.34, API6D, BS5351 Face to Face Std.: ASMEB16.10 (JISB2002),API 6D, DIN3202, ASME ... nipple,bushing etc.3.Quick coupling: type A,B,C,D,E,F,DC,DP4.Forged fittings and flanges ...