... supply free sample durable CAMLOCK COUPLING/QUICK COUPLINGStainless steel quick coupling type A,B,C,D, ... 90,tee,cross,union,cap,socket,coupling,plug,nipple,bushing etc.3.Quick coupling: type A,B ... ,C,D,E,F,DC,DP4.Forged fittings and flanges:butt-weld elbow,tee,cap ... ,150-3000LBS flanges etc.5.All kind of metal products,design and develop for customers special demands. quick ...