... 3.CNC lathe process 4.API&ISO certification socket banded,standard wall,sch40.As the professional stainless steel pipe fittings manufacturer ... ,tee, red tee, hex nipple, hex bushing, hex cap, hex plug, weld nipple, barrel nipple, union conical f/f, elbow union ... ,316L,301,430ETCSize1/8”-4”Design drawings: Samples: socket banded,standard wall,sch40