... :304,304L,316,316L 3.CNC lathe process 4.API&ISO certification BSP thread ss socket banded..As the professional stainless steel ... ,tee, red tee, hex nipple, hex bushing, hex cap, hex plug, weld nipple, barrel nipple, union conical f/f, elbow union ... low price.Descrition of socket banded:ProductStainless Steel Socket BandedThe thread ends standardASME B 1.20.1(NPT) DIN 2999&BS21ISO228 ...