socket weld s.s elbow,forged steel pipe fittings size: 1/8"---4" thread:NPT,BSPT,BSPP ... , 2000, 2500, 3000, 6000,9000LBS...3Applicable Medium: Water, Steam, Petroleum,etc.4)Materials: forged steel A105, 321, 304, 304L, 316, 316L, 15CrMo, 12Cr1MoV5 ...