... elbowStandard ASTM, JIS, DIN, EN, GB, KS,AISI,ANSI,SUS,ASME etcMaterial 310S,309S,316,316L,317,317L,321,321H,347 ... for gases ,fluids in industrial processes,medical,construction and many pipe fitting specialized applications.Contact If you have any question ,please feel ... prompt attention.2.Contact information:3.Photoes4.Package5.Certificates6.Cooperation pipe fitting Welded stainless steel elbow