1) Elbow steel 20 2)Material:Carbon steel 3)Size:1/2-144aa ... ,180 degree elbow 5)WT:sch10-xx Elbow steel 20 WeldedSeamlessNominal SizeDN250-DN1800DN15-DN700Wall ThicknessSTD,XS,XXS,SCH10,SCH20, ... ,PA25,PL380GB10#,20#,20G,23g,20R,Q235,16Mn, 16MnR,1Cr5Mo, 12CrMo, 12CrMoG, 12Cr1MoSurface treatmentTransparent oil, rust-proof black oil or hot ... website , your inquiries will be reply promptly! Elbow steel 20