1.5d 90 degree welding elbow 1.MOQ:1 PC 2.material ... straight, reducing tees, caps, concentric and eccentric reducersRadius Of Curvature1D-10D ANSI,ASME,API5L,DIN,JIS,BS,GBSurface treatmentblack ... , varnish, rust-proof oil, and hot-dipped galvanizedRange Of ApplicationChemical industry, petroleum industry, construction industry, domestic installation ... as requirement 1.5d 90 degree welding elbow