carbon steel elbow fittings 1)Seamless and welded elbow 2)30 degree,45 degree, ... degree 3)L/R,S/R carbon steel elbow fittings Product 1. Elbow1)Seamless and welded2)30 degree,45 degree,90degree ... Painted: black, varnish, antirust oil3)Wall thickness:Sch5-Sch160,xxsMaterial 1. Carbon steel:ASTM/ASME A234 WPB,WPC2. Alloy steel: ... ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91 ...