steel pipe fittings Size:1/2"-48" Material:A234-WPB,A420- ... ,A234-WP11,A234-WP5 1.Type:seamless butt weld carbon steel elbow 2.Size:1/2"-48"DN15-DN1200 3.Wall ... .Applications range:Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc steel pipe fittings