... Formed a worldwide market 1.Name:seamless 1.APIpipe for oil casing2.Material:20#(ASTM A 106/A53 GRB.API5LGRB,GB ... or square cut,plastic capped,painted.7.Application:seamless steel pipe for low and medium pressure boiler,high pressure boiler and ... ship-building,liquid service,petroleum cracking,chemical fertilizer equipment,drawing-oil-equipment and structure purpose!8.Packing:bundles wrapped with strong ...