boiler steel pipe 1.OD:20-325mm 2.WT:4-70mm 3.Length: 5.8-11.8m 4.Technique: hot rolled, coled drawn, ERW Weldless steel pipes for boiler.High quality for both high pressure and low pressure boiller.Harder than welded pipes. Your best choice for high quality products.Material:10#,20#,12CrMoV,15CrMo,10CrMo910,A335P11,Cr5Mo,T91,P91,12Cr2MoWVTiB,WB36,A335P5.WE ARE THE PROFESSIONAL MANUFACTURER OF ...