We are offering seamless high pressure bolier pipestandard:gb5310, astm, din, bsmaterial:20g, 15mog, 12cr1movggrade:20g, 20mng, 25mng, 15mog, 20mng, 12crmovg, 15crmog, t5, t9, t12, t22, t91, t92o.d:6-720mm, w.t:1-60mmhigh pressure boiler tube is used for condition of high pressue, it need the pipe have large strength. Commonly the material is alloy steel. The pipe was belongs to seamless steel pipe and used in boiler industry.