... 5 - 12m according to custome High Pressure Boiler Seamless Steel Pipes Features: 1) Commodity: seamless and welded austenitic stainless steel ... pipes 2) Process method: cold drawn / cold pilgered 3) Surface ... drawn, hot rolled, hot expansion, cold rolledTypeRound pipe and square pipeMaterial20#, 45#,Q235,20G,A106B,A53B,AISI 1010, AISI 1020 ...