Boiler pipe is one kind of seamless pipe, and their production style is same. However boiler pipe has strict requirement for steel grade used. According to the usage temperature differences, boiler pipe can be divided into general boiler tube and high pressure boiler pipe. Different country have their own standard for boiler pipes, and they are widely used for heating surface of high temperature boiler, heater, economizer, super heater, re-heater, and petrochemical industry and so on. Production Size Range: OD 21.3mm to 508mm x WT 3mm to 50mm Main standards consist of DIN17175, EN10216, ASME SA-106M, SA-192M, SA-209M, SA-210M, SA-213M, SA-335M, GB3087, GB5310, JIS G3456, JIS G3461, JIS G3462.