What is the cold drawing process of high pressure boiler tubes
High pressure boiler tubes are mainly used to manufacture superheater tubes, reheater tubes, air guide tubes, main steam tubes, etc. of high-pressure and ultra-high-pressure boilers.
The cold drawing process of the high pressure boiler tubes: firstly, the round tube blank is heated to the temperature where it can be pierced, and then it is processed by punching, annealing, pickling and copper plating. The next step can be cooled, which requires several cooling. The blank tube formed after cooling shall be heat treated and straightened. After the water pressure test, the blank pipe can be marked and put into storage.
The main materials of high pressure boiler tubes are: 20G, 20MnG, 25MnG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG, 12Cr2MoWVTiB, 10Cr9Mo1VNbN, SA210A1, SA210C, A213 T11, A213 T12, A213 T22, A213 T23, SA213 T91, SA213 T92, ST45.8, 15Mo3, 13CrMo44, 10CrMo910, etc.
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EN 10210 S355J2H hollow section
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GB/T 18248 35CrMo seamless pipe
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GB/T 18248 34CrMo4 seamless pipe
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GB/T 18248 30CrMo seamless pipe
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GB/T 8163 Q345E seamless alloy s
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GB/T 8163 Q345D seamless alloy s
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GB/T 8163 Q345C seamless alloy s
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GB/T 8163 Q345B seamless steel p
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GB/T 8163 20# seamless steel pip
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EN 10297 42CrMo4 seamless pipe a
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