Recently, we have successfully produced 12Cr1MoVG  ∮325x50 high-pressure boiler tube for one of large domestic boiler works. Heavy OD and WT alloy pipe is very hard to produce. High demand for equipment and low yield rate is always obsessed by many pipe manufacturers. This customer has a long-term partner. To solve this problem, we have founded a development team. From billet control , piercing , rolling to heat treatment, we have done a lot of tests and complete a full set of producing procedure and test specification. Finally, pipes can fulfill the standard and customer agreement requirement.
       The successful production of this pipe means we have made a great progress for heavy OD and WT alloy boiler tubes , and made a great contribution to localization of above-critical and supercritical boiler tubes.

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