Successful Load Test of VALIN Xigang Ф258mm Seamless Tube Mill (HM) Built by CISDI on EPC
2011-02-15 11:04:03
Xigang 258mm Seamless Tube Mill
CTP Plug Circulation Unit
Extracting Mill
Sizing Mill
Pioneer Application of CISDI IPR-owned Double-layer Plug Circulation Device Worldwide
January 29, 2011 witnessed the successful load test of VALIN Xigang Ф258mm Seamless Tube Mill (HM), built by CISDI on EPC mode. The hot rolling line experienced the load test includes billet stock preparation, cutting, rotary hearth furnace heating, piercer mill, PQF, extracting mill, sizing mill and cooling bed.
The Ф258mm Seamless Tube Mill is a key project to push VALIN Xigang forward in its relocation to realize product restructuring, technological and equipment updating and production optimization. The project is designed to complete one of the world’s top level PQF seamless tube rolling line, two heat treatment lines, four OCTG lines and special-purpose pipe line (line pipe, HP boiler pipe and oil cracking pipe), and two NDT lines. In particular, the project will produce high-end oil casing pipe typical with P110 and Q125 grade of steel special threads, and HP boiler pipe typical with T91, P91 and stainless tube.
The highly-efficient and reliable equipment and process are put into use, cone-type piercer (CTP) + 6-stand 3-roll retaining mandrel PQF mill + 3-stand extracting mill + 14-stand sizing mill, one of the world’s most advanced. Various detection and non-destructive testers are also used in the seamless tube mill workshop to guarantee the tube quality. High-level automation control system is another powerful means for the tube rolling line.
More than 90% of the mechanical equipment for the project is contracted to CISDI for design and supply. CISDI self-developed CTP plug circulation device, extracting mill, sizing mill, whole-line automation software programming and integration have made smooth beginning and operation. Above all, the double-layer plug circulation device for large-caliber of tube has been successfully launched therein, IPR-owned by CISDI, characteristic of shortening piercing free time and expanding plug service life and bettering productivity.
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Annual Output
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500,000t Φ114~273mm seamless tubes
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Main Product
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Oil casing stock, casing coupling stock, oil pipe coupling stock, oil drill-rod pipe, line pipe, and seamless tube for HP & MV & LV boiler, gas cylinder, hydraulic prop, structure and fluid transport as well as other high-alloy pipe
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