OREANDA-NEWS. October 19, 2011. Recently, by fully evoking advantage in technology and equipment, Baosteel successfully finishes the production task BG2250-125 BGC nickel-based alloy tubing and casing which is of largest specification and highest grade in China. Its outside diameter is 193.68 mm and wall thickness is 12.7 mm (?193.68 ? 12.7 mm). Up to now, Baosteel has achieved full coverage of nickel-based alloy oil tubing and casing in grades and specifications, reported the press-centre of Baosteel.

In recent years, domestic oil field has intensified the exploration and development of high acid corrosion gas resources. As premium products in steel pipes, nickel-based alloy tubing and casing is included in the national energy sector strategic materials. With ensuring domestic energy development material supply as its mission, Baosteel has long-term commitment in high-end OCTG products development. Since 2006, Baosteel has set up production, sales and research team, conducted special research in nickel-based alloy tubing and casing products development. Due to their efforts, a series of nickel-based alloy products including BG2532, BG2250 and BG2830 are developed and Baosteel has become the first domestic enterprise which has the capacity of nickel-based alloy oil tubing and casing products supply.

This year, Sinopec Southwest Bureau makes ?177.8 ? 12.65 mm BG2830-110 and ?193.68 ? 12.7 mm (matching collar specification ?216 ? 26 mm) BG2250-125 series of nickel-based alloy tubing and casing order contract with Baosteel. Among them, ?193.68 ? 12.7 mm BG2250-125 BGC product has not only high alloy content and large specification, but also very high demand on strength and sealing performance and it is difficult to produce. To meet customer's needs, Baosteel Co.,Ltd. Science and Technology Development Branch, Manufacturing Management Branch, Special Steel Business Unit, Pipeline Steel Business Unit and Baosteel Research Institute cooperate with each other, give full play to the team's advantage in R & D capability, advanced manufacturing equipment and integrated manufacturing technology and conduct research in product deformation, cold processing, air sealing special buckle design and processing technology. Team members overcome many difficulties and finally succeed in producing the nickel-based alloy tubing and casing which is of largest specification and highest grade in China. After testing, the products' performance meet the technical standards and customers' requirements.