Threeway steel long-term production and supply of API 5L steel pipe, thermal expansion of steel pipe, there are advanced production equipment, professional production technology of steel pipe production of good quality and reasonable price, welcome new and old customers to order!
Large diameter seamless steel pipe (406~1500mm * 6.4~270.0mm) is mainly used as a general fluid conveying pipe, oil and gas pipeline, pipe structure, pipe pressure vessels, pipes and military pipe high-pressure boiler steel pipe material, mainly for the high quality carbon steel, alloy steel, stainless steel and special alloy.In China small and medium caliber API 5L steel pipe production equipment, rapid development, and large caliber seamless steel pipe production development is comparatively backward. According to incomplete statistics, China's current production of seamless steel tube factory more than 150 stores, all kinds of seamless steel pipe units of about 289 units (including construction of 17 sets, which can be the main equipment) production of large caliber seamless steel pipe (including in) built a total of about 11 sets of units, such as steel with 400mm automatic tube rolling mills, however, have not been able to make up the market for large caliber seamless steel pipe increasing need. Currently insufficient production capacity and large caliber students Because of the limitation of the large outer diameter specification of hot rolled seamless steel pipe, people try to realize the production of larger diameter seamless steel pipe by means of thermal expanding process.
Relatively high production cost and expensive production equipment for hot-rolled seamless steel tube, thermal expansion process has simple production process, stable quality, economical and practical, with low cost and high production efficiency. As the extension of the main smelting, rolling pipe thermal expansion seamless steel tube to fill the shortage of domestic large diameter seamless steel pipe specifications, special solution the needs of the user.
