LONTAIN seamless steel pipes

LONTAIN.Founded on August 4, 2003, and located in Jiangdu District, Yangzhou, LONTAIN is a large-scale enterprise specializing in the production of seamless steel pipes, with an annual production capacity of 700,000 tons. The company offers a comprehensive range of product specifications, with diameters ranging from 19 mm to 1,422 mm and wall thicknesses ranging from 2.5 mm to 150 mm. The highest pipeline steel grade available is X100. LONTAIN’s extensive product portfolio encompasses a variety of materials, including low-temperature (-75°C) and high-temperature carbon steel, microalloyed high-strength steel, corrosion-resistant steel for high-sulfur environments, chromium-molybdenum/chromium-nickel high-temperature alloy steel, and stainless steel. These products are widely used in ultra-supercritical thermal power generation, energy, and mechanical manufacturing sectors. The company consistently adheres to internationally advanced quality control standards and strictly implements the TÜV ISO 9001:2008 quality management system. Its wholly-owned subsidiary, Yangzhou Longchuan Energy Equipment Co., Ltd., has also obtained ISO 14001 environmental management system and OHSAS 18001 occupational health and safety management system certifications. Furthermore, the company’s products have passed international certifications such as API 5CT, API 5L, PED, CPR, AD2000, and IBR, and have received factory approvals from multiple international classification societies including DNV GL, ABS, LR, BV, and CCS, providing reliable material solutions for offshore engineering, pipelines, boilers, petrochemicals, machinery, gas cylinders, oil casing and tubing, and other specialized applications.