OCTG Pipe Manufacturers in China: World-Class Seamless Casing, Tubing & Drill Pipe Production

Published by DY77 Research • Updated May 2026 • Oil Country Tubular Goods

China is the world's largest producer of Oil Country Tubular Goods (OCTG), with massive seamless pipe mills and advanced metallurgical capabilities. Chinese OCTG pipe manufacturers supply high-quality casing, tubing, and drill pipes to oilfields across the globe, offering competitive pricing and reliable API-certified products. Below we profile the leading manufacturers, suppliers, and companies in China's OCTG pipe sector.

Leading OCTG Pipe Manufacturers & Companies in China

Tianjin Pipe Corporation (TPCO)

TPCO is one of the world's largest seamless steel pipe producers, manufacturing a complete range of OCTG casing, tubing, and line pipes. Their products meet API 5CT, 5L, and proprietary sour service grades for global markets.

Baosteel Group

Baosteel's seamless pipe division produces high-end OCTG for deep and ultra-deep wells. They are a key supplier for CNPC, Sinopec, and international operators, offering 13Cr and duplex stainless materials.

Hengyang Valin Steel Tube Co., Ltd.

Specializing in seamless OCTG pipes, Valin Steel offers casing and tubing up to 720mm diameter. Their products are widely used in shale gas, HPHT, and offshore drilling projects worldwide.

Jiangsu Changbao Steel Tube Co., Ltd.

Changbao is a leading OCTG manufacturer focused on high-collapse casing, thermal production tubing, and drill pipes. They export heavily to the Middle East, North America, and Southeast Asia.

Shandong Molong Petroleum Machinery Co., Ltd.

Molong produces a wide array of OCTG pipes including casing, tubing, and couplings. Their products are API certified and cover grades from J55 to Q125, including corrosion-resistant alloys.

OCTG Pipe Suppliers & Export Companies in China

Beyond the integrated mills, numerous specialized OCTG pipe suppliers operate across China. Companies such as Shanghai Baosteel International, China Oilfield Services Limited (COSL), and SINOPEC International facilitate global distribution. Trading firms like Jingye Steel and Zhejiang Jiuli Hi-Tech Metals provide niche alloy OCTG solutions for corrosive environments. With continuous investment in premium connection technology and digital manufacturing, Chinese OCTG pipe manufacturers remain pivotal in supplying cost-effective, high-quality tubular solutions to the global energy industry.