Oil Steel Tube

Oil steel tube is mainly used in petroleum industries. JST steel pipe for oil and gas includes drill pipe, tubing, casing, coupling stock, line pipe, and so on. Tubing is a pipe that transports crude and natural gas from the hydrocarbon zone to the pipe on the earth surface after drilling. It is mainly used in oil wells for extracting petroleum and natural gas. Casing is a type of steel tube used for supporting the wall of oil and gas well. This steel pipe is typically used to enclose and surround a carrier pipe installed in the center of this pipe. Coupling stock is mainly applicable in the manufacture of pipe couplings. Drill pipe is a kind of steel tube with screw thread in the pipe end. It is used for connecting ground rig equipment and drill grinding equipment at the bottom of drilling wells. Line pipe is a type of steel pipe that is manufactured from high strength carbon steel. This steel tube can be used to build pipelines that transport a variety of resources including natural gas, oil, petroleum and water in the petroleum and natural gas industry.

• API 5CT: casing and tubing
• BS EN ISO 11960: steel pipes used as casing or tubing for wells in petroleum and natural gas industries
• NF M87-207: steel tubes used as casing or tubing for wells in petroleum and natural gas industries
• JIS G3439: seamless steel oil well casing, tubing and drill pipe
• We mainly produce grades of steel pipes for oil and gas, such as H40, J55, K55, N80, C75, L80, C90, T95, Q125, etc.
• There are two standards for line pipes, including API SPEC 5L and GB/T9711. JST mainly manufactures grades of steel tubes as follows:
• 1) PSL1: A/L210, B/L245, X42/L290, X46/L320, X52/L360, X56/L390, X60/L415, X65/L450, X70/L485
  2) PSL2: L245N/Q, L290R/N/Q, L320N/Q, L360N/Q, L390N/Q, L415N/Q, L450N/Q, L485N/Q

• JST possesses two heat treatment production lines for steel tubes, configured with advanced heating equipment. Difference in temperature in the furnace is less than or equal to 5℃, ensuring stable heating temperature. Equipped with inside spray and outside showering rotating cooling system, this line can make sure that water quenching of the API tubing cools uniformly. Two Siemens electronic-controlled six roll straightening machines ensure the straightness of seamless steel pipes after heat treatment. There are mainly two production specifications of steel tubes. The one is with the outer diameter of φ114 mm to 406 mm and the length less than or equal to 13.5 m, and the other one with the outer diameter of φ48 mm to 180 mm and the length less than or equal to 12.5 m. The annual productions of steel pipes for oil and gas are 150,000 tons and 50,000 tons respectively.
• We own professional tubing and casing thread production line. The line is equipped with petroleum hydrostatic testing. We can process 35, 000 tons of oil steel tubes (φ 60.3 mm to 180 mm) and 180, 000 tons of casings annually.
• In order to ensure good quality of our steel pipes, our company adopts advanced production and testing equipment from domestic and abroad. We own two domestic ultrasonic inspection machines, two sets of hydrostatic press, imported joint inspection machines, portable optical spectrum analyzer, desktop spectrometer, magnetic particle inspection machine, complete mechanical property testing equipment, complete metallographic structure analysis equipment, a full set of API standard gauge and non-standard gauge for seamless steel tubes.
• JST also attaches great importance to personnel selection and training. Every one operating the inspection equipment must pass JST exam and get the work license to engage in the production of steel pipes. To enhance the overall quality of staff, JST has relevant trainings each month. Every year, we also invite professionals to train our employees.

Jiangyin Changjiang Steel Tube Making Factory is a leading supplier and exporter of seamless steel pipes in China. Our company is a large scale enterprise possessing the production capacity of 600,000 tons of special seamless steel pipes. We mainly manufacture structure pipe, fluid pipe, high pressure boiler pipe, API pipe, marine pipe, alloy pipe, tubing, casing, line pipe, etc. With advanced technological equipment, tremendous technical strength and reliable product quality, our steel tubes or steel pipes for oil and gas have been exported to the Middle East, CIS, Southeast Asia, Africa, South America, North America, Europe, Australia and other countries and regions.

Back     Back to Top