Drill pipe tool joint manufacturer

The drill stem consists of the drill string and all other attached members, including kelly, subs, drill collars, heavy weight, drill pipe, stabilizers, shock absorbers, reamers, and any other in-hole equipment used generally or part-time during drilling operations. In the world wide oil industry today, an overwhelming majority of all tubular goods are manufactured to specifications developed and approved by the American Petroleum Institute.

These specifications cover the mechanical properties of the steel, the details of manufacture and physical dimensions of the pipe. The latter include internal and external diameters, wall thickness and upset dimensions for each nominal size, weight and grade, as well as tool joint type, O. API Specification 5 and 7 cover pipe and the drill string. High Strength Drill Pipe — Because of deeper drilling and higher stress levels, grades of drill pipe stronger than Grade E have been developed.

Grades and minimum tensile yield strengths are:. High-strength drill pipe requires heavier and longer upsets than those used on Grade E Supplier Contact Details Video. Top 3 Markets: Domestic Market Show : 20 38 Go to Page. Haven't found the right supplier yet? Trade Alert Trade Alerts are FREE updates on topics such as trending hot products, buying requests and supplier information - sent directly to your email inbox!

Confirm Cancel. Pipe ends apply the large-ton hydraulic upsetting, with big strike power and shaping speed, the size and structure of the pipe end are reasonable. Cause of upsetting twice or triple continually, to avoid the risk of reheating coarse grains after cooling for many times.

Speedy upsetting-the greatest advantage of using the large-tonnage hydraulic upsetter is high speed, which can refine the grain well, ensuring the pipe ends with good mechanical performance after heat treatment and forging, and together with the upset part ,are both consistent with performance of mother pipe. This is better workmanship for drill pipe manufacturing and drilling operation, offering good solution to drill pipe manufacturing especially the mechanical performance of weld line.

Using the domestic advanced regenerative combustion walking beam furnace ,to ensure the heating temperature uniformity; side open door ensure the temperature drop consistency when the tube is released, having the tube get the same cooling velocity easily when quenching, thus with density structure and uniform mechanical performance and high impact toughness. After quenching, full length descaled, making the tube surface bright and clean, which will improve the precision of non-destructive inspection and guarantee the product quality effectively.