Petroleum drill stem joint (butt joint) is the use of oil, natural gas drilling in the tube body on the welding head with the drill pipe, including internal and external thread joint.
Drill pipe joints the company producing all kinds of specifications, can provide a variety of drill pipe blank, light green and finished products according to user needs. The joint is made of high quality alloy steel, with a special heat treatment, high strength, good toughness, long service life. Thread surface by copper or phosphating treatment, excellent anti sticking properties, mechanical properties of SY/T 5290 and API Spec7 requirements
The mechanical properties of drill pipe joint | The mechanical properties | Tensile strength | Yield strength | Elongation
% | Impact work
21(J) | Brinell hardness | API Standard | ≥965.3 | ≥827.4 | ≥13 | ≥54 | ≥285 |
Table parameters of drill pipe joint: Drill pipe joint code | Specification and type | Nominal quality | Grade | Internal, external thread joint diameter | The inner diameter of the joint | Internal and external threads, shoulder joint chamfer diameter | Outside screw clamp space joint | Inside screw thread clamp space joint | Internal, external thread joint welding neck diameter | NC26 | 2 3/8 EU | 9.90 | E75 | 85.7 | 44.45 | 82.95 | 177.8 | 203.2 | 65.09 | X95 | 85.7 | 44.45 | 82.95 | 177.8 | 203.2 | 65.09 | G105 | 85.7 | 44.45 | 82.95 | 177.8 | 203.2 | 65.09 | NC31 | 2 7/8 EU | 15.49 | E75 | 104.8 | 53.98 | 100.41 | 177.8 | 228.6 | 80.96 | X95 | 104.8 | 50.80 | 100.41 | 177.8 | 228.6 | 80.96 | G105 | 104.8 | 50.80 | 100.41 | 177.8 | 228.6 | 80.96 | S135 | 111.1 | 41.28 | 100.41 | 177.8 | 228.6 | 80.96 | NC38 | 3 1/2 EU | 14.15 | E75 | 120.7 | 76.20 | 116.28 | 203.2 | 266.7 | 98.43 | NC38 | 3 1/2 EU | 19.81
23.09 | E75 | 120.7 | 68.26 | 116.28 | 203.2 | 266.7 | 98.43 | X95 | 127.0 | 65.09 | 116.28 | 203.2 | 266.7 | 98.43 | G105 | 127.0 | 61.91 | 116.28 | 203.2 | 266.7 | 98.43 | S135 | 127.0 | 53.98 | 116.28 | 203.2 | 266.7 | 98.43 | E75 | 127.0 | 65.09 | 116.28 | 203.2 | 266.7 | 98.43 | X95 | 127.0 | 61.91 | 116.28 | 203.2 | 266.7 | 98.43 | G105 | 127.0 | 53.98 | 116.28 | 203.2 | 266.7 | 98.43 | NC40 | 3 1/2 EU 4IU | 23.09
20.85 | S135 | 139.7 | 57.15 | 127.40 | 177.8 | 254.0 | 98.43 | E75 | 133.4 | 71.44 | 127.40 | 177.8 | 254.0 | 106.36 | X95 | 133.4 | 68.26 | 127.40 | 177.8 | 254.0 | 106.36 | G105 | 139.7 | 61.91 | 127.40 | 177.8 | 254.0 | 106.36 | S135 | 139.7 | 50.80 | 127.40 | 177.8 | 254.0 | 106.36 | NC46 | 4EU | 20.85 | E75 | 152.4 | 82.55 | 145.26 | 177.8 | 254.0 | 114.30 | X95 | 154.4 | 82.55 | 145.26 | 177.8 | 254.0 | 114.30 | G105 | 152.4 | 82.55 | 145.26 | 177.8 | 254.0 | 114.30 | S135 | 152.4 | 76.20 | 145.26 | 177.8 | 254.0 | 114.30 | | 4 1/2 IU 4 1/2IEU | 20.48
24.73 | E75 | 152.4 | 85.73 | 145.26 | 177.8 | 254.0 | 119.06 | E75 | 158.8 | 85.22 | 145.26 | 177.8 | 254.0 | 119.06 | X95 | 158.8 | 76.20 | 145.26 | 177.8 | 254.0 | 119.06 | G105 | 158.8 | 76.20 | 145.26 | 177.8 | 254.0 | 119.06 | S135 | 158.8 | 69.85 | 145.26 | 177.8 | 254.0 | 119.06 |
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According to customer requirements, production to meet customer requirements of non-standard drill pipe and tool joint.
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Sally Zhang
Tel:0086 181 3659 6692
Fax:0086 0519 85268163
Skype:sally77778
