Audited Supplier
Tianjin Dongfanglong Machine Manufacture Co., Ltd. was founded in 1999, mainly engaged in oil pipes and pipe fittings, oil special drilling and production tools and oil automation equipments. The company is named as national integration and standard implementation enterprise, a national science and technology-based small and medium-sized enterprise. With honors of"Henan enterprise technology center", "Henan postdoctoral innovation practice base", the company hold 35 senior engineers, engineers and technicians, and has successively obtained ISO9001 Quality system certificates, API 5CT certificate authorized by American Petroleum Institute and BV Quality supplier evaluation certificate issued by company of France. Owing more than 30 independent intellectual property rights, forming an industrial chain integrating design, development, manufacturing, testing and experiment of numerical control automation equipment for petroleum machinery products, which can meet customers' demand for products Full cycle service.
In the future, Dongfanglong will closely focus on national policy orientation and innovation driven development strategy, formulate sustainable development transformation strategy, keep forging ahead, take creating world famous brand and winning honor for the nation as the goal, work together with people of insight from all walks of life for win-win cooperation, and build up the dream of oil equipment manufacturing.
| Tubing Pipe Outside Diameter(In) | Tubing Pipe Outside Diameter(mm) | Coupling Outside Diameter(mm) | Minimum Length(mm) | Diameter Of Recess(mm) | Width of Bearing Face Regular (mm) | Max Bearing Face Diameter (mm) | Mass(Kg) | |||||||||
| NUE | EUE | NUE | EUE | NUE | EUE | NUE | EUE | NUE | EUE | NUE | EUE | |||||
| Regular | Special Clearance | Regular with special bevel | Special Clearance | Regular | Special Clearance | |||||||||||
| 1.9 | 48.26 | 55.88 | 63.50 | -- | 95.25 | 98.42 | 49.86 | 54.76 | 1.59 | 3.18 | 52.07 | 58.34 | -- | 0.56 | 0.84 | -- |
| 2 3/8 | 60.32 | 73.02 | 77.80 | 73.91 | 107.95 | 123.82 | 61.93 | 67.46 | 4.76 | 3.97 | 66.68 | 71.83 | 69.90 | 1.28 | 1.55 | 1.07 |
| 2 7/8 | 73.02 | 88.90 | 93.17 | 87.88 | 130.18 | 133.35 | 74.63 | 80.16 | 4.76 | 5.56 | 80.98 | 85.88 | 83.24 | 2.34 | 2.40 | 1.55 |
| 3 1/2 | 88.90 | 107.95 | 114.30 | 106.17 | 142.88 | 146.05 | 90.50 | 96.85 | 4.76 | 6.35 | 98.42 | 104.78 | 100.71 | 3.71 | 4.10 | 2.38 |
| 4 | 101.60 | 120.65 | 127.00 | -- | 146.05 | 152.40 | 103.20 | 109.55 | 4.76 | 6.35 | 111.12 | 117.48 | -- | 4.35 | 4.82 | -- |
| 4 1/2 | 114.30 | 132.08 | 141.30 | -- | 155.58 | 158.75 | 115.90 | 122.25 | 4.76 | 6.35 | 123.19 | 130.96 | -- | 4.89 | 6.05 | -- |
| Casing Pipe Outside Diameter(In) | Casing Pipe Outside Diameter(mm) | Coupling Outside Diameter(mm) | Minimum Length(mm) | Diameter Of Recess(mm) | Width of Bearing Face Regular (mm) | Mass(Kg) | |||||||||
| Round (LTC /STC) | BTC | Round | BTC | Round (LTC/ STC) | BTC | Round (LTC/ STC) | BTC | Round | BTC | ||||||
| Regular | Special Clearance | STC | LTC | STC | LTC | Regular | Special Clearance | ||||||||
| 4 1/2 | 114.30 | 133.35 | 133.35 | 123.82 | 158.75 | 177.80 | 225.42 | 116.68 | 117.86 | 7.14 | 6.35 | 5.24 | 5.96 | 6.89 | 3.48 |
| 5 | 127.00 | 147.32 | 147.32 | 136.52 | 165.10 | 196.85 | 231.78 | 129.38 | 130.56 | 7.14 | 7.14 | 6.43 | 7.86 | 8.38 | 4.00 |
| 5 1/2 | 139.70 | 160.02 | 160.02 | 149.22 | 171.45 | 203.20 | 234.95 | 142.08 | 143.26 | 6.35 | 7.14 | 7.34 | 8.92 | 9.30 | 4.47 |
| 6 5/8 | 168.28 | 187.71 | 187.71 | 177.80 | 184.15 | 222.25 | 244.48 | 170.66 | 171.83 | 6.35 | 6.35 | 9.12 | 11.34 | 11.01 | 5.65 |
| 7 | 177.80 | 200.03 | 200.03 | 187.32 | 184.15 | 228.60 | 254.00 | 180.18 | 181.36 | 7.94 | 7.94 | 10.88 | 13.92 | 13.98 | 6.28 |
| 7 5/8 | 193.68 | 215.90 | 215.90 | 206.38 | 190.50 | 234.95 | 263.52 | 197.64 | 197.23 | 5.56 | 7.94 | 12.16 | 15.63 | 15.82 | 9.29 |
| 8 5/8 | 219.08 | 244.48 | 244.48 | 231.78 | 196.85 | 254.00 | 269.88 | 223.04 | 222.63 | 6.35 | 9.52 | 15.62 | 21.67 | 20.86 | 10.80 |
| 9 5/8 | 244.48 | 269.88 | 269.88 | 257.18 | 196.85 | 266.70 | 269.88 | 248.44 | 248.03 | 6.35 | 9.52 | 17.85 | 25.45 | 23.16 | 12.02 |
| 10 3/4 | 273.05 | 298.45 | 298.45 | 285.75 | 203.20 | -- | 269.88 | 277.02 | 276.61 | 6.35 | 9.52 | 20.58 | -- | 25.74 | 13.39 |
| 11 3/4 | 298.45 | 323.85 | 323.85 | -- | 203.20 | -- | 269.88 | 302.42 | 302.01 | 6.35 | 9.52 | 22.43 | -- | 28.03 | -- |
| 13 3/8 | 339.72 | 365.12 | 365.12 | -- | 203.20 | -- | 269.88 | 343.69 | 343.28 | 5.56 | 9.52 | 25.42 | -- | 31.77 | -- |
| 16 | 406.40 | 431.80 | 431.80 | -- | 228.60 | -- | 269.88 | 411.96 | 410.31 | 5.56 | 9.52 | 34.33 | -- | 40.28 | -- |
| 18 5/8 | 473.08 | 508.00 | 508.00 | -- | 228.60 | -- | 269.88 | 478.63 | 476.99 | 5.56 | 9.52 | 53.33 | -- | 62.68 | -- |
| 20 | 508.00 | 533.40 | 533.40 | -- | 228.60 | 292.10 | 269.88 | 513.56 | 511.91 | 5.56 | 9.52 | 42.81 | 56.98 | 50.10 | -- |
