Puyang Zhongshi Group Co., Ltd.
Puyang Zhongshi Group Co., Ltd.
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1. Sales volume around 120,000 tons per year.
2. Stable and reliable in quality.
3. Manufacture and testing according to API 5CT latest version.
4. Been sold to US, Syria, Oman.
5. STC.BTC.LTC , TOP thread are all available.
6. Defect detective 100% before delivery.
| Type | Size(O.D. ) | Nominal Weight | W.T. | I.D. | Coupling | |||
| in | mm | Lbf/ft | Kg/m | mm | mm | O.D.mm | Min length mm | |
| NUE J55 L80 N80 P110 | 1.90 | 48.26 | 2.75 | 4.09 | 3.68 | 40.90 | 55.88 | 95.25 |
| 2 3/8 | 60.32 | 4.60 | 6.85 | 4.83 | 50.66 | 73.02 | 107.95 | |
| 2 7/8 | 73.02 | 6.40 | 9.52 | 5.51 | 62.00 | 88.90 | 130.18 | |
| 3 ½ | 88.90 | 9.20 | 13.69 | 6.45 | 76.00 | 107.95 | 142.88 | |
| 4 1/2 | 114.30 | 12.60 | 18.75 | 6.88 | 100.54 | 132.08 | 155.58 | |
| EUE J55 L80 N80 P110
| 1.90 | 48.26 | 2.90 | 4.32 | 3.68 | 40.90 | 63.50 | 98.42 |
| 2 3/8 | 60.32 | 4.70 | 6.99 | 4.83 | 50.66 | 77.80 | 123.82 | |
| 2 7/8 | 73.02 | 6.50 | 9.67 | 5.51 | 62.00 | 93.17 | 133.35 | |
| 3 ½ | 88.90 | 9.30 | 13.84 | 6.45 | 76.00 | 114.30 | 146.05 | |
| 4 1/2 | 114.30 | 12.75 | 18.97 | 6.88 | 100.54 | 141.30 | 158.75 | |
Dimension Tolerances:
| Steel grade | Type | Total elongation under load (%) |
Yield strength (Mpa) |
Tensile strength (Mpa) min | Hardness max | ||
| min | max | HRC | HBW | ||||
| H40 | - | 0.5 | 276 | 552 | 414 | - | - |
| J55 | - | 0.5 | 379 | 552 | 517 | - | - |
| K55 | - | 0.5 | 379 | 552 | 655 | - | - |
| N80 | 1 | 0.5 | 552 | 758 | 689 | - | - |
| N80 | Q | 0.5 | 552 | 758 | 689 | - | - |
| M65 | - | 0.5 | 448 | 586 | 586 | 22 | 235 |
| L80 | 1 | 0.5 | 552 | 655 | 655 | 23 | 241 |
| L80 | 9 Cr | 0.5 | 552 | 655 | 655 | 23 | 241 |
| L80 | 13 Cr | 0.5 | 552 | 655 | 655 | 23 | 241 |
| C90 | 1 | 0.5 | 621 | 724 | 689 | 25.4 | 255 |
| P110 | - | 0.6 | 758 | 965 | 862 | - | -
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