Prefabricated eco-house, fast assembly
Steel pipes, Laser machinery, UAV
Water/gas treatment, Cooling water

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| Standard | Steel Grade | Chemical Components | Mechanical Property | ||||||||
| C | Mn | Cr | Mo | P | S | Ni | Cu | Tensile Strength (Mpa) | Yield Strength(Mpa) | ||
| API Spec 5L PLS1 | B | ≤0.28 | ≤1.20 | ≤0.50 | ≤0.15 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.50 | ≥415 | ≥245 |
| X42 | ≤0.28 | ≤1.30 | ≤0.50 | ≤0.15 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.50 | ≥415 | ≥290 | |
| X46 | ≤0.28 | ≤1.40 | ≤0.50 | ≤0.15 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.50 | ≥435 | ≥320 | |
| X52 | ≤0.28 | ≤1.40 | ≤0.50 | ≤0.15 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.50 | ≥460 | ≥360 | |
| X56 | ≤0.28 | ≤1.40 | ≤0.50 | ≤0.15 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.50 | ≥490 | ≥390 | |
| X60 | ≤0.28 | ≤1.40 | ≤0.50 | ≤0.15 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.50 | ≥520 | ≥415 | |
| X65 | ≤0.28 | ≤1.40 | ≤0.50 | ≤0.15 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.50 | ≥535 | ≥450 | |
| X70 | ≤0.28 | ≤1.40 | ≤0.50 | ≤0.15 | ≤0.030 | ≤0.030 | ≤0.50 | ≤0.50 | ≥570 | ≥485 | |
| Standard | Steel Grade | Chemical Components | Mechanical Property | ||||||||
| C | Mn | Cr | Mo | P | S | Ni | Cu | Tensile Strength (Mpa) | Yield Strength(Mpa) | ||
| API Spec 5L PLS2 | BN | ≤0.24 | ≤1.20 | ≤0.30 | ≤0.15 | 0.025 | 0.015 | ≤0.30 | ≤0.50 | 415-655 | 245-450 |
| X42N | ≤0.24 | ≤1.20 | ≤0.30 | ≤0.15 | 0.025 | 0.015 | ≤0.30 | ≤0.50 | 415-655 | 290-495 | |
| X46N | ≤0.24 | ≤1.40 | ≤0.30 | ≤0.15 | 0.025 | 0.015 | ≤0.30 | ≤0.50 | 435-655 | 320-525 | |
| X52N | ≤0.24 | ≤1.40 | ≤0.30 | ≤0.15 | 0.025 | 0.015 | ≤0.30 | ≤0.50 | 460-760 | 360-530 | |
| X56N | ≤0.24 | ≤1.40 | ≤0.30 | ≤0.15 | 0.025 | 0.015 | ≤0.30 | ≤0.50 | 490-760 | 390-545 | |
| X60N | ≤0.24 | ≤1.40 | ≤0.50 | ≤0.50 | 0.025 | 0.015 | ≤0.50 | ≤0.50 | 520-760 | 415-565 | |
| X65Q | ≤0.18 | ≤1.70 | ≤0.50 | ≤0.50 | 0.025 | 0.015 | ≤0.50 | ≤0.50 | 535-760 | 450-600 | |
| X70Q | ≤0.18 | ≤1.80 | ≤0.50 | ≤0.50 | 0.025 | 0.015 | ≤0.50 | ≤0.50 | 570-760 | 485-635 | |
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