Along with the years of entrepreneurial journey of Zhongyuan people, she gradually formed her own spiritual pillar and behavioral norms. In the silent inheritance, she guided Zhongyuan Company towards a more brilliant tomorrow.
| Chemical Analysis and Mechanical Properties of SSAW Steel Pipe 螺旋埋弧焊管的化学分析和力学性能 | ||||||||
| Standard 标准 | Grade 等级 | Chemical Composition(max)% 化学成分(最大)% | Mechanical Properties(min) 机械性能(最小值) | |||||
| C | Si | Mn | P | S | Tensile Strength(Mpa) 抗拉强度 | Yield Strength(Mpa) 屈服强度 | ||
| ASTM A53 | A | 0.25 | 0.1 | 0.95 | 0.05 | 0.045 | 330 | 330 |
| B | 0.3 | 0.1 | 1.2 | 0.05 | 0.045 | 415 | 415 | |
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