钢管道 meaning in Chinese

steel conduit

Hot rolled steel channels - tolerances on shape , dimensions and mass
热轧钢管道.形状尺寸和质量公差
Cement mortar lining for buried steel water pipeline technical standard
埋地给水钢管道水泥砂浆衬里技术标准
Code for structural design of buried steel oil and gas transmission pipeline
埋地输油输气钢管道结构设计规范
Technical standard for cement mortar lining of buried steel water supply pipeline
埋地给水钢管道水泥砂浆衬里技术标准
Specification for class ii arc welding of carbon steel pipework for carrying fluids
输送流体用碳钢管道二级电弧焊规范

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