高强度管 meaning in Chinese

high strength tube

Sturdiness . 14 - g diamond plate steel body , high strength tubular frame
坚固性： 14g菱形钢车身，高强度管状结构。
Effect of girth weld strength match on limit load and fracture resistance of high strength , large diameter pipelines steel is analyzed with fad ( failure analysis diagram ) method
摘要采用失效评定图技术分析了油气长输管道中高强度管?钢大口径管道环焊缝不同强度匹配形式对管道极度限承载能力以及抗断性能的影响。