列表:pipeline
API 5L X80 PSL2 line pipe (04-18)
A106 Gr.C pipeline (01-29)
A106 Gr.B pipeline (01-29)
A106 Gr. A pipeline (01-29)
A53 Gr. B pipeline (01-29)
A53 Gr. A pipeline (01-29)
GB/T9711 L485 pipeline (01-29)
GB/T9711 L415 pipeline (01-29)
GB/T9711 L390 pipeline (01-29)
GB/T9711 L360 pipeline (01-29)
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