Lethathamo la theko ea lihlahisoa (theko ea theko: RMB) Tekanyetso ea Amerika: API 5L, ASTM A106/A53 Tekanyetso ea Sejeremane: DIN 1629 Material: 20#, Gr.B, ST44 NDOD (MM) SCH40 SCH80 WT Weight Price WT Weight Price (MM) ( KG/M) (Yuan/ton) (MM) (KG/M) (Yuan/ton) 1/4″ 13.7 2.24 0.63 8100 3....
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