Daim ntawv teev nqi khoom (nqi chav tsev: RMB) Tus qauv Asmeskas: API 5L, ASTM A106 / A53 German tus qauv: DIN 1629 Khoom siv: 20#, Gr.B, ST44 NDOD (MM) SCH40 SCH80 WT Nqe Nqe WT Nqe (MM) ( KG/M) (Yuan/ton) (MM) (KG/M) (Yuan/ton) 1/4″ 13.7 2.24 0.63 8100 3....
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