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Thép Ống Đúc/Thép Ống Đúc ASTM A106 Gr B /Thép Ống Đúc Tiêu Chuẩn SCH40/SCH80/SCH160 phi 21/27/34/42/49/60/90/101/114/141/168/219/273/323/355/406

Thép Ống Đúc 21/27/34/42/49/60/90/101/114/141/168/219/273/323/355/406 Thép Ống Đúc/Thép Ống Đúc ASTM A106 Gr B /Thép Ống Đúc Tiêu Chuẩn SCH40/SCH80/SCH160 phi 21/27/34/42/49/60/90/101/114/141/168/219/273/323/355/406