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ASTM A 106 Black Carbon Seamless Steel Tubes bakeng sa mefuta e fapaneng ea lits'ebetso tsa ts'ebeletso ea mocheso o phahameng
Ha re le Botop, re motlotlo ho ba lekala la machaba la Hebei allland Steel Tube Group, 'me re boetse re boloka mefuta e mengata ea liphaephe tsa tšepe tse se nang moroko ho khotsofatsa litlhoko tsa bareki....Bala haholoanyane