Kayayyaki
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API 5CT Carbon Karfe Hakowa Bututu don ayyukan hakowa
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ASTM A333, ASTM A335, ASTM A387, ASTM A213/213M Alloy Karfe bututu
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ASTM A192, ASTM A179, ASTM A209, ASTM A210 Karfe Boiler tubes
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Juriyar Lantarki Welded ERW Karfe Bututu ERW Karfe Bututu
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SANS 657-3, EN 10305, DIN 2391 Babban Madaidaicin Bututun Karfe
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Galvanized Scafolding Bututu da Na'urorin haɗi
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Square & Rectangular tubes
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Karfe Mai Karfe Babba Diamita SSAW Bututun Karfe
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Bututun ƙarfe na LSAW mai inganci mai tsayi mai tsayi