Kayayyaki
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Bututun ƙarfe mara sumul API 5L don iskar gas
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Bututun Karfe na Carbon mara sumul API 5L ASTM A106 A333 ko A335
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API 5CT, J55, K55, L80, N80 Karfe Casing & Bututu
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Bututun Hakowa na Karfe na API 5CT don ayyukan haƙa
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ASTM A333, ASTM A335, ASTM A387, ASTM A213/213M Bututun Karfe Mai Alloy
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ASTM A192, ASTM A179, ASTM A209, ASTM A210 bututun tukunyar ƙarfe
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Bututun Karfe na ERW Mai Juriya da Wutar Lantarki
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SANS 657-3, EN 10305, DIN 2391 Bututun Karfe Masu Inganci/Bututu
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Bututun Scaffolding da Kayan Haɗi na Galvanized