Kayayyaki
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ASTM A500 Pre-galvanized Square Karfe bututu
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Bututun Karfe Mai Zafi na BS 1387
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ASTM A795 Mai Zafi-Tushe Galvanized ERW Grooved Karfe Bututu
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ASTM A53 GR.B Bututun ƙarfe mai walƙiya mai zafi na galvanized
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ASTM A192 ASTM A179 ASTM A209 ASTM A210 Fini Tube don Canja Zafi
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Bututun Karfe Mai Rami Don Hanyar Ruwa Mai Sarrafawa
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Rijiyar Mai Bututun Karfe API 5CT L80 BTC R3
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Bututun Karfe na API 5CT N80 R3 don Rijiyar Mai
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ASTM A106 GR.B Bututun Karfe mara sumul don ruwa