Bututun Karfe na ERW da aka welded
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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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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
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Shagunan murabba'i da murabba'i