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Item: en74 scaffolding forged double coupler
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Size: 48.3mm x 48.3mm(1 29/32”x1 29/32”)
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Material : carbon steel
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Standard : BS1139 (1982 & 1991), EN74 class A & B, AS1576
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Surface: self-colored, galvanized, hot dip galvanized
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Nut size: 17mm, 19mm, 21mm, 22mm, 23mm
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Stype: British stype, American stype, Germany stype etc.