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Construction Hardware Formwork Rod Coil BoltsHexagonal bolt: a fastener consisting of two parts of the head and the screw (the cylinder with the outer thread), which needs to be fitted with the nut to tighten the connecting two parts with a
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Formwork Coil Bolt Hex Head for ConcreteProduct Description formwork coil bolt hex head for concrete The formwork coil bolt is made of 40Cr high carbon alloy steel .the surface finish of the concrete coil bolt is black finish not plain.
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