scaffolding joint pinstandard: BS1139ZINC COATEDThickness:4mm Not exactly what you want? 1 request,multiple quotations Get Quotations Now >> Yangzhou Chongxin Machinery Manufacture Co., Ltd. is the leading manufacturer and exporter of all kinds of scaffolding such as scaffolding couplers, props, board transom, ring systems, cuplock systems, ladders and other products.