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The square head bolt and hex head bolt is of various sizes. We offer full sizes and full grades. The surface of square head bolt and hex bolt can be plain, black, zinc, hdg, dacromet etc.
We can produce any kind of square head bolt or hex bolt according to customer’s drawings.
Shanghai Bosheng Industries is specialized in the supplying of rails, turnouts and various rail fastening materials such as rail fishplate, tie plate, rail clips, screw spikes, rail anchors, rail shoulder, rail pads and so on.
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