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Carbon steel round tube

Carbon steel pipe, carbon welded pipe, carbon seamless steel pipe, API steel pipe using hot rolled steel pipe billet to make heating and piercing, elongating, sizing and straightening, cooling, finally hollow bars finished, this is the type most commonly used. Because it is hot rolled, so cost is lowest, but it is suit for large quantity, for small quantity, have to make cold drawn or round bar piercing. size: outer diameter?32mm- 499mm, wall thickness?4mm- 80mm

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