产品详细信息
Seamless piping begins as a solid cylindrical hunk of steel called a billet. While still hot, billets are pierced through the center with a mandrel. The next step is rolling and stretching the hollow billet. The billet is precisely rolled and stretched until it meets the length, diameter and wall thickness as specified by the customer order.
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公司详细资料
BAOWI STEEL MANUFACTURING CO.,LTD(www.baowi-steel.com)
Baowi is a steel production enterprise integrating ironmaking, s...