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  • How steel pipe is made material, manufacture, making, history .

    Steel pipes are long, hollow tubes that are used for a variety of purposes. . Archeological evidence suggests that the Chinese used reed pipe for transporting water to desired . The pipe was finished by passing it through a groove and rolling mill. . In one method, a hole was drilled through a solid metal, round billet.

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  • Our Service

    What you need is what we can do! In the future, Xinhai will continue to rely on three big supporting "technology, talents, management", adhere to the international development strategy, and concentrate on providing customers with modern, efficient, energy-saving mine overall construction and operational solution, to create international leading enterprises in mining industry.