PHC pipe pile plank in end is usually produced by cutting steel plank or forging, and then machining.
2
炒是把从矿山浇铸成的生铁块重新加工，经过锻打、拉拔工序，生产成各式各样的产品。
Speculation is to cast from the mine into raw iron to re-processing, through forging and drawing processes, the production into a wide range of products.
3
辊体材料锻打件壁厚为32 mm内外加工，热处理、精涂铬后抛光。
Beating 20-roll material thickness of 32mm and outside processing, heat treatment, precision polishing Mr Chromium.
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