2, precision steel pipe is a product of recent years, m國語影院ainly the inner hole, outer wall size, strict tol資源好姑娘erances and roughness.
Cold drawn precision steel pipe features: 1) less outer di中文版直播ameter. 2) high accuracy, small batch production成全高清. 3) cold finished products have high accuracy and good 姑娘國語surface quality. 4) the transverse area of steel pipe is more complicated. 5) steel pipe performance is superior, metal mor免費丁香花e closely.
The difference between hot rolled precision steel pip高清版GOe
With the continuous casting round billet slab or s藝術動漫teel tubeshot rolledprecision steel as ra資源中文版w material, after reheating furnace heating, des丁香花GOcaling into the roughing mill of high pressu中文版噼裡啪啦re water, roughing material by cutting head, 藝術大地tail, and then enter the finishing mill,資源丁香花 the implementation of the computer controlled rolling高清丁香花 and after rolling through the laminar cooling成全國語 and coiling machine, coiling become straight hair volume. Hair straightenerrollhead, tail tongue shapeand th姐姐資源efishtail shape, thickness, width of poor acc姑娘資源uracy, edgehaswavy, folding, tower and other defects. The coil weight is heavy, and the inner diameter of the 中文版高清版steel coil is 760mm. Thestraightthroughcutting head cutting, cutti美麗國語ng tail, cutting edge and multi pass straightening an在線MVd leveling finishing line processing, cutting board 影院好姑娘or heavy volume, which becomes: hot rolled steel p中文版MVlate and flat steel coils, slittingstripand other products在線TV. Hot finishing rolling by pickling descaling and高清高清 oil is made by pickling hot-rolled coils.
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