METHOD FOR COOLING HOT-ROLLING SHEETS
This invention is suitable to make the benk of steel pipe (especially the welded high-pressure steel pipe), as well as copper and aluminium pipes. By using cold pressing bending technology, formed bend is shaped via a steel ball shaping process to obtain a bend with better shape. The difference in t...
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Zusammenfassung: | This invention is suitable to make the benk of steel pipe (especially the welded high-pressure steel pipe), as well as copper and aluminium pipes. By using cold pressing bending technology, formed bend is shaped via a steel ball shaping process to obtain a bend with better shape. The difference in thickness of pipe wall is less than 0.3 mm. The bearing pressure at normal temp. erature can reach 25 x 10 to the power 5 Pa. The bend features dense organization and high strength. |
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