冷拔精密无缝钢管(标准:PN-EN 10305-1)
生产方法及用途
冷拔无缝管的直径为4-120 mm 厚度至12,5 mm. 这种管也可以通过热处理(正火或退火)生产.
它的优点是生产精度高, 表面质量好。广泛用于机械和汽车行业。
钢种
优质非合金钢:E215, E235, E355, E255, E410, 26Mn5, 10S10, 15S10, 18S10, 37S10,
特殊非合金钢C35E i C45E, 特殊合金钢26Mo2, 25CrMo4 i 42CrMo4
尺寸
外直径: 4 至120 mm
厚度至: 12,5 mm
长度: 3 至7 m
试验方法与要求
试验: 化学分析, 拉力测试, 尺寸检查, 外观检查.
直线度: < 0,0015 管的长度(每1米管小于3mm).
密封性: 管应该通过水压试验(7Mpa) 或电磁试验.
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