非合金结构钢和细晶粒结构钢的冷成形结构空心型材 (标准:10219-1,2)
生产方法及用途:
冷制造的圆形,方形和矩形封闭空心型材非合金结构钢和细晶粒钢. 由于它们的耐用性和简单的结构它可以使用于制造坚固耐用的结构而且可以保持比较低的成本. 空心型材可以使用于建筑物,机器或设备的框架结构. 还可以被用于桥梁,桅杆和其他结构的建造中。非合金和细晶粒的钢种在PN-EN 10210-1,2标准里. 这种管不需要进行密封性试验。
钢种
非合金钢: S235JRH, S275JOH, S275J2H, S355JOH, S355J2H
细晶钢: S275NH, S275NLH, S355NH, S355NLH, S460NH, S460NLH
尺寸
外直径: 21,3 mm 至1219,0 mm
厚度do 50 mm
长度: 6 - 12 m
试验方法与要求:
管根据相关标准的要求进行试验:
冶炼分析,拉力测试,厚度6mm以上管的冲击试验
除了这些还有别的试验方法.
直线度: 0,2 % 沿整个长度(圆管)
0,4 % 沿整个长度和在测点.
密封性试验: 不需要
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