High Precision Drawn Seamless tube Seamless precision
标准
DIN2391,DIN2445,EN10305,GB / T 3639 GB 8713。
材料
ST35(E235),ST37,ST45(E255),ST52(E355),10#,20#,35#,45#,16Mn,40Cr
应用
用于生产产品的气动或液压部件
主要特征
1.加工精度高,节省加工用户的损失量
2.规格多,应用范围广
3.冷轧成品精度高,表面质量好,线性好。
4.钢管直径可做成六角形
5.钢管性能优越,金属比较致密
交货条件:
1. NBK(+ N)
最终在相变点之后,在退火氧化介质的保护气氛中进行冷成形
2. GBK(+ A)
冷成形后,在非氧化性介质中保护气体退火
3. BK(+ C)
冷成形后的最后热处理,所以小钢管塑性,塑性程度不保证
4. BKW(+ LC)
经过最终热处理后,进行微小的冷拉变形,在加工钢管时允许在一定范围内再次冷变形(弯曲,扩口)
5. BKS(+ SR)
冷成型后应力消除,热处理,钢管可以在一定的限度内进行适当的加工再处理
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