金属复合管冷弯型钢机组技术要求
Technical specification of roll forming mills for metal composite tube
2017-07-07
YB/T 4249-2011
压型钢板机组技术要求
Technical specifcation of roll forming mills for profiled steel sheet
2011-12-20
YB/T 4628-2017
小口径厚壁管冷弯型钢机组技术要求
Technical specification of roll forming mills for small sized diameter & thicker wall tube
2017-07-07
GB/T 34385-2017
辊式冷弯成形机械通用技术条件
General technical specifications for cold roll forming machinery
2017-09-29
DIN 267-31
Fasteners - Technical specifications - Part 31: Metric thread rolling screws of property class 10.9 with additionally hardened thread forming zone
紧固件.技术规范.第31部分:具有额外硬化螺纹形成区的性能等级为10.9的公制螺纹滚动螺钉