HB 0-19-2011
开口弯边
Notch flange relief-convex flanges
2011-07-19
HB 0-17-2003
凸弯边
Convex bending rim
2003-09-25
HB 0-18-2003
凹弯边
Concave bending rim
2003-09-25
HB 0-20-2011
皱纹弯边
Crimp flange relief-convex flanges
2011-07-19
HB 0-14-2003
弯边减轻孔
Reduce weight holes with bending rim
2003-09-25
HB 0-15-2003
60°弯边减轻孔
60° reduce weight holes with bending rim
2003-09-25
T/CECS 10146-2021
复杂卷边冷弯型钢
2021-08-12
GB/T 6723-2017
通用冷弯开口型钢
Cold forming open section steel for general structure
2017-05-31
GOST 18880-1973
Резцы токарные подрезные отогнутые с пластинами из твердого сплава. Конструкция и размеры
硬质合金弯边工具 设计和尺寸
YB/T 4627-2017
开口型材冷弯型钢机组技术要求
Technical specification of roll forming mills for opening roll-formed steel
2017-07-07
TB/T 2706.1-1996
铁路客车冷弯型钢系列之一 车顶边梁
1996-07-17
MIL MIL-DTL-52618/2E Notice 1-Validation 1
Fittings, Pipe, Aluminum-Alloy Threaded 150-Pound, Reducers and Close and Open Pattern Return Bends (Straight Sizes)
150磅铝合金螺纹管件、异径管和闭合式和开口式回位弯管（直尺寸）
2018-03-09
MIL MIL-DTL-52618/2D Notice 1-Validation
Fittings, Pipe, Aluminum-Alloy (Threaded) 150-Pound Reducers and Close and Open Pattern Return Bends (Straight Sizes)
铝合金管配件（螺纹）150磅异径管和闭合式和开口式回位弯管（直尺寸）
2007-09-06