Iso 657-21
热轧钢型材 — 第21部分:等腿T型材 — 尺寸
Hot-rolled steel sections — Part 21: T-sections with equal depth and flange width — Dimensions
查看详情 ↗原文资料
Dimensional standards 与“尺寸标准”相关的标准资料,支持在当前标签内搜索。
Hot-rolled steel sections — Part 21: T-sections with equal depth and flange width — Dimensions
ISO Metric Trapezoidal external screw threads from 105 to 300 mm diameter; limits