矩形 规格表

Rectangular Specifications — 301个尺寸
KS D 3568JIS G 3466ASTM A500

KSRectangular

64 sizes
NominalWidthHeighttWeightMaterial
30×2030201.20.868SRT275
30×2030201.61.12SRT275
40×2040201.21.06SRT275
40×2040201.61.38SRT275
50×2050201.61.63SRT275
50×2050202.32.25SRT275
50×3050301.61.88SRT275
50×3050302.32.62SRT275
60×3060301.62.13SRT275
60×3060302.32.98SRT275
60×3060303.23.99SRT275
60×4060401.62.38SRT275
60×4060402.33.34SRT275
60×4060403.24.5SRT275
75×2075201.62.25SRT275
75×2075202.33.16SRT275
75×4575451.62.88SRT275
75×4575452.34.06SRT275
75×4575453.25.5SRT275
80×4080401.62.88SRT275
80×4080402.34.06SRT275
80×4080403.25.5SRT275
90×4090402.34.42SRT275
90×4090403.26SRT275
100×20100201.62.88SRT275
100×20100202.34.06SRT275
100×40100401.63.38SRT275
100×40100402.34.78SRT275
100×50100501.63.64SRT275
100×50100502.35.14SRT275
100×50100503.27.01SRT275
100×50100504.59.55SRT275
125×40125401.64.01SRT275
125×40125402.35.69SRT275
125×75125752.36.95SRT275
125×75125753.29.52SRT275
125×7512575411.7SRT275
125×75125754.513.1SRT275
125×7512575617SRT275
150×75150753.210.8SRT275
150×75150754.514.9SRT275
150×80150804.515.2SRT275
150×8015080516.8SRT275
150×8015080619.8SRT275
150×1001501003.212SRT275
150×1001501004.516.6SRT275
150×100150100621.7SRT275
150×100150100931.1SRT275
200×1002001004.520.1SRT275
200×100200100626.4SRT275
200×100200100938.2SRT275
200×1502001504.523.7SRT275
200×150200150631.1SRT275
200×150200150945.3SRT275
200×1502001501258.5SRT275
300×200300200645.2SRT275
300×200300200966.5SRT275
300×2003002001286.8SRT275
350×150350150645.2SRT275
350×150350150966.5SRT275
350×1503501501286.8SRT275
400×200400200654.7SRT275
400×200400200980.6SRT275
400×20040020012106SRT275

矩形截面方管,用于梁、加强件和机械框架。

实务注意事项

  • 长边朝向载荷方向可获得更大截面模数和弯曲强度。
  • 同等重量下比圆管更节省空间;焊接支架更方便。

选型指南

用于需要定向强度的梁和加强件。将长边朝向载荷方向以获得更大的截面模量和抗弯强度。适用于机架、输送机梁和结构横撑。

主要特点

  • KS D 3568 (SPSR),长边×短边比(如50×30–400×200 mm)提供方向性刚度
  • 长边方向高截面系数,优化用于梁
  • 轻量化下高弯曲刚度,用于替代H型钢的轻型结构

主要应用领域

输送机支撑梁、楼梯扶手、卡车货箱框架、门窗框架、货架结构

常见问题

矩形钢管用作梁时方向重要吗?

非常重要。长边朝垂直方向(受力方向)放置以最大化截面模量。反向放置会大幅降低强度。

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