Circular hollow sections (CHS) are structural members with a circular cross-section. CHS are the strongest and most efficient type of hollow section, and are often used in applications where high strength and stiffness are required, such as columns, beams, and struts.
CHS are available in a wide range of sizes, from small diameter tubes with wall thicknesses of a few millimeters to large diameter tubes with wall thicknesses of several centimeters. CHS can also be manufactured to different lengths, depending on the specific application.
STEEL TUBE FOR STRUCTURAL PURPOSES
TOLERANCE
A) OUT SIDE DIAMETER :-1. UPTO & INCLUDING 48.3 MM = +0.4 MM/ -0.8 MM
2. OVER 48.3 MM = ±1.0 %
B) THICKNESS (FOR ALL SIZES) :-1. WELDED TUBES : ±10%
C) WEIGHT : -1. SINGLE TUBE : ±10 %
2. 10 TONNE LOTS : ±7.5%
TENSILE PROPERTIES
S.NO. | GRADE | Y.S (Min.)MPa | T.S (Min.)MPa | ELONGATION% |
---|---|---|---|---|
1 | Yst 210 | 210 | 330 | 20 |
2 | Yst 240 | 240 | 410 | 17 |
3 | Yst 310 | 310 | 450 | 14 |
4 | Yst 355 | 355 | 490 | 10 |
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