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Structural hollow sections: SHS, RHS and CHS

Standards, grades and finishes, with weight per metre for common sizes.

Imperial values are converted from metric; section and sheet designations stay metric.

Standards
EN 10219 (cold-formed) · EN 10210 (hot-finished) · ASTM A500 Gr.B / C
Grades
S235JRH · S275J0H · S355J2H
Finish
Black · varnished · pre-galvanised · HDG after fabrication (ISO 1461)
Length
6.0 m standard; 12.0 m to order19.7 ft standard; 39.4 ft to order
Units
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ST-HSStructural Hollow Sections

SHS, RHS and CHS — cold-formed and hot-finished tube.

BHtr₁r₀ = external corner radius
Square hollow section with dimensions
Standards
EN 10219 (cold-formed) · EN 10210 (hot-finished) · ASTM A500 Gr.B / C
Grades
S235JRH · S275J0H · S355J2H
Finish
Black · varnished · pre-galvanised · after fabrication (ISO 1461)
Length
6.0 m standard; 12.0 m to order19.7 ft standard; 39.4 ft to order
Light gauge
1.2–2.0 mm tube for enclosures, gates, furniture0.047–0.079 in tube for enclosures, gates, furniture

Cold-formed EN 10219 — theoretical mass (7.85 kg/dm³); hot-finished EN 10210 is heavier

SHS B × B × t (mm)
SHS B × B × t (mm)SHS B × B × t (in)
0.830.56
1.360.91
1.681.13
2.311.55
3.302.22
4.252.86
5.193.49
9.226.20
14.419.68
26.4017.74
RHS B × H × t (mm)
RHS B × H × t (mm)RHS B × H × t (in)
1.300.87
2.151.44
2.931.97
4.252.86
5.193.49
6.604.43
8.595.77
10.487.04
18.3312.32
26.4017.74
CHS D × t (mm)
CHS D × t (mm)CHS D × t (in)
0.950.64
1.230.83
1.991.34
2.551.71
3.252.18
4.513.03
5.753.86
6.764.54
9.836.61
13.399.00
SPECIFY ASST-HS · S355J2H · SHS 80 × 80 × 4 mm · EN 10219 · pre-galvanised · 6.0 m · EN 10204 3.1 · 240 lengths

Last reviewed 2026-09-26 by the Mulk Trading technical team

Standards referenced: EN 10219, EN 10210, ASTM A500, ISO 1461, EN 10204

Specifications and ranges are indicative; the quotation, order confirmation and mill certificate are binding.

Often specified with

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