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Cold-formed structural square steel pipe

Square Steel Tubes (SHS) are ideal when symmetrical and aesthetically pleasing hollow profiles are required, along with an ideal balance of strength and practicality.

Cold-formed square steel pipes are made of custom-made steel strips or custom-made steel plates directly into a square shape by cold forming, and then completed by a high-frequency welding process.

Cold Formed Structural Square Steel Pipe
Characteristics of cold formed square tube

S235JRH Cold Formed Square Tube:
Non-magnetic, easier to strengthen and harden by cold working process. Has good machinability and excellent fire resistance. Widely used in civil engineering and construction industries, such as building buildings, bridges and dams.

S275J0H Cold Formed Square Tube:Due to its important properties such as high tensile strength and high resistance to electrical conductivity, it is mainly used to transport electricity, water, etc.

S275J2H Cold Formed Square Tube:Rust-free, corrosion-resistant, and easy to use in high-temperature environments. It has durability, high tensile strength, and strong resistance to acidic environments, and is mostly used in food processing equipment and food packaging equipment.

S355J0H Cold Formed Square Tube:High tensile strength, corrosion resistance, heat resistance, sturdy, easy to install, it has great uses in steel structure, solar bracket, electric power, steel structure engineering, steel structure engineering, machinery manufacturing, shipbuilding, etc. Can also be used in food processing units and food packaging units.

S355J2H Cold Formed Square Tube:Has better static properties. In addition, lighter construction, less resistance to water and air, and good visuals give it an edge. Suitable for industrial applications with small surface and interior space, such as wire, cable, concrete, etc. It can be used effectively in the temperature range of 932°F to 1472°F (500°C to 800°C).

Cold rolled square tube
Cold forming square pass
Product supply

The available grades of square steel pipes are EN, ASTM, GB and JIS.
The section size of the cold-formed structural square steel pipe can reach 800mm and the thickness can reach 35mm. The normal supply length is 6m~12m, but other lengths of 4m~16m can be provided upon request. Additionally, other lengths are available upon request. This meets almost all international quality standards and undergoes various tests.

Steel pipe implementation standard:EN 10219-2 : 2006
Steel pipe material grade:S235JRH,S275J0H,S275J2H,S355J0H,S355J2H,S275NH,S420MH,S460MH, IS 4923 / ASTM A500

Cold-formed structure square pass
Cold-formed square tubes can be used in their natural state or can be shot peened, primed sawed, drilled or milled.
Surface Protection: Black (Natural Uncoated), Clear/Oil Coated, Pre-Galvanized, Hot-Dip Galvanized
Metal slings are generally bundled into rectangles for storage and transportation.
square steel pipe
European standard square steel pipe
Pipe Specifications

European Standard BS EN 10219-2: 2006

size(D x B) thickness(t) unit weight
mm mm kg/m
20 x 20 2.0 1.05
25×25 2.0 1.36
2.5 1.64
3.0 1.89
30 x 30 2.0 1.68
2.5 2.03
3.0 2.36
40×40 2.0 2.31
2.5 2.82
3.0 3.30
4.0 4.20
50×50 2.0 2.93
2.5 3.60
3.0 4.25
4.0 5.45
5.0 6.56
60 x 60 2.0 3.56
2.5 4.39
chemical composition
grade The chemical composition is not more than Max.(%)
C Si Mn P S N
S235JRH 0.17 1.4 0.040 0.040 0.009
S275J0H 0.20 1.5 0.035 0.035 0.009
S275J2H 0.20 1.5 0.030 0.030
S355J0H 0.22 0.55 1.6 0.035 0.035 0.009
S355J2H 0.22 0.55 1.6 0.030 0.030


grade The chemical composition is not more than Max.(%)
C Si Mn P S Nb V Al
(Min.)
Ti Ni Mo N
S275MH 0.13 0.50 1.50 0.035 0.030 0.050 0.08 0.020 0.050 0.30 0.20 0.020
S275MLH 0.030 0.025
S420MH 0.16 0.50 1.70 0.035 0.030 0.050 0.12 0.020 0.050 0.30 0.20 0.020
S420MLH 0.030 0.025
Mechanical behavior
grade Yield strength not less than Min.(N/mm2) tensile strength(N/mm2)
t≤16 16<t≤40 40<t≤63 63<t≤80 80<t≤100 100<t≤120 t≤3 3<t≤100 100<t≤120
S235JRH 235 225 215 215 215 195 360~510 360~510 350~500
S275J0H 275 265 255 245 235 225 430~580 410~560 400~540
S275J2H
S355J0H 355 345 335 325 315 295 510~680 470~630 450~600
S355J2H
S275MH 275 265 360~510 360~510
S275MLH
S420MH 420 400 500~660 500~660
S420MLH


grade The elongation is not less than Min.(%) Minimum impact energy KV(J)
t≤40 40<t≤63 63<t≤100 100<t≤120 -50℃ -20℃ 0℃ +20℃
S235JRH 26(24) 25 24 22 27
S275J0H 23(20) 22 21 19 27
S275J2H 27
S355J0H 22(20) 21 20 18 27
S355J2H 27
S275MH 24 40
S275MLH 27
S420MH 19 40
S420MLH 27
Huangshangyou square tube
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