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Cold formed circular steel tube

Cold Formed Round Steel Pipe (CHS) is manufactured from hot rolled coil with a smooth blue/grey finish and raised internal welds. Due to its good strength and weldability, cold-formed round tubes are commonly used as structural sections and are widely used in different industries.

The main forming process of the tube is carried out at room temperature, which has the additional effect of work hardening and strengthening the material, thereby further improving the mechanical properties of the material, but at the same time it is not as ductile as hot rolled steel pipe. Cold-formed structural tubes without subsequent heat treatment comply with the EN 10219 standard.

Characteristics of cold formed round tubes

Cold-rolled steel pipes have higher surface properties and dimensional accuracy for technically precise applications or those with high aesthetic requirements.

The main application areas of cold formed round tubes are as follows:
Fencing and Security
Automobile, motorcycle, bicycle industry
road and rail infrastructure
Metal structures and composite steel and concrete structures

cold formed tact
Product supply

The diameter of the cold-formed structure round steel pipe can be up to 1219mm, and 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.

Steel pipe implementation standard:EN 10219-2 : 2006
Steel pipe material grade:S235JRH,S275J0H,S275J2H,S355J0H,S355J2H,S275NH,S420MH,S460MH,S500MC,S700MC

Cold-formed structure tact
Cold-formed round tubes can be used in their natural state or can be shot peened, primed or sawn cut.
Hexagonal packaging is generally used for storage and transport, i.e. tied into a hexagonal form with metal slings to optimize its protection and handling.
Yuantong
Cold Formed Round Steel Pipe
Pipe Specifications

European Standard BS EN 10219-1:2006

outer diameter(D) thickness(t) unit weight
mm mm kg/m
21.3 2.0 0.95
3.0 1.35
26.9 2.0 1.23
2.5 1.50
3.0 1.77
33.7 2.0 1.56
2.5 1.92
3.0 2.27
4.0 2.93
42.4 2.0 1.99
2.5 2.46
3.0 2.91
4.0 3.79
48.3 2.0 2.28
2.5 2.82
3.0 3.35
4.0 4.37
5.0 5.34
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
round tube
Cold Formed Round Steel Pipe
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