We Super Steel Manufacturing Co.,Ltd(SMC) are amongst the top manufacturers and suppliers for the seamless steel pipe, welded steel pipe, OCTG products and fittings from China. We have been manufacturing and supplying these products to the industry since 1993, and received repeat orders and appreciation from our valued customers.
High quality piping products from approved manufacturers.
In order to continuously improve our offerings to our clients, we have consistently improved and upgraded our manufacturing facility and can hence offer material with stringent requirements.
Over the years, Super Steel Manufacturing Co.,Ltd(SMC) has developed an enviable reputation for project management for the Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical and other heavy industries.
The many years of experience that we have means that there is always someone who has the ability to carry a project forward.
Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.
Cold Formed Square Hollow Section Specification
Standard : BS EN 10219 - Cold Formed Welded Structural Hollow Sections of Non-alloy and Fine Grain Steels
SHS (Square Hollow Sections) Sizes : 20*20mm-600*600mm
Wall Thickness : 0.5mm - 25mm
Length : 6000-14000 mm
Type : Seamless/ Welded / ERW
Dimensional Tolerances : Thickness : (All sizes +/- 10%)
Packing : In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or square cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Available Grades : S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355J2+N, IS 4923 / ASTM A500 / As Per Requirement
Surface Protection: Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized
Hot Finish Square Hollow Section Specification
Standard : BS EN 10210 - Hot Finished Structural Hollow Sections of Non-alloy and Fine Grain Steels
Sizes : 20*20mm-600*600mm
Wall Thickness : 0.5mm - 25mm
Length : 6000-14000 mm
Type : Seamless/ Welded / ERW
Dimensional Tolerances : Thickness : (All sizes +/- 10%)
Packing : In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or square cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Available Grades : S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355J2+N, IS 4923 / ASTM A500 / As Per Requirement
Surface Protection: Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized
SS Square Hollow Section Specification
Specifications : ASTM A554 / ASME SA554
Sizes : 20*20mm-400*400mm
Wall Thickness : 0.5mm - 25mm
Length : Up to 6 meters, custom cut lengths
Type : Seamless/ Welded / ERW
Packing : In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or square cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Available Steel Grades : 304, 304L, 304H, 316, 316L, 316H, 316Ti, 321, 321H, 310S, 202, 409, 409L / As Per Requirement
Finish : 2B, No.1 Pickled Finish, No.4 finish, BA Finish, No.8 Mirror Finish, Electropolished Square Pipes
Delivery Condition: Bright Annealed, Polished or Annealed and Pickled
|
Size (mm) |
Wall Thickness (mm) |
Size (mm) |
Wall Thickness (mm) |
|
20*20 |
1.2 |
70*70 60*80 100*40 |
1.8 |
|
1.3 |
2 |
||
|
1.4-1.5 |
2.2 |
||
|
1.7 |
2.3 |
||
|
1.8 |
2.5-4.0 |
||
|
2 |
4.5-5.0 |
||
|
2.2 |
5.5-5.75 |
||
|
2.3 |
75*75 60*90 100*50 |
1.8 |
|
|
2.5-2.75 |
2 |
||
|
25*25 20*30 |
1.2 |
2.2 |
|
|
1.3 |
2.3 |
||
|
1.5 |
2.5-4.0 |
||
|
1.7 |
4.5-5.0 |
||
|
1.8 |
5.5-5.75 |
||
|
2 |
80*80 100*60 100*80 120*60 |
2 |
|
|
2.3-2.3 |
2.2 |
||
|
2.5-3.0 |
2.3 |
||
|
30*30 30*40 25*40 20*40 |
1 |
2.5-4.0 |
|
|
1.2 |
4.5-5.0 |
||
|
1.3 |
5.5-5.75 |
||
|
1.5 |
7.5-7.75 |
||
|
1.7 |
100*100 120*80 |
2 |
|
|
1.8 |
2.2 |
||
|
2 |
2.3 |
||
|
2.2 |
2.5-5.0 |
||
|
2.3 |
5.5-5.75 |
||
|
2.5*2.75 |
7.5-7.75 |
||
|
3 |
120*120 140*80 150*100 160*80 |
2.5 |
|
|
40*40 30*50 25*50 |
1.2 |
2.75 |
|
|
1.3 |
3 |
||
|
1.4-1.5 |
3.25-5.0 |
||
|
1.7 |
5.5-7.0 |
||
|
1.8 |
7.5-7.75 |
||
|
2 |
140*140 150*150 200*100 |
3.5-4.0 |
|
|
2.2-2.3 |
4.5-5.0 |
||
|
2.5-4.0 |
5.25-7.0 |
||
|
50*50 60*40 30*60 40*50 |
1.5 |
7.5-7.75 |
|
|
1.7 |
160*160 180*180 |
3 |
|
|
1.8 |
3.5 |
||
|
2 |
3.75 |
||
|
2.2 |
4.0-5.0 |
||
|
2.3 |
5.25-5.75 |
||
|
2.5*-4.0 |
7.5-7.75 |
||
|
4.25-5.0 |
60*60 40*80 75*75 50*70 50*80 |
2.3 |
|
|
60*60 40*80 75*45 50*70 50*80 |
1.5 |
2.5-4.0 |
|
|
1.7 |
4.25-5.0 |
||
|
1.8 |
5.5-5.75 |
||
|
2 |
/ |
||
|
2.2-2.3 |
/ |
Chemical composition of material
| Grade |
element |
C | Mn | P | S |
| ASTM A500 Gr.b | % | 0.05%-0.23% | 0.3%-0.6% | 0.04% | 0.04% |
| Acc.to EN10027/1 | Acc.to EN10027/2 | C% max (Norminal W.T.(mm) | Si% max | Mn% max | P% max | S% max | N% max | |
|
and IC 10 |
|
≤ 40 |
|
|||||
| S235JRH | 1.0039 | 0.17 | 0.20 | - | 1.40 | 0.045 | 0.045 | 0.009 |
| S275JOH | 1.0149 | 0.20 | 0.22 | - | 1.50 | 0.040 | 0.040 | 0.009 |
| S275J2H | 1.0138 | 0.20 | 0.22 | - | 1.50 | 0.035 | 0.035 | - |
| S355JOH | 1.0547 | 0.22 | 0.22 | 0.55 | 1.60 | 0.040 | 0.040 | 0.009 |
| S355J2H | 1.0576 | 0.22 | 0.22 | 0.55 | 1.60 | 0.035 | 0.035 | - |
Mechanical properties of material
| Grade |
Yield Strength |
Tensile Strength |
Elongation |
|
A500.Gr.b |
46 ksi | 58 ksi | 23% |
| A513.GR.B | 72 ksi | 87 ksi | 10% |
| Norm | Yield Strength | Tensile Strength | Min.elogation | Min.percent properties | ||||||||
|
Acc.to EN10027/1 and IC 10
|
Acc.to EN10027/2 | Norminal W.T.mm | Norminal W.T.mm | Longit. | Cross | Test temperature°C | Average min.impact value | |||||
|
≤16 |
>6 |
>40 |
<3 |
≤3≤65 |
Norminal W.T.mm |
|||||||
|
≤65 |
≤65 |
≤40 |
>40 |
>40 |
≤65 |
|||||||
|
≤65 |
≤40 |
|||||||||||
| S253JRH | 1.0039 | 235 | 225 | 215 | 360-510 | 340-470 | 26 | 25 | 24 | 23 | 20 | 27 |
| S275JOH | 1.0149 | 275 | 265 | 255 | 410-580 | 410-560 | 22 | 21 | 20 | 19 | 0 | 27 |
| S275J2H | 1.0138 | 275 | 265 | 255 | 430-560 | 410-560 | 22 | 21 | 20 | 19 | -20 | 27 |
|
S355JOH |
1.0547 | 355 | 345 | 335 | 510-680 | 490-630 | 22 | 21 | 20 | 19 | 0 | 27 |
| S355J2H | 1.0576 | 355 | 345 | 335 | 510-680 | 490-630 | 22 | 21 | 20 | 19 | -20 | 27 |
Equivalent specfications
|
EN 10210-1 |
NF A 49501 NF A 35501 |
DIN 17100 DIN 17123/4/5 |
BS 4360 |
UNI 7806 |
| S235JRH | E 24-2 | St 37.2 | – | Fe 360 B |
| S275JOH | E 28-3 | St 44.3 U | 43 C | Fe 430 C |
| S275J2H | E 28-4 | St 44.3 N | 43 D | Fe 430 D |
| S355JOH | E 36-3 | St 52.3 U | 50 C | Fe 510 C |
| S355J2H | E 36-4 | St 52.3 N | 50 D | Fe 510 D |
| S275NH | – | St E 285 N | – | – |
| S275NLH | – | TSt E 285 N | 43 EE | – |
| S355NH | E 355 R | St E 355 N | – | – |
| S355NLH | – | TSt E 355 N | 50 EE | – |
| S460NH | E 460 R | St E 460 N | – | – |
| S460NLH | – | TSt E 460 N | 55 EE | – |
plastic plugs in both ends, hexagonal bundles of max. 2,000kg with several steel strips, two tags on each bundle, wrapped in waterproof paper, pvc sleeve, and sackcloth with several steel strips
inspection: chemical component analysis, mechanical properties
|
Size (mm) |
Wall Thickness (mm) |
Size (mm) |
Wall Thickness (mm) |
|
20*20 |
1.2 |
70*70 60*80 100*40 |
1.8 |
|
1.3 |
2 |
||
|
1.4-1.5 |
2.2 |
||
|
1.7 |
2.3 |
||
|
1.8 |
2.5-4.0 |
||
|
2 |
4.5-5.0 |
||
|
2.2 |
5.5-5.75 |
||
|
2.3 |
75*75 60*90 100*50 |
1.8 |
|
|
2.5-2.75 |
2 |
||
|
25*25 20*30 |
1.2 |
2.2 |
|
|
1.3 |
2.3 |
||
|
1.5 |
2.5-4.0 |
||
|
1.7 |
4.5-5.0 |
||
|
1.8 |
5.5-5.75 |
||
|
2 |
80*80 100*60 100*80 120*60 |
2 |
|
|
2.3-2.3 |
2.2 |
||
|
2.5-3.0 |
2.3 |
||
|
30*30 30*40 25*40 20*40 |
1 |
2.5-4.0 |
|
|
1.2 |
4.5-5.0 |
||
|
1.3 |
5.5-5.75 |
||
|
1.5 |
7.5-7.75 |
||
|
1.7 |
100*100 120*80 |
2 |
|
|
1.8 |
2.2 |
||
|
2 |
2.3 |
||
|
2.2 |
2.5-5.0 |
||
|
2.3 |
5.5-5.75 |
||
|
2.5*2.75 |
7.5-7.75 |
||
|
3 |
120*120 140*80 150*100 160*80 |
2.5 |
|
|
40*40 30*50 25*50 |
1.2 |
2.75 |
|
|
1.3 |
3 |
||
|
1.4-1.5 |
3.25-5.0 |
||
|
1.7 |
5.5-7.0 |
||
|
1.8 |
7.5-7.75 |
||
|
2 |
140*140 150*150 200*100 |
3.5-4.0 |
|
|
2.2-2.3 |
4.5-5.0 |
||
|
2.5-4.0 |
5.25-7.0 |
||
|
50*50 60*40 30*60 40*50 |
1.5 |
7.5-7.75 |
|
|
1.7 |
160*160 180*180 |
3 |
|
|
1.8 |
3.5 |
||
|
2 |
3.75 |
||
|
2.2 |
4.0-5.0 |
||
|
2.3 |
5.25-5.75 |
||
|
2.5*-4.0 |
7.5-7.75 |
||
|
4.25-5.0 |
60*60 40*80 75*75 50*70 50*80 |
2.3 |
|
|
60*60 40*80 75*45 50*70 50*80 |
1.5 |
2.5-4.0 |
|
|
1.7 |
4.25-5.0 |
||
|
1.8 |
5.5-5.75 |
||
|
2 |
/ |
||
|
2.2-2.3 |
/ |
Chemical composition of material
| Grade |
element |
C | Mn | P | S |
| ASTM A500 Gr.b | % | 0.05%-0.23% | 0.3%-0.6% | 0.04% | 0.04% |
| Acc.to EN10027/1 | Acc.to EN10027/2 | C% max (Norminal W.T.(mm) | Si% max | Mn% max | P% max | S% max | N% max | |
|
and IC 10 |
|
≤ 40 |
|
|||||
| S235JRH | 1.0039 | 0.17 | 0.20 | - | 1.40 | 0.045 | 0.045 | 0.009 |
| S275JOH | 1.0149 | 0.20 | 0.22 | - | 1.50 | 0.040 | 0.040 | 0.009 |
| S275J2H | 1.0138 | 0.20 | 0.22 | - | 1.50 | 0.035 | 0.035 | - |
| S355JOH | 1.0547 | 0.22 | 0.22 | 0.55 | 1.60 | 0.040 | 0.040 | 0.009 |
| S355J2H | 1.0576 | 0.22 | 0.22 | 0.55 | 1.60 | 0.035 | 0.035 | - |
Mechanical properties of material
| Grade |
Yield Strength |
Tensile Strength |
Elongation |
|
A500.Gr.b |
46 ksi | 58 ksi | 23% |
| A513.GR.B | 72 ksi | 87 ksi | 10% |
| Norm | Yield Strength | Tensile Strength | Min.elogation | Min.percent properties | ||||||||
|
Acc.to EN10027/1 and IC 10
|
Acc.to EN10027/2 | Norminal W.T.mm | Norminal W.T.mm | Longit. | Cross | Test temperature°C | Average min.impact value | |||||
|
≤16 |
>6 |
>40 |
<3 |
≤3≤65 |
Norminal W.T.mm |
|||||||
|
≤65 |
≤65 |
≤40 |
>40 |
>40 |
≤65 |
|||||||
|
≤65 |
≤40 |
|||||||||||
| S253JRH | 1.0039 | 235 | 225 | 215 | 360-510 | 340-470 | 26 | 25 | 24 | 23 | 20 | 27 |
| S275JOH | 1.0149 | 275 | 265 | 255 | 410-580 | 410-560 | 22 | 21 | 20 | 19 | 0 | 27 |
| S275J2H | 1.0138 | 275 | 265 | 255 | 430-560 | 410-560 | 22 | 21 | 20 | 19 | -20 | 27 |
|
S355JOH |
1.0547 | 355 | 345 | 335 | 510-680 | 490-630 | 22 | 21 | 20 | 19 | 0 | 27 |
| S355J2H | 1.0576 | 355 | 345 | 335 | 510-680 | 490-630 | 22 | 21 | 20 | 19 | -20 | 27 |
Equivalent specfications
|
EN 10210-1 |
NF A 49501 NF A 35501 |
DIN 17100 DIN 17123/4/5 |
BS 4360 |
UNI 7806 |
| S235JRH | E 24-2 | St 37.2 | – | Fe 360 B |
| S275JOH | E 28-3 | St 44.3 U | 43 C | Fe 430 C |
| S275J2H | E 28-4 | St 44.3 N | 43 D | Fe 430 D |
| S355JOH | E 36-3 | St 52.3 U | 50 C | Fe 510 C |
| S355J2H | E 36-4 | St 52.3 N | 50 D | Fe 510 D |
| S275NH | – | St E 285 N | – | – |
| S275NLH | – | TSt E 285 N | 43 EE | – |
| S355NH | E 355 R | St E 355 N | – | – |
| S355NLH | – | TSt E 355 N | 50 EE | – |
| S460NH | E 460 R | St E 460 N | – | – |
| S460NLH | – | TSt E 460 N | 55 EE | – |
plastic plugs in both ends, hexagonal bundles of max. 2,000kg with several steel strips, two tags on each bundle, wrapped in waterproof paper, pvc sleeve, and sackcloth with several steel strips
inspection: chemical component analysis, mechanical properties
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