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{"title":"Factory Supply S235JR S355JR Square Tube with Black Surface Treatment Size 40*40","imgUrl":"https:\/\/img.chinax.com\/nimg\/96\/b7\/b1955810c8622d5473f345668afd-200x200-1\/factory_supply_s235jr_s355jr_square_tube_with_black_surface_treatment_size_40_2a40_500_2a500.jpg","attrs":{"Minimum Order Quantity":"50 Tons","Price":"US $650-1,250 \/ Ton","Section Shape":"Square","Size Range":"40*40 - 500*500"}}
{"title":"S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30","imgUrl":"https:\/\/img.chinax.com\/nimg\/d1\/ef\/b47b514f844a1c5f6fd437deec8f-200x200-1\/s355jr_carbon_steel_seamless_square_tube_with_black_surface_treatment_in_30_2a30_500_2a500_sizes.jpg","attrs":{"Minimum Order Quantity":"50 Tons","Price":"US $650-1,250 \/ Ton","Section Shape":"Square","Size Range":"30*30-500*500"}}
{"title":"Black Surface Galvanized Square Steel Tube 30*30-500*500 for Construction and","imgUrl":"https:\/\/img.chinax.com\/nimg\/44\/e5\/70415462ddb53481afb82e500ab1-200x200-1\/black_surface_galvanized_square_steel_tube_30_2a30_500_2a500_for_construction_and_machinery.jpg","attrs":{"Minimum Order Quantity":"50 Tons","Price":"US $651-985 \/ Ton","Section Shape":"Square","Size Range":"30*30-500*500"}}
{"title":"Low Carbon Seamless Square Steel Pipe with Black Surface Treatment and 30*30-500","imgUrl":"https:\/\/img.chinax.com\/nimg\/ca\/5d\/e7e879193fd877bb13615e5373a8-200x200-1\/low_carbon_seamless_square_steel_pipe_with_black_surface_treatment_and_30_2a30_500_2a500_size_range.jpg","attrs":{"Minimum Order Quantity":"50 Tons","Price":"US $652-986 \/ Ton","Surface Treatment":"Black","Section Shape":"Square"}}
{"title":"China Black Surface Treatment Seamless Square Steel Pipe 30*30-500*500 for","imgUrl":"https:\/\/img.chinax.com\/nimg\/3a\/1b\/dd8d4123867ed58b6ca2022440eb-200x200-1\/china_black_surface_treatment_seamless_square_steel_pipe_30_2a30_500_2a500_for_construction_and_machinery.jpg","attrs":{"Minimum Order Quantity":"10 Tons per size","Price":"US $653-987 \/ Ton","Surface Treatment":"Black","Section Shape":"Square"}}
{"title":"Black Surface Treatment Square Steel Tube 10*10 to 400*400 Size Range Factory","imgUrl":"https:\/\/img.chinax.com\/nimg\/13\/74\/feb5c75461aaa1380c96c199cd8c-200x200-1\/black_surface_treatment_square_steel_tube_10_2a10_to_400_2a400_size_range_factory_direct_supply.jpg","attrs":{"Minimum Order Quantity":"10 Tons per size","Price":"US $654-988 \/ Ton","Section Shape":"Square","Size Range":"10*10 to 400*400"}}
High-quality square pipe hollow black iron S275JR welded square steel pipe designed for structural applications.
Product Specifications
Available Dimensions
Product Type
Size Range
Thickness
Length
Round Pipe
OD 310mm - 1000mm
4mm - 30mm
Any length
Square Pipe
10mm×10mm - 1000mm×1000mm
1.2mm - 30.0mm
Standard lengths
Rectangle Pipe
20mm×40mm - 400mm×700mm
1.2mm - 30.0mm
Standard lengths
L/T/Z Window Section
28mm/38mm
0.5mm - 1.5mm
Standard lengths
Product Details
Material: Q195, Q215, Q235, Q345, etc.
Surface: Black or bright, painted or oiled
Packing: Export standard packing (bundles, seaworthy package, shipped in container)
Delivery Port: Shanghai, China
Lead Time: Within 30 days after receiving original L/C or deposit
MOQ: 10 Tons per size
Usage: Widely used in structure; Motorbike and Automobile; Ornamental; Medical equipment; Sport equipment and Home furniture
Production Capacity: 10,000MT per month
Main Market: Europe, America, Africa, Southeast Asia
EN 10025 S355 Steel
S355 steel is a European standard structural steel grade according to EN 10025-2:2004, offering superior properties compared to S235 and S275 steel in yield strength and tensile strength.
S355 Steel Quality Grades
S355JR (1.0045)
S355J0 (1.0553)
S355J2 (1.0577)
S355K2 (1.0596)
Steel Grade Designation Meaning
"S": Structural steel
"355": Minimum yield strength value for flat and long steel thickness ≤ 16mm
"JR": Impact energy value minimum 27 J at room temperature (20°C)
"J0": Withstands impact energy at least 27 J at 0°C
"J2": Minimum impact energy value 27 J at -20°C
"K2": Minimum impact energy value 40 J at -20°C
Technical Datasheet and Specifications
Chemical Composition
Standard
Steel
Grade
C
Si
Mn
P
S
Cu
N
Method of Deoxidation
EN 10025-2
S355
S355JR
0.24
0.55
1.60
0.035
0.035
0.55
0.012
Rimmed steel not allowed
S355J0 (S355JO)
0.20
0.55
1.60
0.030
0.030
0.55
0.012
-
S355J2
0.20
0.55
1.60
0.025
0.025
0.55
-
Fully killed
S355K2
0.20
0.55
1.60
0.025
0.025
0.55
-
Fully killed
Mechanical Properties - Yield Strength
Steel
Steel Grade
d≤16
16< d ≤40
40< d ≤63
63< d ≤80
80< d ≤100
100< d ≤150
150< d ≤200
200< d ≤250
S355
S355JR (1.0045)
355
345
335
325
315
295
285
275
S355J0 (1.0553)
Same as S355JR
S355J2 (1.0577)
Same as S355JR
S355K2 (1.0596)
Same as S355JR
Mechanical Properties - Tensile Strength
Steel
Steel Grade
d<3
3 ≤ d ≤ 100
100 < d ≤ 250
S355
S355JR
510-680
470-630
450-600
S355J0 (S355JO)
Same as S355JR
S355J2
Same as S355JR
S355K2
Same as S355JR
Mechanical Properties - Elongation
Steel
Steel Grade
3≤d≤40
40< d ≤63
63< d ≤100
100< d ≤ 150
150< d ≤ 250
S355
S355JR
22
21
20
18
17
S355J0 (S355JO)
Same as S355JR
S355J2
Same as S355JR
S355K2
20
19
18
18
17
Product Images
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification:
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...