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{"title":"S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30","imgUrl":"https:\/\/img.chinax.com\/nimg\/f6\/61\/80c99cfabc421dac22cf5c7af8ba-200x200-1\/s355jr_s355j0_s355j2_square_steel_pipe_and_square_tube_with_black_surface_in_30.jpg","attrs":{"Minimum Order Quantity":"50 Tons","Price":"US $650-1,250 \/ Ton","Model NO.":"S355JR S355J0 S355J2","Surface Treatment":"Black"}}
{"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 welded square steel pipes manufactured to EN 10025 standards, available in S355JR, S355J0, and S355J2 grades for structural applications.
Product Specifications
Product Type
Specification (mm)
Thickness
Length
Round Pipe
OD310mm - 1000mm
4mm - 30mm
Any length
Square Pipe
10mm×10mm - 1000mm×1000mm
1.2mm - 30.0mm
-
Rectangle Pipe
20mm×40mm - 400mm×700mm
1.2mm - 30.0mm
-
L/T/Z Window Section
28mm/38mm
0.5mm - 1.5mm
-
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: Structural applications, automotive, ornamental, medical equipment, sports equipment, and home furniture
Production Capacity: 10,000MT per month
Main Markets: Europe, America, Africa, Southeast Asia
EN 10025 S355 Steel Grades
S355 structural steel offers superior mechanical properties compared to S235 and S275 grades, with four main quality classifications:
S355JR (1.0045): Minimum 27J impact energy at 20°C
S355J0 (1.0553): Minimum 27J impact energy at 0°C
S355J2 (1.0577): Minimum 27J impact energy at -20°C
S355K2 (1.0596): Minimum 40J impact energy at -20°C
Chemical Composition
Steel Grade
C (%)
Si (%)
Mn (%)
P (%)
S (%)
Cu (%)
N (%)
Deoxidation
S355JR
≤0.24
≤0.55
≤1.60
≤0.035
≤0.035
≤0.55
≤0.012
Rimmed steel not allowed
S355J0
≤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 (≥ N/mm²)
Thickness (mm)
d≤16
16< d ≤40
40< d ≤63
63< d ≤80
80< d ≤100
100< d ≤150
150< d ≤200
200< d ≤250
S355 Grades
355
345
335
325
315
295
285
275
Tensile Strength (≥ N/mm²)
Thickness (mm)
d<3
3 ≤ d ≤ 100
100 < d ≤ 250
S355JR
510-680
470-630
450-600
Elongation (≥%)
Thickness (mm)
3≤d≤40
40< d ≤63
63< d ≤100
100< d ≤150
150< d ≤250
S355JR
22
21
20
18
17
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...