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  • JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
    Raian Ionescu
    Material quality very good. we have cooperate more than 10 Years. They trade lots kinds of steel material. All material quality good. They duty for all material quality. We are planing continue cooperate with them in the future
Contact Person : Gao Ben
Phone Number : 18068357371
Whatsapp : +8618068357371

S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes

  • S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes
  • S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes
  • S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes
  • S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes
  • S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes
  • S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes
  • S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes
Minimum Order Quantity 50 Tons
Price US $650-1,250 / Ton
Product Details
Model NO. S355JR S355J0 S355J2 Surface Treatment Black
Section Shape Square Specification 30*30-300*300
Size Range 10mm*10mm - 1000mm*1000mm Thickness Range 1.2mm - 30.0mm
Material Q195, Q215, Q235, Q345 Yield Strength 355 N/mm² (≤16mm)
Tensile Strength 510-680 N/mm² (d<3mm) Elongation 22% (3≤d≤40mm)
Carbon Content ≤0.24% (S355JR) Manganese Content ≤1.60%
Silicon Content ≤0.55% Phosphorus Content ≤0.035% (S355JR)
Sulfur Content ≤0.035% (S355JR)
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S355JR S355J0 S355J2 Square Steel Pipe

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30*30-300*300 Square Tube

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Black Surface Hollow Section
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Product Description
Carbon S355 Square Steel Pipes and Tubes
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
S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes 0 S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes 1 S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes 2 S355JR S355J0 S355J2 Square Steel Pipe and Square Tube with Black Surface in 30*30-300*300 Sizes 3
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ASTM A-500 Square Tube

100 X 50 X T3.0mm Square Pipe

Black Surface Treatment Steel Tube