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China factory - JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

  • China,Wuxi ,Jiangsu
  • Verified Supplier
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  3. S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30
China S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30
China S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30

  1. China S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30
  2. China S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30
  3. China S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30
  4. China S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30
  5. China S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30
  6. China S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30

S355JR Carbon Steel Seamless Square Tube with Black Surface Treatment in 30*30

  1. MOQ： 50 Tons
  2. Price： US $650-1,250 / Ton
  3. Get Latest Price
Section Shape Square
Size Range 30*30-500*500
Material Grade S355JR, S275JR, S355J0
Thickness Range 1.2mm-30.0mm
Yield Strength 355 N/mm² (≤16mm)
Tensile Strength 510-680 N/mm²
Elongation 22% (3≤d≤40mm)
Chemical Composition C ≤0.24%
Chemical Composition Si ≤0.55%
Chemical Composition Mn ≤1.60%
Chemical Composition P ≤0.035%
Chemical Composition S ≤0.035%
Surface Treatment Black, galvanized or painted
Production Capacity 10,000MT/month
MOQ 10 Tons per size

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  1. Product Details
  2. Company Details

Product Specification

Section Shape Square Size Range 30*30-500*500
Material Grade S355JR, S275JR, S355J0 Thickness Range 1.2mm-30.0mm
Yield Strength 355 N/mm² (≤16mm) Tensile Strength 510-680 N/mm²
Elongation 22% (3≤d≤40mm) Chemical Composition C ≤0.24%
Chemical Composition Si ≤0.55% Chemical Composition Mn ≤1.60%
Chemical Composition P ≤0.035% Chemical Composition S ≤0.035%
Surface Treatment Black, galvanized or painted Production Capacity 10,000MT/month
MOQ 10 Tons per size
High Light S355JR Square Steel Tube ，Black Surface Treatment Seamless Square Tube ，30*30-500*500 Carbon Steel Square Tube
Steel Square Tube S355JR S275JR S355J0 Carbon Steel Seamless Square Tube
High-quality carbon steel seamless square tubes available in various grades including S355JR, S275JR, and S355J0, designed for structural applications requiring superior strength and durability.
Product Specifications
Available Products & Dimensions
Product Type Size Range Thickness Length
Round Pipe OD10mm - 1000mm 4mm - 30mm Custom lengths available
Square Pipe 10mm×10mm - 1000mm×1000mm 1.2mm - 30.0mm Custom lengths
Rectangle Pipe 20mm×40mm - 400mm×700mm 1.2mm - 30.0mm Custom lengths
L/T/Z Window Section 28mm/38mm 0.5mm - 1.5mm Custom lengths
Additional Product Details
  • Materials: SS400, S235JR, S275JR, S355JR, 1020, 1045, 4140, etc.
  • Surface Treatment: Black, galvanized, or painted
  • 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
  • Minimum Order Quantity: 10 Tons per size
  • Production Capacity: 10,000MT per month
Applications
Widely used in structural applications, motorbike and automobile manufacturing, ornamental uses, medical equipment, sport equipment, and home furniture.
EN 10025 S355 Steel Grades
S355 steel is a European standard structural steel grade according to EN 10025-2:2004, offering superior properties compared to S235 and S275 steels in yield strength and tensile strength.
S355 Steel Grade Designations
  • S355JR (1.0045): Minimum 27J impact energy at room temperature (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
Technical Data Sheets
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
Mechanical Properties - Tensile Strength (≥ N/mm²)
Thickness (mm) d<3 3 ≤ d ≤ 100 100 < d ≤ 250
S355JR 510-680 470-630 450-600
S355J0/J2/K2 510-680 470-630 450-600
Mechanical Properties - Elongation (≥%)
Thickness (mm) 3≤d≤40 40< d ≤63 63< d ≤100 100< d ≤150 150< d ≤250
S355JR 22 21 20 18 17
S355J0/J2/K2 20 19 18 18 17
Product Gallery
Steel square tube product展示 Steel tube manufacturing process Carbon steel seamless tubes inventory Steel tube quality inspection Steel tube packaging and storage Steel tube applications in construction
Company Overview
We are a comprehensive steel pipe enterprise integrating production, processing, and sales. Our main business includes steel tubes, square tubes, seamless square tubes, thick wall square tubes, cold drawn square tubes, and various specialized steel tube products.
Product Range
We offer a complete range of square tube and rectangular tube specifications from 20×20mm to 800×800mm square tubes and 20×30mm to 400×800mm rectangular tubes, with thickness ranging from 0.6mm to 28mm, totaling over 2,800 different specifications.
Manufacturing Partnerships
We maintain excellent cooperative relationships with major steel pipe factories including Tianjin Seamless Steel Pipe Factory, Baotou Steel Pipe Factory, Chengdu Steel Pipe Factory, Wuxi Steel Pipe Factory, and Baosteel Steel Pipe Factory.
Applications
Our products serve various industries including steel structures, large venues, exhibition centers, lifting machinery, shipbuilding, storage shelves, decoration, transportation facilities, airport construction, railway vehicles, bridge support, mine support, and many other industrial applications.
Company facilities and manufacturing capabilities
Company Advantages
Competitive Prices
We maintain strong sales foundations and financial strength with diversified operational modes, establishing strategic cooperative partnerships with steel manufacturers to ensure competitive pricing and market leadership.
Quality Assurance
Professional quality control from procurement to sales, with comprehensive quality audits and continuous tracking of steel mill quality to ensure reliable product performance.
Sincere Service
24-hour distribution service with multiple transportation options including automobile, railway, and ship. Complete steel product portfolio with simplified ordering processes via telephone, telex, and internet platforms.

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...

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Get in touch with us

  • Reach Us
  • JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
  • No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
  • https://www.stainless-strips.com/

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