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Shandong Heyixin Metal Materials Co., Ltd

  • China,Liaocheng ,Shandong
  • Verified Supplier
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China Q345B Q345C Q345D Low Alloy High Strength Carbon Steel Plate Hot Rolled 3mm
China Q345B Q345C Q345D Low Alloy High Strength Carbon Steel Plate Hot Rolled 3mm

  1. China Q345B Q345C Q345D Low Alloy High Strength Carbon Steel Plate Hot Rolled 3mm

Q345B Q345C Q345D Low Alloy High Strength Carbon Steel Plate Hot Rolled 3mm

  1. MOQ: 5 Tons
  2. Price: USD 550-720 / Ton
  3. Get Latest Price
Application Bridges, High-Rise Buildings, Offshore Platforms, Heavy Structural Engineering
Length 6000mm - 18000mm
Yield Strength ≥345 MPa (Q345B at ≤16mm)
Grade Q345B / Q345C / Q345D (Equivalent: S355JR/J0/J2, A572 Gr50)
Impact Temperature Q345B: +20°C, Q345C: 0°C, Q345D: -20°C (≥34J)
Thickness 3mm - 300mm
Standard GB/T 1591, EN 10025-2, ASTM A572
Delivery Time 10-20 working days after order confirmation
Packaging Details Shot blasted SA2.5 surface, steel strip bundled, export wooden pallet, primer coating optional
Tensile Strength 470 - 630 MPa
Width 1500mm - 4500mm
Supply Ability 15000 Tons per Month
Payment Terms T/T, L/C at sight, D/P
Brand Name Baosteel
Place of Origin Shanghai, China
Model Number Q345B-LA-HR
Certification ISO 9001:2015, GB/T 1591, EN 10025 S355JR Equivalent, CE Marking

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  1. Product Details
  2. Company Details

Product Specification

Application Bridges, High-Rise Buildings, Offshore Platforms, Heavy Structural Engineering Length 6000mm - 18000mm
Yield Strength ≥345 MPa (Q345B at ≤16mm) Grade Q345B / Q345C / Q345D (Equivalent: S355JR/J0/J2, A572 Gr50)
Impact Temperature Q345B: +20°C, Q345C: 0°C, Q345D: -20°C (≥34J) Thickness 3mm - 300mm
Standard GB/T 1591, EN 10025-2, ASTM A572 Delivery Time 10-20 working days after order confirmation
Packaging Details Shot blasted SA2.5 surface, steel strip bundled, export wooden pallet, primer coating optional Tensile Strength 470 - 630 MPa
Width 1500mm - 4500mm Supply Ability 15000 Tons per Month
Payment Terms T/T, L/C at sight, D/P Brand Name Baosteel
Place of Origin Shanghai, China Model Number Q345B-LA-HR
Certification ISO 9001:2015, GB/T 1591, EN 10025 S355JR Equivalent, CE Marking
High Light Q345B carbon steel plate for bridge constructionhot rolled low alloy steel platehigh strength carbon steel plate 3mm-300mm

Q345B/C/D Low Alloy High Strength Structural Steel Plate

Our Q345B/C/D low alloy high strength structural steel plate is the Chinese national standard equivalent to EN S355JR/J0/J2 and ASTM A572 Grade 50, designed for demanding structural applications where weight savings and high load-bearing capacity are critical. With yield strength ≥345 MPa — 38% higher than standard A36 — Q345 allows thinner, lighter structures without compromising safety. Available in three impact-tested grades (B: +20°C, C: 0°C, D: -20°C) from 3mm to 300mm, this product is specified in Middle Eastern mega-bridge projects, Southeast Asian high-rise developments, and African infrastructure programs.

Key Features

  • 38% Stronger than A36: Yield strength ≥345 MPa enables material down-gauging, reducing structural weight and foundation costs while maintaining safety margins
  • Three Impact Grades: Q345B (+20°C), Q345C (0°C), and Q345D (-20°C) with guaranteed Charpy impact energy ≥34J for applications in diverse climate zones
  • Microalloyed Design: Small additions of Nb, V, Ti refine grain structure for improved strength, toughness, and weldability compared to plain carbon steel
  • Excellent Weldability: Low carbon equivalent (CEV ≤0.45%) allows welding with standard procedures and minimal preheat requirements
  • Global Equivalents: Direct substitution for S355JR/J0/J2 (EN 10025), A572 Gr50 (ASTM), SM490A (JIS), ensuring acceptance across international projects

Technical Specifications

GradeQ345B / Q345C / Q345D
Equivalent StandardsEN S355JR/J0/J2, ASTM A572 Gr50, JIS SM490A
Thickness3mm - 300mm
Width1500mm - 4500mm
Length6000mm - 18000mm (custom longer available)
Yield Strength≥345 MPa (thickness ≤16mm)
Tensile Strength470 - 630 MPa
Impact Energy≥34J (Q345B +20°C, Q345C 0°C, Q345D -20°C)

Target Markets & Applications

  • Middle East: Highway and railway bridge main girders, stadium roof trusses, mega-mall structural framing
  • Southeast Asia: High-rise building core columns and beams, port crane structures, industrial plant steelwork
  • Africa: Dam gate structures, mining plant heavy steelwork, long-span roof trusses for airport terminals
  • Offshore platform topside modules, wind turbine tower flanges, heavy-lift crane booms

Packaging & Delivery

Shot blasted to SA2.5 cleanliness with shop primer coating available on request. Plates bundled by size with steel strapping on heavy-duty wooden or steel pallets. MTC EN 10204 3.1 and CE marking documentation provided. Custom cut-to-size by plasma/oxy-fuel. FOB Shanghai/Tianjin, CIF to Middle East, Southeast Asia, and Africa.

Company Details

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 from Quality China Factory
  • Business Type:

    Manufacturer,Distributor/Wholesaler,Agent,Importer,Exporter,Trading Company,Seller,Other

  • Year Established:

    2006

  • Total Annual:

    52000000-98000000

  • Employee Number:

    50~100

  • Ecer Certification:

    Verified Supplier

Shandong Heyixin Metal Material Co., Ltd. is located in Liaocheng City, Shandong Province, the beautiful Jiangbei Water City, adjacent to Tianjin and Qingdao, with convenient transportation. It has been focusing on the manufacture and distribution of metal products for many years. Our main products ... Shandong Heyixin Metal Material Co., Ltd. is located in Liaocheng City, Shandong Province, the beautiful Jiangbei Water City, adjacent to Tianjin and Qingdao, with convenient transportation. It has been focusing on the manufacture and distribution of metal products for many years. Our main products ...

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  • Shandong Heyixin Metal Materials Co., Ltd
  • Dadonggang, East Head of Liaohe Road, Liaocheng Economic and Technological Development Zone, Shandong Province
  • https://www.hrccoil.com/

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