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Help CenterASTM A36 Carbon Steel Plate 6mm 10mm 20mm Thick Hot Rolled Steel Sheet Q235B S235JR S355JR
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Hemaokang Steel (Shandong) Co., Ltd., established in 2025, is a reliable supplier of high-quality carbon steel plates. With an annual export value reaching US$50 million to US$100 million and a dedicated team of 51–100 employees, we serve global markets including North America, South America, Europe, Southeast Asia, Africa, and Oceania. Our ASTM A36 Carbon Steel Plate in thicknesses of 6mm, 10mm, and 20mm (hot rolled) is a versatile solution for structural and industrial applications. Backed by ISO9001 certification, we ensure consistent quality, competitive pricing, and timely delivery worldwide.
This product is also available in equivalent grades such as Q235B, S235JR, and S355JR, offering flexibility for different engineering standards. Whether you need plates for building frames, bridges, heavy machinery, or shipbuilding, our hot rolled steel sheets provide excellent weldability, machinability, and strength. Below we detail the key features, technical specifications, and benefits that make this steel plate a top choice for B2B buyers.
Key Features & Benefits
- Superior Strength & Durability: ASTM A36 grade offers a minimum yield strength of 250 MPa, suitable for load-bearing structures. The hot rolled process ensures uniform mechanical properties.
- Excellent Weldability: Low carbon content (≤0.26%) allows easy welding without preheating, reducing fabrication time and cost.
- Multiple Thickness Options: Available in 6mm, 10mm, 20mm (and other thicknesses upon request) to meet diverse project requirements.
- Wide Application Range: Ideal for construction, bridges, heavy machinery, transmission towers, and general fabrication.
- Cost-Effective: Compared to alloy steels, A36 offers a balance of performance and affordability, making it a preferred material for budget-conscious projects.
- Global Compliance: Manufactured according to ASTM A36 and EN10025 standards, with equivalents Q235B (GB), S235JR, and S355JR (EN) available.
- Surface Finish: Hot rolled black surface, ready for further processing such as shot blasting, painting, or galvanizing.
- Customizable Dimensions: Widths from 1500mm to 3000mm and lengths up to 12000mm, with custom cutting services available.
Technical Specifications
| Property | Value |
| Grade | ASTM A36 / Q235B / S235JR / S355JR |
| Thickness | 6mm, 10mm, 20mm (±0.5mm tolerance) |
| Width | 1500mm – 3000mm (customizable) |
| Length | 6000mm – 12000mm (customizable) |
| Yield Strength (min) | 250 MPa (A36), 235 MPa (Q235B), 235-355 MPa (S235JR/S355JR) |
| Tensile Strength | 400-550 MPa (A36) |
| Elongation (min) | 20% (in 200mm) |
| Surface | Hot rolled, black (oxidation layer) |
| Certification | ISO9001, Mill Test Certificate provided |
Why Choose Hemaokang Steel?
As a newly established company with strong export capabilities, we combine modern production facilities with experienced personnel. Our ISO9001 quality management system ensures every plate is inspected and tested before shipment. We have a proven track record of supplying steel to customers in North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and Western Europe. Our annual export volume of US$50–100 million reflects the trust our global partners place in us.
We offer flexible ordering options: small trial orders (MOQ negotiable) and large bulk shipments. Our logistics team coordinates sea freight, rail, or truck delivery to major ports worldwide. With a 51–100 person workforce, we can handle quick turnaround times and provide responsive customer service. Contact us today for a quote or to request a mill test certificate.
Frequently Asked Questions (FAQ)
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Q: What is the difference between ASTM A36 and Q235B?
A: ASTM A36 is a US standard, while Q235B is a Chinese equivalent (GB/T 700). Both have similar chemical composition and mechanical properties. Q235B has slightly lower yield strength (235 MPa) vs A36 (250 MPa). For most structural applications, they are interchangeable. We also offer S235JR and S355JR as European equivalents. -
Q: Can you supply plates with thickness other than 6mm, 10mm, 20mm?
A: Yes, we can customize thicknesses from 3mm to 100mm (or more) based on your requirements. Please contact us with your specific dimensions. -
Q: Do you provide a Mill Test Certificate (MTC)?
A: Absolutely. Each shipment is accompanied by a Mill Test Certificate that verifies chemical composition and mechanical properties, ensuring full traceability and compliance with ASTM A36 or the ordered grade. -
Q: What is the typical lead time for an order?
A: For standard thicknesses (6mm, 10mm, 20mm), lead time is approximately 7–15 days after order confirmation, depending on quantity. Custom sizes may require 15–25 days. We can expedite urgent orders subject to stock availability. -
Q: Are these plates suitable for welding and machining?
A: Yes, ASTM A36 steel has excellent weldability due to its low carbon content. It can be welded using standard processes (MIG, TIG, arc) without preheating. It also machines well with proper tooling. For thicker plates, post-weld heat treatment may be optional. -
Q: What surface treatment options are available?
A: The standard product is hot rolled black surface. We can also provide shot blasting, painting, or galvanizing (HDG) as value-added services. Please inquire about additional costs. -
Q: How do you ensure product quality?
A: Our factory is ISO9001 certified. We perform chemical analysis, tensile testing, and dimensional inspection on each batch. Third-party inspection (e.g., SGS, BV) is also available upon request at buyer's cost. -
Q: What is the minimum order quantity (MOQ)?
A: For standard thicknesses, MOQ is typically 5 tons per size. For trial orders, we can accept smaller quantities—please discuss with our sales team.
Ready to place an order or request a sample? Contact Hemaokang Steel (Shandong) Co., Ltd. today. Our team is ready to provide competitive pricing, technical support, and reliable delivery. Let us be your trusted partner for carbon steel plate solutions.
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