A Guide to Buying Steel from China: What You Need to Know Before Ordering
Buying steel from China is not simply about finding the lowest price per ton.
Why do quotations from different suppliers vary so much? Why does the same steel grade sometimes have different requirements? Why do processing fees, inspection costs, or thickness tolerances become issues after the order is placed?
A clear specification is the starting point for a successful steel purchase. This guide covers what buyers need to know before ordering steel from China.
1. Define Your Steel Requirements Before Asking for a Quote
1.1 Steel Grade and Standard
Don't just tell the supplier: "I need Q355 steel."
Provide the full specification:
- ✔ Steel grade — Q355D, S355JR, SA516 Grade 70, etc.
- ✔ Standard — GB/T, ASTM, EN, ASME, etc.
- ✔ Product type — plate, sheet, coil
- ✔ Application — pressure vessel, structural, wear-resistant
⚠️ Important: The same or similar steel grades under different standards are not automatically identical. Q355D (GB) and S355JR (EN) are similar but not the same.
1.2 Steel Dimensions
Specify:
- ✔ Thickness (mm)
- ✔ Width (mm)
- ✔ Length (mm)
- ✔ Quantity and number of pieces
📌 Example: "20 tons of Q355D" is not a complete inquiry. A better inquiry: Q355D, 20mm × 2000mm × 6000mm, 20 MT.
1.3 Quantity and Weight
- ✔ Total quantity in tons or number of plates
- ✔ Theoretical weight vs actual weight — confirm which method applies
2. Understand Steel Delivery Conditions
The same steel grade can be supplied in different delivery conditions. Each affects mechanical properties, weldability, and price.
- ✔ Hot Rolled (AR) — no additional heat treatment
- ✔ Normalized (N) — heat treated for uniformity and toughness
- ✔ Normalized Rolled (NR) — controlled rolling to achieve normalized properties
- ✔ TMCP — controlled rolling with accelerated cooling
- ✔ Quenched and Tempered (QT) — highest strength
💡 Key point: Always confirm the required delivery condition before placing an order. A cheaper price may reflect a different condition that doesn't meet your project requirements.
3. Check Thickness Tolerance Carefully
Nominal thickness ≠ actual measured thickness.
Why thickness tolerance matters:
- ✔ Fabrication and welding fit-up
- ✔ Weight calculation and total cost
- ✔ Structural and pressure vessel design
⚠️ What to do: If your project has strict dimensional requirements, specify the tolerance in the RFQ — not after the order is placed.
4. Confirm Inspection and Certification Requirements
Documentation is as important as the steel itself. Common requirements include:
- ✔ Mill Test Certificate (MTC) — confirms grade and properties
- ✔ EN 10204 3.1 or 3.2 — mill-certified or third-party inspected
- ✔ Chemical composition — C, Mn, Si, P, S, etc.
- ✔ Mechanical properties — yield, tensile, elongation, impact
- ✔ Ultrasonic Testing (UT) — for internal quality
- ✔ HIC testing — for sour service applications
📌 Note: Not every steel plate requires every test. The requirement depends on the application, standard, and project specification.
5. Third-Party Inspection for Steel Orders
Third-party inspection provides independent verification of steel quality and compliance.
- ✔ SGS
- ✔ BV (Bureau Veritas)
- ✔ DNV
- ✔ TÜV
- ✔ RINA
💡 When to consider third-party inspection: Large orders, first-time cooperation, pressure vessel projects, marine projects, critical structural applications. Inspection requirements should be agreed before production.
6. Steel Processing Requirements You Should Confirm
Common steel plate processing services:
- ✔ Cut-to-size (four-side cutting)
- ✔ Laser cutting, plasma cutting, flame cutting
- ✔ Beveling and drilling
- ✔ Edge preparation
⚠️ Example: If you need Q690E parts instead of full steel plates, simply providing the total weight is usually not enough. You need to provide: drawing + thickness + dimensions + quantity + tolerance + cutting method.
7. Compare Steel Suppliers Based on Total Cost
Don't compare only USD/MT. Compare the total purchasing cost:
- ✔ Steel price per ton
- ✔ Processing cost (cutting, beveling, drilling)
- ✔ Packing and marking
- ✔ Inland transportation to port
- ✔ Port charges and documentation
- ✔ Ocean freight
- ✔ Inspection fees
- ✔ Other charges
💡 Example: Supplier A: $550/MT. Supplier B: $565/MT. B includes processing, A does not. A is not necessarily cheaper.
8. Understand Incoterms When Buying Steel from China
- ✔ EXW (Ex Works) — buyer arranges pickup and shipping
- ✔ FOB (Free on Board) — supplier delivers to port, buyer arranges freight
- ✔ CFR (Cost and Freight) — supplier pays freight to destination port
- ✔ CIF (Cost, Insurance, Freight) — supplier pays freight and insurance
⚠️ Important: Always compare quotations under the same Incoterm. Otherwise, a quote that looks cheaper may end up costing more.
9. Payment Terms and Order Security
Common payment methods:
- ✔ T/T (Telegraphic Transfer) — common for steel exports
- ✔ L/C at sight — more secure, higher cost
💡 What to confirm: Payment percentage, balance payment timing, production schedule, shipment schedule, and required shipping documents. For first-time cooperation, payment security and supplier reliability are as important as price.
10. How to Evaluate a Reliable Chinese Steel Supplier
Check 1: Company Background
- ✔ Manufacturer or trading company?
- ✔ Years in business
- ✔ Main products and export experience
Check 2: Product Capability
- ✔ Can they supply the required grade, thickness, and quantity?
- ✔ Can they provide the required certification?
Check 3: Stock or Mill Production
- ✔ Is the material in stock?
- ✔ Mill production or custom order?
Check 4: Previous Export Experience
- ✔ Has the supplier exported to your region before?
- ✔ Are they familiar with the required documentation?
11. Common Mistakes When Buying Steel from China
❌ Mistake 1: Only asking for "Best price for Q355?"
Always specify the grade, standard, thickness, and delivery condition.
❌ Mistake 2: Not confirming the standard
GB, ASTM, EN, and ASME are different. Confirm which one applies.
❌ Mistake 3: Ignoring thickness tolerance
Nominal thickness is not the same as actual thickness. Confirm the tolerance.
❌ Mistake 4: Requesting third-party inspection after production starts
Inspection requirements should be agreed before production.
❌ Mistake 5: Comparing only steel price per ton
Compare total cost — including processing, shipping, and inspection.
❌ Mistake 6: Not confirming Incoterms
FOB, CIF, and CFR are different. Compare quotes under the same Incoterm.
❌ Mistake 7: Not providing drawings for processed parts
For cutting or machining, provide drawings with dimensions and tolerances.
❌ Mistake 8: Not confirming certificate requirements
Specify EN 10204 3.1, 3.2, or other requirements before ordering.
12. A Practical RFQ Checklist for Buying Steel from China
13. Frequently Asked Questions
❓ How do I find a reliable steel supplier in China?
Check the supplier's company background, product capability, export experience, and references. Ask for previous export documents and verify their ability to provide the required certification and testing.
❓ What information should I provide when requesting a steel quotation from China?
Provide the steel grade, standard, thickness, width, length, quantity, delivery condition, thickness tolerance, certificate requirement, testing requirements, processing requirements, Incoterm, destination port, and payment terms.
❓ Why do quotations from different Chinese steel suppliers vary so much?
Differences may come from steel grade, standard, thickness tolerance, delivery condition, certification, testing, processing, packing, shipping terms, and supplier margin. Always compare the full specification, not just the price per ton.
❓ Should I use FOB or CIF when buying steel from China?
FOB gives you more control over shipping and insurance but requires arranging logistics. CIF includes shipping and insurance, which is simpler but may be more expensive. Choose based on your shipping experience and the reliability of the supplier's freight partners.
❓ What is the difference between a steel mill and a steel trading company in China?
A steel mill manufactures steel directly. A trading company buys from multiple mills and resells. Trading companies often offer more flexible quantities and faster delivery from stock, while mills may have lower prices but larger MOQs.
❓ Do I need third-party inspection for steel plates from China?
For large orders, first-time cooperation, pressure vessel projects, marine projects, or critical structural applications, third-party inspection is recommended. It provides independent verification of quality and compliance.
❓ How long does it take to ship steel plates from China?
Typical lead times: stock plates: 7–15 days; mill production: 20–40 days; sea freight to major ports: 20–40 days depending on destination. Total time from order to arrival is usually 40–80 days. Confirm with your supplier for your specific order.
14. Final Thoughts
Buying steel from China can be cost-effective when the requirements are clear from the beginning.
A good steel purchase is not simply about getting the lowest price. It is about making sure the material, specification, quality, delivery, and total cost all meet your project requirements.
💡 Our view: If you are sourcing carbon steel plates, structural steel, pressure vessel steel, high-strength steel, or wear-resistant steel from China, CEHE STEEL can help you evaluate specifications and prepare a quotation based on your project requirements.
📚 Further Reading & Related Content
Sourcing Steel from China? We Can Help.
CEHE STEEL supplies carbon steel plates for pressure vessels, structural projects, marine applications, and industrial manufacturing. Send us your specifications — we'll provide a quotation with full MTC documentation.