Name: Q355B / Q355C / Q355D / Q355NH Carbon Steel Plate
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Q355B / Q355C / Q355D / Q355NH Carbon Steel Plate

Q355 series low alloy high strength steel plate includes Q355B, Q355C, Q355D and normalized weather-resistant Q355NH. With 355MPa yield strength, it outperforms ordinary mild steel for heavy load structures, widely adopted for factory buildings, tower cranes and container girders in global heavy industry bulk procurement.

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Product Parameters

Types of carbon steel and their properties

Carbon steel can be classified into three categories according to its carbon content: low-carbon steel (or mild-carbon steel), medium-carbon steel and high-carbon steel . Their carbon content, microstructure and properties compare as follows:

Carbon content (wt.%)	Microstructure	Properties	Examples
Low-carbon steel	< 0.25	Ferrite, pearlite	Low hardness and cost. High ductility, toughness, machinability and weldability
Medium-carbon steel	0.25 – 0.60	Martensite	Low hardenability, medium strength, ductility and toughness
High-carbon steel	0.60 – 1.25	Pearlite	High hardness, strength, low ductility

PRODUCT DETAILS

Product Name	Q355B / Q355C / Q355D / Q355NH Carbon Steel Plate
Standard	GB/T 1591; Equivalent: EN S355JR/S355NLH, ASTM A572 Gr50
Material	Q355B / Q355C / Q355D / Q355NH
Technique	Cold Rolled, Hot Rolled
Common Sizes & Thickness	Thickness range: 4mm–120mm Standard width: 1000/1250/1500mm; length: 6000/12000mm Hot selling gauges: 10mm, 16mm, 20mm, 30mm, 40mm
Surface Treatment	Hot rolled black mill scale, pickled & oiled, shot blasted with anti-rust primer, anti-rust oil sealed for long-sea export shipment.
Temper	Hot rolled as standard; Q355NH delivered in normalized fine grain temper.
Origin	China
HS Code	7209250000
Delivery Time	7-15 days，depends on quantity ordered
After-sales Service	24 hours online
Production Capacity	100000 Tons/Year
Loading Port	Any port in China
Certificates	ISO9001, SGS, RoHS, EN10204 3.1 Mill Test Certificate
Packaging	Standard Sea-worthy Packaging
Processing Service	Bending, Welding, Decoiling, Punching, Cutting
Tolerance	±1%
MOQ	5 tons
Payment Terms	TT, LC,Cash, Paypal, DP, DA,Western Union or Others.
Terms Of Trade	EXW,FOB, CRF, CIF ,CNF or others
Exported to	Southeast Asia (Vietnam, Thailand, Indonesia), Middle East (Saudi Arabia, UAE), Eastern Europe construction & heavy equipment manufacturers, Australia logistics container factories.
Core Strengths	355MPa minimum yield strength, higher bearing capacity than Q235 series for heavy loads Graded low-temperature impact resistance: B(20℃), C(0℃), D(-20℃); Q355NH normalized weather-resistant grain structure Outstanding weldability and fatigue resistance for long-term cyclic heavy-load service Optimized manganese micro-alloy formula balances performance and raw material cost Precise flatness tolerance, easy plasma cutting, bending and large component assembly
Application	Industrial factory steel frames, tower crane structural beams, container load-bearing girders, heavy machinery bases, bridge auxiliary supports, outdoor weather-resistant construction components (Q355NH).

If you are looking for professional carbon steel sheet suppliers for long-term business cooperation, do not hesitate to contact hw steel . Here we supplies high quality carbon steel products and more steel metal collection at competitive factory price for you!

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FAQ

1.What kind of customer service do you provide?

We provide comprehensive customer service, including basic design, procurement of supporting facilities, and options for dispatching installation guides.

2.What are the customer evaluations of your company?

We are proud to consistently receive five-star reviews from our customers, which demonstrates our commitment to quality and service.

3.What is your quality inspection process like?

Our strict quality inspection process ensures that every product meets the highest standards of excellence. From raw materials to finished products, every stage is carefully inspected to ensure excellent quality.

4.Do you accept container loading inspection?

Welcome to dispatch inspectors, not only for container loading, but also at any time during production.

5.What is the delivery time?

The delivery time depends on the quantity of orders. Usually, the delivery time to the nearest port in China is 15-30 days after receiving the deposit.

6. How to obtain a project quotation?

You can contact us 24 * 7 via email, phone, WhatsApp, WeChat, etc. You will receive a reply within 4 hours.