Q355 Steel Plate | Standard & Custom Sizes Available

Q355 Steel Plate

CJM Steel supplies Q355 steel plate for structural and engineering applications, with Q355B, Q355C, Q355D and Q355E grades available. Standard and custom dimensions, cut-to-size service, quality documentation and export delivery can be arranged according to project requirements.

Q355 Steel Plate Specifications

Item	Specification
Product	Q355 Steel Plate
Standard	GB/T 1591
Grades	Q355B, Q355C, Q355D, Q355E
Thickness	Commonly 6–100 mm, customized thickness available
Width	Commonly 1500–2500 mm, customized width available
Length	Commonly 6000–12000 mm, customized length available
Surface	Mill surface / as supplied
Edge	Mill edge or cut edge
Supply Condition	According to grade and order requirements
Processing	Cut-to-size and other processing on request
Inspection	Visual and dimensional inspection; third-party inspection can be coordinated
Documentation	MTC and required shipping documents
Availability	Stock and mill-order supply
MOQ	No fixed MOQ for available stock

Actual dimensions and availability depend on the selected grade, thickness and quantity. Send us your required size and quantity to check current availability.

Q355 Steel Plate Applications

Q355 steel plate is commonly purchased for structural and engineering projects where higher-strength structural plate is required.

Typical applications include:

• Steel structures
• Building frames and supports
• Bridges and infrastructure
• Industrial platforms
• Machinery and equipment structures
• Storage and handling equipment
• Welded structural components
• General engineering fabrication

The required Q355 grade, thickness and delivery condition should be confirmed according to the project’s technical specification.

Chemical Composition

Grade	C, max.	Si, max.	Mn	P, max.	S, max.
Q355B	0.20%	0.50%	1.00–1.70%	0.035%	0.035%
Q355C	0.20%	0.50%	1.00–1.70%	0.030%	0.030%
Q355D	0.20%	0.50%	1.00–1.70%	0.030%	0.030%
Q355E	0.20%	0.50%	1.00–1.70%	0.025%	0.025%

Actual requirements may vary with product thickness and the applicable standard edition. The final chemical composition is confirmed by the MTC supplied with the material.

Mechanical Properties

Grade	Yield Strength	Tensile Strength	Impact Test
Q355B	≥355 MPa	470–630 MPa	20°C
Q355C	≥355 MPa	470–630 MPa	0°C
Q355D	≥355 MPa	470–630 MPa	−20°C
Q355E	≥355 MPa	470–630 MPa	−40°C

Mechanical properties can vary according to plate thickness and the applicable specification. Test results for the supplied material are provided on the MTC.

For detailed information about Q355 properties and equivalent grades, see Q355 Steel Properties.

Q355 Steel Plate Processing

Q355 steel plate can be supplied as standard plate or cut to the dimensions required for fabrication.

Available services include:

• Cut-to-size
• Plate leveling
• Edge cutting or beveling
• Other processing according to requirements

Send us your dimensions or cutting list when requesting a quotation so we can confirm the available service.

Q355 Steel Plate Quality Control

As a steel trading and supply company, CJM Steel focuses on material verification, supplier coordination and shipment inspection.

Before shipment, we can check the ordered material against the agreed specifications, including:

• Steel grade
• Plate thickness and dimensions
• Quantity and weight
• Surface condition
• Heat number and product identification
• Mill Test Certificate (MTC)

Q355 Steel Plate Packaging and Delivery

Q355 steel plates are prepared for transportation according to the shipment method and customer requirements.

Typical export packing includes:

• Steel straps for plate bundles
• Product and heat-number identification
• Protective packing where required
• Seaworthy packing for export shipments

We can arrange container or bulk shipment depending on the order quantity, plate dimensions and destination.

Request a Q355 Steel Plate Quote

Looking for Q355 steel plate from China for a construction, engineering or fabrication project?

Send us your required grade, dimensions, quantity and delivery destination. We can check stock or sourcing options and provide a quotation with the available documentation and delivery terms.

FAQ

What Q355 steel plate grades do you supply?

We supply Q355B, Q355C, Q355D and Q355E steel plates according to project requirements and availability.

What sizes of Q355 steel plate are available?

Common trade sizes include plates around 1500–2500 mm in width and 6000–12000 mm in length, with thicknesses commonly available from 6–100 mm. Custom dimensions can also be arranged.

Can I buy Q355 steel plate from stock?

Yes. Stock supply is available for selected Q355 grades and sizes. Availability should be confirmed based on the required specification and quantity.

Do you have a minimum order quantity for Q355 steel plate?

There is no fixed MOQ for available stock. The practical order quantity depends on the specific grade, dimensions, stock condition and shipping method.

Can you cut Q355 steel plate to size?

Yes. Cut-to-size service can be arranged according to your required dimensions or cutting list.

Can you provide an MTC for Q355 steel plate?

Yes. MTC can be provided according to the order requirements, with material and test information corresponding to the supplied plates.

Can you arrange third-party inspection?

Yes. Customer-appointed or independent third-party inspection can be coordinated when required.

How can I get a Q355 steel plate quotation?

Send us the grade, thickness, width, length, quantity, processing requirements and destination. We will check the available supply option and provide a quotation.

Q: What is your company’s main products/services?

A: We are a professional manufacturer for Carbon Steel, Alloy Steel and Profile products. We have the experience of steel business for more than 10 years and our products are exported to Mid East,South America,Southeast Asia,Africa,South and East Asia etc.

Q: Can I go to your factory for a visit?

A: Of course, we welcome customers from all over the world to visit our factory.

Q: What are your terms of payment?

A: 30% T/T deposite and 70% balance before shipment.

Q: What is your delivery time?

A: For stocks,we could transport the goods to loading port within 7 days after we received the deposit; For production,it usually takes about 15-30 days after receiving the deposit.

Q: Do you provide samples? Are they free or paid?

A: Samples are available for free,but the courier freight will be covered by customer account.

Q: Do you accept the third party inspection?

A:Yes, we fully accept ‌third-party inspections.

Q: Why should I buy from you not from other suppliers?

A: Integrating the superior resources of China’s steel industry, we provide customers with high-quality steel products at preferential prices, and can ensure that the goods are delivered to customers in a timely manner.

Q:How can you guarantee quality?

A: Always a pre-production sample before mass production;Always 100% inspected before shipment