Q235 / Q355 Steel Plate Supplier
When you need GB structural steel plate for fabrication, construction, machinery frames, welded structures or project supply, send grade, thickness, width, length, quantity, processing requirement, MTC requirement and destination. We can support Q235, Q355 and other GB carbon / low-alloy structural steel plate grades according to confirmed specification, production feasibility and project requirement.
Q235 and Q355 Steel Plate for Fabrication, Construction and Project Supply
This page focuses on Q235 and Q355 steel plate. Q235 is commonly selected for general structural fabrication and common steel components. Q355 is normally selected when the project requires higher strength than Q235. We can also review other GB structural steel plate grades according to confirmed grade, size, quantity, testing requirement and mill schedule.
GB Carbon and Low-Alloy Structural Steel Plate Supply
If your drawing or purchasing document uses GB grade names, send the exact grade and quality level before quotation. We can review Q235A / B / C / D, Q355B / C / D / E and related GB structural steel plate grades for stock supply, production arrangement, cutting, inspection, packing and export shipment.
- Q235 steel plate for general structural fabrication, brackets, frames and welded components.
- Q355 steel plate for higher-strength structural parts, engineering structures and project steel supply.
- GB steel plate grades can be reviewed according to grade, size, quantity, testing requirement and mill availability.
- MTC, heat number, plate marking, packing photos and loading photos can be discussed according to order requirements.
For Fabrication Factories
You can send cutting drawings, plate size, hole position, beveling details, tolerance requirement and plate marking needs before quotation.
For Contractors and Project Buyers
You can confirm Q235 or Q355 according to load requirement, project drawing, local acceptance and MTC requirement.
For Importers and Distributors
You can request mixed thickness orders, standard plate sizes, export packing, shipping marks and loading records for resale or project supply.
Q235 vs Q355 Steel Plate: How to Choose the Right GB Grade
Q235 and Q355 belong to different purchasing logic. Q235 is a common carbon structural steel choice for general fabrication. Q355 is a low-alloy high-strength structural steel route when the project needs higher strength or specifies Q355 directly.
| Item | Q235 Steel Plate | Q355 Steel Plate | Buyer Selection Logic |
|---|---|---|---|
| Standard System | GB carbon structural steel route. | GB high-strength low-alloy structural steel route. | Confirm the exact GB standard and grade shown on your drawing or purchasing document. |
| Strength Level | 235 MPa yield strength level logic. | 355 MPa yield strength level logic. | Use Q235 for general structures; use Q355 when higher strength is required or specified. |
| Common Grades | Q235A, Q235B, Q235C, Q235D. | Q355B, Q355C, Q355D, Q355E. | Quality level matters, especially when impact temperature or project acceptance is specified. |
| Common Use | General fabrication, brackets, frames, base plates, welded components and common steel parts. | Higher-strength structural fabrication, machinery frames, construction steel structures and load-bearing parts. | Do not select only by price. Confirm design strength, thickness, welding and inspection requirements. |
| Quotation Focus | Size, quantity, cutting, MTC, packing and delivery schedule. | Grade, quality level, strength, testing requirement, MTC and project acceptance. | Send grade, thickness, width, length, quantity, processing requirement and destination for accurate quotation. |
GB Carbon and Low-Alloy Structural Steel Plate Grades We Can Supply or Produce
GB steel plate grades can be reviewed according to project drawings, grade, thickness, width, length, quantity, testing requirement and mill availability. For export orders, please send the exact GB grade, quality level, size, MTC requirement and destination before quotation.
Carbon Structural Steel Plate
For common structural fabrication and general steel parts where carbon structural steel is accepted.
- Q195
- Q215
- Q235
- Q275
Q235 Series
For general structures, brackets, frames, welded parts, base plates and common fabrication use.
- Q235A
- Q235B
- Q235C
- Q235D
Low-Alloy High-Strength Plate
For higher-strength structural parts, engineering structures and project steel requirements.
- Q355
- Q390
- Q420
- Q460
Q355 Series
For load-bearing structures, construction projects, machinery frames and higher-strength fabrication.
- Q355B
- Q355C
- Q355D
- Q355E
Q235 / Q355 Steel Plate Supply Range and RFQ Details
Q235 and Q355 quotation depends on grade, quality level, size, quantity, surface condition, processing method, inspection requirement and destination. Clear RFQ details help reduce repeated communication before quotation.
Supply Range
- GradesQ235A / B / C / D, Q355B / C / D / E and related GB structural steel plate grades
- Thickness1.5mm–400mm, subject to grade, size and production feasibility
- Width1m–2.5m
- Length2.44m–12m
- ConditionHot rolled plate, stock plate, cut-to-size plate or processed plate
- ProcessingCutting, drilling, beveling, surface cleaning, marking, packing and loading support can be discussed
Details You Should Send
- GradeQ235B, Q235D, Q355B, Q355D or exact GB grade required by your drawing
- SizeThickness × width × length, tolerance and cut-to-size details if required
- QuantityTotal tons, number of plates, container load or project delivery schedule
- ProcessingCutting, drilling, beveling, marking or surface cleaning requirement
- DocumentsMTC, heat number, inspection report, packing list and loading photos if required
- DestinationDestination country or port, trade term and expected shipment schedule
Common Applications of Q235 and Q355 Steel Plate
Q235 and Q355 should not be used as one generic material name. Q235 is more suitable for common structural and fabrication use. Q355 is selected when the project requires higher strength or specifies low-alloy high-strength structural steel.
Q235 General Fabrication
You can use Q235 steel plate for brackets, frames, welded components, base plates and common steel parts.
Q235 Distributor Stock
You can request common plate sizes, mixed thickness orders, export packing and loading records for local resale or repeated supply.
Q355 Load-Bearing Structures
You can select Q355 steel plate for construction steel structures, machinery frames and higher-strength structural components.
Q355 Project Steel Supply
You can confirm quality level, impact requirement, MTC, inspection details and delivery schedule for project steel supply.
Q235 / Q355 Plate Inspection, Cutting, Marking and Export Packing
If you need processed plates instead of resale stock, processing details should be confirmed before quotation. Cutting size, hole location, beveling angle, tolerance, plate marking and packing method can affect both cost and delivery schedule.
Q235 Steel Plate Stock
You can quote Q235 for general structural fabrication, brackets, base plates and common welded steel parts.
Q355 Steel Plate Stock
You can quote Q355 when your project requires higher strength or specifies GB low-alloy structural steel.
Thickness and Size Check
You can confirm thickness, width, length, tolerance, surface condition and plate marking before shipment.
Cut-to-Size Processing
You can discuss flame cutting, plasma cutting, laser cutting or fixed-size plate cutting according to your drawing.
Drilling, Beveling and Marking
You can send hole position, beveling requirement, plate marking and drawing details before quotation.
MTC and Heat Number Check
You can align material certificate, heat number, plate marking, grade, size and order details before delivery.
Export Packing and Loading
You can request steel straps, wooden supports, labels, shipping marks, packing photos and loading photos.
Structural Application
You can match Q235 or Q355 with fabrication, construction steel structures, machinery frames or project steel supply.
Common Questions from Q235 / Q355 Steel Plate Buyers
What is the difference between Q235 and Q355 steel plate?
Q235 is commonly used for general carbon structural steel applications, while Q355 is selected when higher strength or low-alloy structural steel is required. The correct grade should follow the project drawing and MTC requirement.
Can Q235 replace ASTM A36, SS400 or S235JR?
Q235 can be compared with A36, SS400 and S235JR in some general structural steel inquiries, but it is not an automatic replacement. Final selection should follow project documents, local standard, MTC and buyer approval.
Can Q355 replace S355 or ASTM A572 Gr.50?
Q355, S355 and ASTM A572 Gr.50 are often compared in higher-strength structural steel inquiries, but they belong to different standard systems. Project approval and document review are required before substitution.
Which GB steel plate grades can you supply or produce?
We can review Q195, Q215, Q235, Q275, Q355, Q390, Q420, Q460 and related GB structural steel plate grades according to confirmed size, quantity, testing requirement and mill availability.
Can you cut Q235 or Q355 steel plate to size?
Cut-to-size processing, drilling, beveling, marking and packing can be discussed according to thickness, drawing, tolerance and order quantity.
Can you provide MTC, heat number and loading photos?
MTC, heat number, plate marking, inspection photos, packing photos and loading photos can be discussed according to order requirements.
Related Carbon Steel Plate and Buyer Support Pages
If your project involves ASTM structural steel plate, carbon steel plate categories, total steel plate supply, quality control or export packing, use the related pages below.
Send Your Q235 / Q355 Steel Plate Inquiry
Send grade, quality level, thickness, width, length, quantity, processing requirement, packing request, MTC requirement and destination details. We will check stock, production feasibility, processing route, document support, packing method and quotation details.
Direct Contact
For Faster Quotation, Please Include
- ✓Grade: Q235B, Q235C, Q235D, Q355B, Q355C, Q355D, Q355E or project-specified GB grade.
- ✓Thickness × width × length, tolerance and quantity.
- ✓Cutting, drilling, beveling, marking or other processing requirements.
- ✓MTC requirement, destination port, packing method and shipment schedule.
Document Support
- MTC
- Heat number
- Plate marking
- Size check
- Cutting check
- Packing list
- Loading photos
- Shipping marks
Steel Inquiry Form
Send this form for Q235, Q355 and related GB structural steel plate inquiries.
