Description
Vertically Integrated Mill & Processing — Hot rolled carbon steel plates from 3mm to 300mm thickness cut, punched, and welded to your engineering drawings under one roof.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | Carbon Steel Plate Hot Rolled |
| Product Type | Steel Plate |
| Steel Grade | Q195-Q345, A53-A369, ST35-ST52, 10#-45#, 16Mn, Grade A, Grade B, Grade C |
| Standard | AISI, ASTM, BS, DIN, GB, JIS |
| Technique | Hot Rolled |
| Width | 600-2000mm |
| Thickness | 3mm-300mm |
| Length | 6-12m |
| Tolerance | ±1% |
| Surface Treatment | Coated, Galvanized |
| Processing Service | Punching, Cutting, Decoiling, Welding, Bending |
| Special Use | Wear Resistant Steel |
| Application | Shipbuilding, Boiler, Container, High-strength structural fabrication, Pressure vessels, Industrial construction |
| MOQ | 25 Tons |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Shipbuilding & Marine | Hull plates, deck plating, bulkhead stiffeners |
| Pressure Equipment | Boiler shells, pressure vessel end caps, heat exchanger plates |
| Industrial Construction | Factory column base plates, crane runway beams, mezzanine floor grating supports |
| Container Manufacturing | Corner castings, floor cross members, side wall corrugation blanks |
| Infrastructure & EPC | Bridge gusset plates, embedded anchor plates, heavy equipment skid bases |
What Cutting Tolerance Errors Cost on a Fabrication Floor
A five-millimetre drift on bolt-hole plates turns a clean assembly into a full-day gas-cutting rework.
I learned this the hard way on an Indonesian warehouse job — a batch of Q235B plates arrived with bolt patterns offset by several millimetres, forcing the erection crew to re-cut every connection on site. For buyers outsourcing Hot Rolled Carbon Steel Plate Cutting Processing Service Supplier work overseas, the risk is not just dimensional inaccuracy but broken material traceability when the fabricator sources blanks from a third-party mill. [NEED_CITE: structural steel fabrication quality control challenges in international procurement]
Matching Plate Thickness to Structural Load Paths
Hot rolled plates from 3mm to 300mm cover everything from light gauge bracing gussets to heavy column base plates. For primary structural members in EPC projects, Q345 and equivalent grades provide the yield strength needed to resist bending moments without excessive deflection. The Hot Rolled Carbon Steel Plate Cutting Processing Service Supplier capability ensures each plate is CNC-cut to exact geometry before welding, eliminating on-site thermal distortion that occurs when crews modify blanks in the field.
Engineering Compliance Across Global Markets
Plate orders for EU-bound projects must carry CE marking under EN 1090-2, requiring full factory production control documentation and welder qualification records. [NEED_CITE: EN 1090 structural steel execution class requirements] ASTM A36 and A572 grades serve North American specifiers who require mill test reports with Charpy impact data at specified temperatures. The ±1% thickness tolerance holds across the 3mm-300mm range, meeting the dimensional accuracy demanded by precision fabrication shops and third-party inspectors alike.
Steel Grade Selection and Processing Behaviour
The Q-series (Q195 through Q345) follows the Chinese GB standard system where the number indicates minimum yield strength in MPa — Q345 delivers roughly 345 MPa yield, making it the workhorse grade for welded structures. ASTM A53-A369 covers a broad family including A36 for general construction and A572 Grade 50 for higher-strength applications. ST35-ST52 serves European DIN-standard projects. Hot rolling produces a mill scale surface that accepts shop primers readily, while galvanized or coated finishes extend corrosion resistance for marine and chemical plant environments. The 10#-45# carbon series and 16Mn manganese grade respond predictably to CNC plasma and flame cutting without excessive edge hardening when proper parameters are set.
The Hidden Price of Unverified Mill Certificates
Ordering plates without verified heat numbers and chemical composition reports creates downstream liability. [NEED_CITE: material traceability requirements in structural steel codes] Fabricators who weld untested plates risk brittle fracture in cold climates or hydrogen-induced cracking in thick sections. Customs authorities in the EU and Middle East increasingly reject shipments lacking proper EN 1090 or ASTM documentation, stranding cargo at port and delaying project handover.
Why Source from an Integrated Mill-Fabricator
XJY Structure operates under Shandong Xin Jiyuan Special Steel Tube Co., Ltd with its own steel production facility running three rolling lines and stocking over 2,800 raw material specifications. This vertical integration means every Hot Rolled Carbon Steel Plate Cutting Processing Service Supplier order traces back to a single heat of steel — no gaps in the certification chain. The in-house fabrication workshop handles CNC cutting, drilling, bending, and certified welding (AWS/EN qualified welders) under one quality management system. Shop drawing review, material optimization, and complete QC documentation packages including WPS, PQR, weld maps, and coating reports ship with every order. International project experience spans the EU, Middle East, Southeast Asia, and Africa, with proven delivery to general contractors and EPC firms who require a single point of accountability from raw slab to finished component.
Documentation & Compliance
- Mill test certificate documenting Q345B chemical composition and mechanical properties per GB/T 1591, traceable to original heat number
- CE certificate confirming EN 1090-2 EXC2/EXC3 execution class compliance for EU structural steel projects
- ISO 9001 quality management certificate covering the integrated mill-to-fabrication production chain
- SGS or BV third-party inspection report available for pre-shipment dimensional and coating verification
- Material traceability report linking each plate to its heat number, chemical analysis, and rolling schedule
- Full customs documentation package including packing list, bill of lading, and certificate of origin for destination-country clearance
Packaging, Loading & Delivery
- Hot rolled plates bundled with high-tensile steel straps and edge protectors to prevent coating damage during ocean transit
- Galvanized plate surfaces wrapped in waterproof paper and plastic film to preserve zinc layer integrity in humid port environments
- Container loading optimized for 6m-12m plate lengths with timber dunnage separation to avoid surface scratching and facilitate fork-lift unloading
- Custom-cut plates marked with heat number, steel grade, and piece number for rapid identification at the fabrication shop
- FOB, CIF, and DDP shipping terms available with professional oversized cargo lashing and complete export documentation tracking
Getting Your Fabrication Quote Moving
Submit your project drawings in PDF or DWG format along with steel grade requirements, plate dimensions, quantity, and destination port. The engineering team responds within 24 hours with a preliminary assessment covering material procurement, CNC cutting schedules, welding procedures, and coating specifications.
Request Your Hot Rolled Plate Processing Quote
Share your specifications and engineering drawings to receive a detailed quotation with mill test certificate documentation and production timeline.
Contact: Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@xjystructure.com
Address: No.11889, Jingshi West Road, Lulian Group, Jinan City, Shandong Province, China
Frequently Asked Questions
Q: Can you provide steel grade equivalence between GB Q345 and international standards?
A: Q345 corresponds closely to ASTM A572 Grade 50 and EN S355JR in terms of yield strength and chemical composition. We supply cross-reference documentation for EU, North American, and Asian specifiers to ensure your engineering team can approve substitutions with confidence.
Q: What third-party inspection options are available before shipment?
A: SGS and BV inspection teams can attend our facility for pre-shipment verification of dimensional accuracy, surface coating thickness, and visual weld quality. Inspection reports are issued directly to your project quality manager alongside our internal mill test certificates.
Q: What is the minimum order quantity for custom-cut plates?
A: The standard MOQ is 25 tons per order. For project-specific cutting requirements, we can consolidate multiple plate thicknesses and dimensions within a single order to meet this threshold while delivering finished components ready for assembly.
Q: How do you ensure material traceability across the production chain?
A: Every plate carries a unique heat number etched or stenciled on the surface, linked to the original mill test certificate showing chemical composition and mechanical test results. Our integrated facility means no third-party material sourcing — the certification chain remains unbroken from steelmaking through final fabrication.
Q: Do you handle oversized plate shipping and export documentation?
A: Yes. Our logistics team manages professional packing, container loading optimization for 6m-12m lengths, and complete export documentation including certificates of origin required for destination-country customs clearance. We coordinate tracking from factory gate to port discharge.
