Description
Factory-Direct Hot Rolled Plate Supply — 3 production lines running simultaneously, monthly capacity 20,000+ tons covering SS400, Q235, A36, and St52 grades in 3–200mm thickness.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | SS400/Q235/A36/St52 Hot Rolled Steel Plate |
| Product Type | Steel Plate |
| Steel Grade | SS400, Q235, A36, St52 |
| Standard | ASTM, DIN, BS |
| Thickness | 3–200mm |
| Width | 1500mm |
| Length | 6000mm |
| Technique | Hot Rolled |
| Surface Treatment | Hot Rolled |
| Custom Sizes | Available upon request |
| Application | Shipbuilding, Welding structures, Cutting and bending fabrication, Pressure vessels, Industrial fabrication |
| Origin | Shandong, China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Shipbuilding | Deck plating, hull framing, bulkhead panels |
| Structural Fabrication | Column base plates, gusset plates, splice plates |
| Pressure Equipment | Vessel shells, header plates, flange blanks |
| Infrastructure | Bridge gussets, crane runway beams, embedded plates |
| Industrial Manufacturing | Machine base frames, conveyor support plates, cutting blanks |
Where Steel Grade Equivalence Decides Customs Clearance and Project Acceptance
SS400, Q235, A36, and St52 are not the same steel — they belong to different national standard systems, and treating them as interchangeable without documented equivalence can stall your shipment at the port.
Procurement teams ordering hot rolled carbon steel plate from China frequently encounter a gap between the grade stamped on the mill certificate and the grade specified in their project drawings. A European EPC contractor may call for S235JR per EN 10025, a Middle Eastern shipyard may require A36 per ASTM A36, and a Southeast Asian fabricator may specify SS400 per JIS G3101 — yet the mill in Shandong produces Q235B as its baseline hot rolled plate. Without a formally recognized equivalence table backed by chemical composition and mechanical property comparison, the receiving inspector has grounds to reject the entire batch. [NEED_CITE: steel grade equivalence between EN, ASTM, JIS, and GB standards]
Beyond customs delays, undocumented grade substitution creates liability exposure during structural acceptance. If the project engineer cannot trace the plate chemistry back to a recognized international standard, the fabrication shop bears the cost of rework, and the project owner bears the risk of non-compliance. Every batch of SS400 Q235 A36 hot rolled steel plate supplier shipments from our facility ships with original mill test certificates documenting chemical composition and mechanical properties, with optional SGS or BV third-party inspection to close the traceability gap.
Matching Plate Thickness to Fabrication Method and Structural Load Path
Hot rolled carbon steel plates in the 3–200mm range serve fundamentally different structural roles depending on thickness. Thin plates (3–12mm) are typically cut and bent into brackets, gussets, and light framing members where formability matters more than load-bearing capacity. Medium plates (12–40mm) form the backbone of welded structures — column bases, beam splice plates, and machinery frames — where consistent internal soundness and weldability are critical. Heavy plates (40–200mm) carry primary structural loads in pressure vessels, crane components, and marine structures, where through-thickness properties and laminar tearing resistance become governing design criteria. As a SS400 Q235 A36 hot rolled steel plate supplier, we stock standard thicknesses for immediate dispatch and roll custom gauges for non-standard fabrication requirements.
Engineering Compliance Across ASTM, DIN, and BS Frameworks
The SS400, Q235, A36, and St52 grades in our hot rolled plate program each originate from distinct national standard systems — JIS, GB, ASTM, and DIN respectively — yet they converge in practical application as general-purpose carbon structural steels with comparable weldability and formability. For projects governed by European structural codes, the plate chemistry and mechanical properties must align with EN 10025 requirements; for North American projects, ASTM A36 or A283 compliance is the baseline; for Japanese-specification shipbuilding, JIS G3101 governs. [NEED_CITE: EN 10025 hot rolled structural steel product standards] Third-party inspection through SGS or BV verifies that the delivered plate meets the specified standard’s chemical and mechanical requirements, and original mill test certificates accompany every shipment to support customs clearance and project documentation. Custom cut-to-size plates are available for projects requiring non-standard dimensions, reducing on-site waste and secondary cutting costs.
Understanding the Four-Grade Coverage: SS400, Q235, A36, St52
SS400 per JIS G3101 is the most widely specified hot rolled structural steel in the Asia-Pacific region, valued for its balanced tensile strength and consistent formability across thickness ranges. Q235, governed by GB/T 700, is China’s baseline carbon structural grade and the most readily available hot rolled plate from domestic mills — its chemical composition and mechanical properties overlap substantially with SS400, making it the default choice for export orders targeting general fabrication. A36 per ASTM A36 is the standard structural steel grade in North American construction and infrastructure, with a defined minimum yield point and elongation requirement that distinguishes it from the JIS and GB systems. St52 per DIN 17100 (now superseded by S235JR/S355JR under EN 10025) was historically specified in European and Middle Eastern projects for its higher manganese content and improved weldability. [NEED_CITE: chemical composition comparison of SS400 Q235 A36 St52 steel grades] Our multi-grade inventory allows procurement teams to source the exact grade called out in their project specifications without accepting substitution.
The Hidden Cost of Accepting Unverified Grade Substitution
When a supplier ships Q235 plate labeled as A36 without supporting chemical analysis, the consequences extend far beyond a documentation discrepancy. Project inspectors at the destination port may reject the shipment based on mill certificate mismatch, triggering demurrage charges and return freight costs. If the plate passes customs but fails during structural acceptance — because the actual carbon content exceeds the A36 maximum for weldable grades — the fabricator faces costly rework, weld procedure requalification, and potential structural redesign. [NEED_CITE: consequences of steel grade misidentification in structural fabrication] These hidden costs — port detention, reinspection fees, project delays, and liability exposure — routinely exceed the price difference between verified and unverified material. Every batch of SS400 Q235 A36 hot rolled steel plate supplier material from our facility is backed by heat-number traceability and original mill test certificates, eliminating the gap between what is ordered and what arrives.
Why Procurement Teams Source SS400 Q235 A36 Hot Rolled Steel Plate From Us
We operate three hot rolled plate production lines in Jinan with a combined monthly capacity exceeding 20,000 tons, allowing us to fulfill both urgent spot orders and scheduled project supply from a single facility. Our inventory covers 2,800+ specifications across plate, pipe, and structural sections, meaning procurement teams consolidating multi-category orders avoid the coordination overhead of managing multiple suppliers. Factory-direct pricing applies to every order — there is no trading margin layered onto the mill price, and volume discount programs are available for long-term partners with recurring procurement schedules. Our in-house laboratory conducts three-stage inspection before dispatch, and original mill test certificates documenting chemical composition and mechanical properties ship with every batch. For projects requiring independent verification, we arrange SGS or BV third-party inspection at the loading port, with inspection reports included in the documentation package. Professional export handling covers container loading optimization, customs documentation, and real-time shipment tracking from Jinan to destination port.
Documentation & Compliance
- Mill test certificate documenting SS400/Q235/A36/St52 chemical composition and mechanical properties per applicable standard (JIS G3101, GB/T 700, ASTM A36, or DIN 17100)
- ISO 9001:2015 quality management system certificate covering hot rolled plate production and inspection processes
- SGS or BV third-party inspection report verifying plate thickness tolerance, surface quality, and grade compliance at loading port
- Heat number traceability linking each plate to its original slab cast and rolling schedule
- Customs documentation package including packing list, bill of lading, and certificate of origin for destination-country clearance
- CE marking and FPC certificate available for projects requiring European market compliance documentation
Packaging, Loading & Delivery
- Hot rolled plates bundled with steel strip ties and edge protectors to prevent surface damage and edge deformation during ocean transit
- Seaworthy packaging with waterproof paper wrapping and steel frame support for plates in the 40–200mm thickness range shipped as breakbulk or open-top container cargo
- Container loading optimization for plates in the 3–20mm range, with weight distribution plans maximizing payload within 20ft and 40ft standard containers
- Custom cut-to-size plates packed separately with heat number and grade identification marked on each piece for on-site traceability
- FOB, CIF, and DDP shipping terms available from Qingdao port with real-time container tracking and professional export documentation handling
- Plates longer than 6000mm shipped as open-top or flat-rack container cargo with lashing and bracing plans submitted for carrier approval before loading
Getting Your Quotation and Mill Test Certificates
Submit your plate specifications — including steel grade (SS400, Q235, A36, or St52), thickness, width, length, quantity, and destination port — and receive a competitive quotation with mill test certificate documentation within 12 hours. For non-standard dimensions or custom cut-to-size requirements, share your fabrication drawings and we will confirm feasibility, lead time, and pricing. Our export team handles the complete documentation package including third-party inspection coordination, so your shipment clears customs without grade-compliance delays.
Frequently Asked Questions
Q: What is the difference between SS400, Q235, A36, and St52 — can they be used interchangeably?
A: These four grades originate from different national standard systems (JIS, GB, ASTM, and DIN respectively) and have distinct chemical composition ranges and mechanical property requirements. While their properties overlap in certain areas, they are not automatically interchangeable — the correct grade must match the project specification, and substitution requires documented equivalence backed by chemical and mechanical comparison.
Q: How do you verify plate quality before shipment?
A: Every batch is accompanied by an original mill test certificate documenting chemical composition and mechanical properties. For projects requiring independent verification, we arrange SGS or BV third-party inspection at the loading port, with inspection reports included in the shipping documentation package.
Q: Can you supply custom sizes outside the standard 1500mm × 6000mm dimensions?
A: Yes, custom cut-to-size plates are available upon request. Share your required dimensions and quantity, and we will confirm feasibility, lead time, and pricing based on our current rolling schedule and inventory.
Q: What documentation is provided for customs clearance?
A: The standard documentation package includes the mill test certificate, packing list, bill of lading, and certificate of origin. For projects requiring European market compliance, CE marking and FPC certificates are available. Third-party inspection reports from SGS or BV can be added to the package upon request.
SS400 Q235 A36 Hot Rolled Steel Plate — Request Your Quotation
Send your specifications, steel grade, quantity, and destination port to receive a factory-direct quotation with mill test certificate documentation.
Shandong Xin Jiyuan Special Steel Tube Co., Ltd
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@sdxinjiyuan.com
Website: www.sdxinjiyuan.com
