Excerpt:
For structural fabrication, equipment bases, supports and general engineering. S355JR provides a higher yield strength for structural selection. Thickness groups, delivery condition and inspection documents must be consistent with the purchase specification.
QIDA METAL · PRODUCT PROCUREMENT GUIDE
S355JR Hot Rolled Structural Steel Plate
For structural fabrication, equipment bases, supports and general engineering. S355JR provides a higher yield strength for structural selection. Thickness groups, delivery condition and inspection documents must be consistent with the purchase specification.
| Procurement Item | Details |
|---|---|
| Applicable Standard | EN 10025-2 |
| Product Category | Steel Plates & Coils / Plate |
| Dimensions & Quantity | The sizes below are enquiry references. Available combinations, quantities and delivery times are subject to written quotation. |
| Documentation | Specify heat/batch inspection documents, standard edition, traceability and project certification in your enquiry. Documents are subject to confirmation of actual availability. |
01 / Product Features & Selection
- Yield strength is listed by thickness group to align design requirements with material acceptance.
- Include parent plates, cut parts, welding and corrosion protection in one enquiry to reduce repeated clarification.
- Identify material by grade, heat number, thickness and batch test results. Photographs illustrate product form.
02 / Specifications, Dimensions & Ordering Options
These dimensions help define your purchase requirement; they do not imply that every combination is in stock. Specify tolerances, quantity, delivery condition and destination port. Submit drawings for special sizes.
| Parameter | Specification / Enquiry Range | Points to Confirm |
|---|---|---|
| Thickness t / mm | 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20; heavier plate: 25, 30, 40, 50, 60, 80, 100, 120 | Check the applicable yield-strength group as thickness increases. |
| Width W / mm | 1000, 1250, 1500, 1800, 2000, 2200, 2500 | Confirm nesting separately for parent plates and cut parts. |
| Length L / mm | 2000, 2500, 3000, 6000, 12000 or drawing-based cutting | Check net length and handling clearance for export loading. |
| Dimensional Tolerances | EN 10029 for heavy plate; EN 10051 for continuously hot rolled flat products | Specify thickness tolerance class, flatness and edge condition. |
| Delivery Condition | +AR as rolled; +N normalized / normalizing rolled by agreement | +AR must not automatically be treated as +N. |
| Edges & Processing | Mill edges, sheared edges; levelling, cut-to-length and cutting requirements may be submitted. | Dimensional combinations and processing capability are confirmed in the quotation. |
03 / Standard Chemical Composition
EN 10025-2. Values are mass percentages (%). Maximum limits are shown by ≤, minimum limits by ≥; ranges are specification limits and Fe is the balance. These are not measured results for a current delivery heat.
| Element / Indicator | Requirement or Range |
|---|---|
| C | ≤0.24 |
| Si | ≤0.55 |
| Mn | ≤1.60 |
| P | ≤0.035 |
| S | ≤0.035 |
| N | ≤0.012 |
| Cu | ≤0.55 |
| Fe | Balance |
Heat analysis, mass %. Applies to the thickness range in the structural steel data used for this page. Exceptions to the nitrogen limit may apply where sufficient aluminium or other nitrogen-binding elements are present; check the material certificate. JR denotes the specified impact class at +20°C and is different from J2.
04 / Mechanical Properties & Application Limits
| Thickness / Material Condition | Yield Strength Re / Rp0.2 (MPa) | Tensile Strength Rm (MPa) | Elongation After Fracture A (%) |
|---|---|---|---|
| 5≤t≤16 mm | ≥355 | 470–630 | ≥20 |
| 16<t≤40 mm | ≥345 | 470–630 | ≥20 |
| 40<t≤63 mm | ≥335 | 470–630 | ≥19 |
| 63<t≤80 mm | ≥325 | 470–630 | ≥18 |
| 80<t≤100 mm | ≥315 | 470–630 | ≥18 |
| 100<t≤120 mm | ≥295 | 450–600 | ≥18 |
Re and Rm are in MPa. A is elongation on a proportional test piece (%); these are transverse values from public plate data. For sections, reconfirm nominal thickness, test direction and the applicable standard. Specify JR impact testing at 27 J / +20°C, specimen size and sampling rules in the order.
05 / Inspection, Processing & Quality Checks
- Verify the EN 10025-2 edition, S355JR grade, +AR/+N delivery condition and heat/batch identification.
- Measure thickness at multiple points, width, length, flatness, camber and edge defects.
- Agree tensile and JR impact testing in the purchase specification. If ultrasonic testing is required, specify the EN 10160 class, coverage and acceptance scope in advance.
- Maintain heat-number traceability from parent plate to cut parts. Determine welding preheat using actual CEV, thickness and qualified welding procedures.
06 / Export Packaging for This Product
| Stage | Recommended Arrangement | Key Considerations |
|---|---|---|
| Surface Protection | Apply temporary rust-preventive oil to carbon steel as agreed. Stainless steel may use protective film and interleaving where required. | Rust preventive must be compatible with subsequent painting and welding. |
| Stacking & Edge Protection | Stack matching sizes evenly on level supports; use protection between corners and steel straps. | Prevent localized dents and exposed-edge damage. |
| Handling & Loading | Select bases and strapping according to package weight, centre of gravity and forklift / lifting equipment. | Check container payload and floor point loads; available volume alone does not determine a safe load. |
Before shipment, cross-check product, grade, heat number, size, piece count, net weight and gross weight against the packing list. Match labels to inspection documents. For solid-wood pallets, dunnage or crates, check destination-country rules; wood subject to ISPM 15 must be treated and marked by an approved provider. Load dry cargo and arrange supports, blocking and securing according to weight and centre of gravity.
07 / How Qida Supports Your Procurement
| Procurement Stage | Qida Coordination | Information for the Buyer |
|---|---|---|
| Requirement Review | Review application, standards, material condition, drawings and acceptance items. | A checkable specification list helps reduce language and unit-conversion errors. |
| Order Confirmation | Confirm material, processing, inspection, packaging, delivery milestones and cost responsibilities item by item. | A clear written quotation and mutually agreed purchase requirements. |
| Delivery Coordination | Coordinate production / sourcing progress, labels, packing lists and shipping documents. | Check dimensions, quantities and heat/batch correspondence at agreed milestones. |
| After-Sales Follow-Up | Review issues using order number, heat number, arrival photographs and test records. | A defined issue description and documented resolution communications. |
Qida focuses on clear specifications, material requirement checks and delivery coordination. Include cutting, cut-to-length, surface treatment, third-party inspection and certificate requirements in your enquiry so that the achievable scope can be agreed before order placement.
08 / Request for Quotation
For an accurate quotation, please provide:
Grade / standard edition + t×W×L + quantity or tonnage + delivery condition + thickness / flatness tolerances + impact / UT requirements + cutting drawings + destination port. Please also send project specifications, drawings, surface samples and inspection plans where available.
Define Specifications, Quality and Delivery in One Enquiry
Send your purchasing list to Shandong Qida Metal Technology Co., Ltd. We will review standards, dimensions and destination requirements with you.
Send an Enquiry · qidamt@163.com
139-6951-8618
Technical Sources & Ordering Notes
This selection and enquiry guide is compiled from the primary public sources below. Values are not an inspection certificate for a delivery batch and do not imply a supply or authorization relationship with the source publishers. The agreed order governs standard edition, product form, thickness range, specimen and delivery condition. Similar grades are not automatically equivalent. Confirm project certification and inspection documents before ordering.
