Excerpt:
For boiler, heat-exchanger and elevated-temperature pressure applications specified to European standards. Define EN 10216-2, inspection category, heat treatment and elevated-temperature properties together.
QIDA METAL · PRODUCT PROCUREMENT GUIDE
P235GH Seamless Boiler Tube
For boiler, heat-exchanger and elevated-temperature pressure applications specified to European standards. Define EN 10216-2, inspection category, heat treatment and elevated-temperature properties together.
| Procurement Item | Details |
|---|---|
| Applicable Standard | EN 10216-2 / 1.0345 |
| Product Category | Steel Pipes & Tubes / Seamless Pipe |
| 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
- Room-temperature properties are listed by wall-thickness group, distinguishing the grade number from the actual applicable minimum.
- Specify European tube dimensions by actual OD×WT rather than copying American NPS combinations.
- Align inspection category, document type and additional tests at enquiry stage.
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 |
|---|---|---|
| Outside Diameter / mm | 21.3, 26.9, 33.7, 42.4, 48.3, 60.3, 76.1, 88.9, 101.6, 114.3, 139.7, 168.3, 219.1 | Verify the OD series against EN 10220 / the project schedule. |
| Wall Thickness / mm | 2.0, 2.6, 3.2, 3.6, 4, 5, 6.3, 8, 10, 12.5, 16, 20, 25, 32, 40 | Confirm actual OD / wall combinations, minimum wall and tolerances. |
| Length / m | 6, 12 or project fixed lengths | Confirm boiler / heat-exchanger tube lengths against tube sheets and expansion allowances. |
| Delivery / Inspection | Heat-treatment condition + inspection category TC1 / TC2 | Agree the standard edition, application and tests together. |
| Ends & Cleanliness | Plain or bevelled ends; internal and external protection | Specify expansion, welding and flushing / cleanliness requirements separately. |
03 / Standard Chemical Composition
EN 10216-2 / 1.0345. 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 | ≤0.16 |
| Si | ≤0.35 |
| Mn | ≤1.20 |
| P | ≤0.025 |
| S | ≤0.020 |
| Cr | ≤0.30 |
| Mo | ≤0.08 |
| Ni | ≤0.30 |
| Cu | ≤0.30 |
| Nb | ≤0.010 |
| Ti | ≤0.040 |
| V | ≤0.02 |
| Fe | Balance |
Heat analysis, mass %, from public tube data. Check combined Cr+Cu+Mo+Ni limits, aluminium and nitrogen-binding requirements against the ordered standard edition.
04 / Mechanical Properties & Application Limits
| Thickness / Material Condition | Yield Strength Re / Rp0.2 (MPa) | Tensile Strength Rm (MPa) | Elongation After Fracture A (%) |
|---|---|---|---|
| t≤16 mm | ≥235 | 360–500 | Longitudinal ≥25 / transverse ≥23 |
| 16<t≤40 mm | ≥225 | 360–500 | Longitudinal ≥25 / transverse ≥23 |
| 40<t≤60 mm | ≥215 | 360–500 | Longitudinal ≥25 / transverse ≥23 |
Strength in MPa, A in %. Verify elevated-temperature Rp0.2, TC1 / TC2 inspection category, impact direction and test temperature for the project. Room-temperature strength must not be applied to all service temperatures.
05 / Inspection, Processing & Quality Checks
- Check thickness groups and room / elevated-temperature strength. Room-temperature ReH is not an elevated-temperature design value.
- Confirm tensile, impact, hydrostatic / NDT testing and specimen direction for the selected TC category and order.
- Verify heat-treatment batch, heat number, dimensions and ends. Confirm EN 10204 3.1 / 3.2 document requirements before ordering.
- Project rules determine boiler regulatory and third-party approvals. Material data alone does not establish complete equipment compliance.
06 / Export Packaging for This Product
| Stage | Recommended Arrangement | Key Considerations |
|---|---|---|
| End Protection | Use end caps, bevel guards or thread protectors appropriate to the pipe ends. | Keep stainless steel surfaces free of carbon-steel particles and chloride contamination. |
| Size-Separated Bundles | Bundle by OD, wall thickness, length and heat/batch, with durable identification. | Use liners or supported crates for small-diameter thin-wall tubes where appropriate. |
| Transport Support | Multiple supports, strap padding, anti-roll chocks and securing arrangements. | Keep long lengths properly supported; verify package weight and length before loading. |
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:
EN 10216-2 edition / P235GH + OD×WT + minimum / nominal wall + length + TC category + heat treatment + elevated-temperature / impact / NDT requirements + quantity + destination port. Include drawings 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.com139-6951-8618
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.
