Excerpt:
For high-temperature carbon-steel piping, plant pipework and general industrial pressure piping. Seamless manufacture eliminates a longitudinal weld; suitability for pressure and temperature still depends on the design code and project material class.
QIDA METAL · PRODUCT PROCUREMENT GUIDE
ASTM A106 Gr.B Seamless Steel Pipe
For high-temperature carbon-steel piping, plant pipework and general industrial pressure piping. Seamless manufacture eliminates a longitudinal weld; suitability for pressure and temperature still depends on the design code and project material class.
| Procurement Item | Details |
|---|---|
| Applicable Standard | ASTM A106/A106M Grade B |
| 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
- Clear NPS, DN, actual OD and Schedule references simplify international purchasing.
- Confirm hot-finished / cold-drawn manufacture, heat treatment, pipe ends and inspection together.
- Match heat numbers to bundle identification for receiving inspection and traceability.
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 |
|---|---|---|
| Manufacture / Delivery | Seamless; hot-finished or cold-drawn, heat treated as required by A106 | Required heat treatment after cold drawing must not be omitted. |
| Size Designation | NPS + Schedule, or actual OD × wall thickness WT | Specify nominal or minimum wall thickness. |
| Common Outside Diameters / mm | 21.3, 26.7, 33.4, 42.2, 48.3, 60.3, 73.0, 88.9, 114.3, 168.3, 219.1, 273.0, 323.9 | Do not mix EN 10255 diameters of 76.1 / 165.1 with ASME dimensions. |
| Length / m | 6, 12; fixed or random lengths by enquiry | Specify individual length tolerance and end squareness. |
| Pipe Ends | Plain, bevelled or project-specific | Confirm bevel angle, root face and end caps against drawings. |
| Surface | Black, temporary rust-preventive oil or other agreed protection | Temporary surface protection does not replace the final service corrosion design. |
Common NPS / DN and Schedule Dimensions
Common ASME B36.10M reference dimensions, in mm. DN is a nominal designation, not the actual outside diameter. Check the full standard for larger sizes or other schedules.
| NPS / in | DN | Actual Outside Diameter OD | Sch 40 Nominal Wall Thickness | Sch 80 Nominal Wall Thickness |
|---|---|---|---|---|
| 1/2 | 15 | 21.3 | 2.77 | 3.73 |
| 3/4 | 20 | 26.7 | 2.87 | 3.91 |
| 1 | 25 | 33.4 | 3.38 | 4.55 |
| 1¼ | 32 | 42.2 | 3.56 | 4.85 |
| 1½ | 40 | 48.3 | 3.68 | 5.08 |
| 2 | 50 | 60.3 | 3.91 | 5.54 |
| 2½ | 65 | 73.0 | 5.16 | 7.01 |
| 3 | 80 | 88.9 | 5.49 | 7.62 |
| 4 | 100 | 114.3 | 6.02 | 8.56 |
| 5 | 125 | 141.3 | 6.55 | 9.53 |
| 6 | 150 | 168.3 | 7.11 | 10.97 |
| 8 | 200 | 219.1 | 8.18 | 12.70 |
| 10 | 250 | 273.0 | 9.27 | 15.09 |
| 12 | 300 | 323.9 | 10.31 | 17.48 |
03 / Standard Chemical Composition
ASTM A106/A106M Grade B. 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 | ≤0.30 |
| Si | ≥0.10 |
| Mn | 0.29–1.06 |
| P | ≤0.035 |
| S | ≤0.035 |
| Cr | ≤0.40 |
| Ni | ≤0.40 |
| Mo | ≤0.15 |
| Cu | ≤0.40 |
| V | ≤0.08 |
| Fe | Balance |
Heat analysis, mass %. Check the combined Cr, Cu, Mo, Ni and V limits and permitted manganese increase for carbon reduction against the contractual standard edition. This page does not replace the full standard.
04 / Mechanical Properties & Application Limits
| Thickness / Material Condition | Yield Strength Re / Rp0.2 (MPa) | Tensile Strength Rm (MPa) | Elongation After Fracture A (%) |
|---|---|---|---|
| Seamless pipe, room temperature | ≥240 | ≥415 | Calculated by specimen area / wall-thickness formula |
Strength in MPa. Elongation depends on specimen and wall thickness; one percentage is not valid for every size. Elevated-temperature allowable stress follows the project design code. A tensile strength of 415 MPa is not a working pressure.
05 / Inspection, Processing & Quality Checks
- Check A106 Grade B, heat treatment, actual heat numbers and hydrostatic / electrical test records.
- Measure OD, minimum wall, ovality, straightness and bevels. Nominal wall thickness does not replace minimum measured thickness.
- Submit additional UT, PMI, impact or third-party witness requirements for applicability and acceptance review.
- ASTM A53, API 5L and GB grades must not be treated as equivalent without technical review.
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:
A106/A106M edition / Gr.B + NPS / Sch or OD×WT + length + heat treatment + ends + quantity + inspection and documents + destination port. Include project specifications, 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.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.
