ASTM A106 Grade B pipe for plant and fabrication purchases
We supply seamless carbon steel pipe for material lists that require a pipe body without a production weld. Our ASTM A106 Grade B selections cover NPS 1/2–8 in Schedule 40 and 80, with full-length and cut-piece supply.
A106 Grade B pipe is supplied to the specified diameter, wall and delivered condition. Full lengths, finished cut pieces and machining blanks are kept separate on the cut list.
ASTM A106 covers seamless carbon steel pipe intended for high-temperature service. For a plant order, the design still sets the allowable pressure and temperature; we supply the grade and dimensions on that approved pipe schedule.
A fabricator may need extra length for facing or a specified bore allowance for an end detail. These allowances belong to the purchased blank, so cutting to the final drawing length too early does not remove material needed in the shop.
| Item | Supply Range |
|---|---|
| Product | Seamless carbon steel round pipe |
| Manufacturing type | Hot-finished or cold-drawn route, identified on the order |
| Standards & grades | ASTM A106/A106M Grade B; other specifications treated as separate selections |
| Nominal pipe size | NPS 1/2–8 selected sizes below; broader catalog inquiries by actual specification |
| Wall designation | Schedule 40 and 80 in the dimensional selection |
| Length formats | 6 m, 12 m and cut lengths |
| Base surface | Mill surface with ordered cleaning and temporary protection |
| Protection options | Oil, varnish or specified downstream coating scope |
| Connection options | Plain or beveled; machined ends to drawing |
| Additional processing | Cutting, facing, deburring and retained machining allowance |
| Inspection & records | Material identity, wall distribution, dimensions and required pipe tests |
| Packing & delivery | Separated by grade, wall and finished length with protected ends |
Full lengths and cut pieces are listed separately, including any allowance needed for subsequent machining.
The table pairs each NPS with actual OD and two nominal wall series for a direct dimensional comparison.
Swipe left to see all columns.
| NPS / actual OD (mm) | Schedule 40 wall (mm) | Schedule 80 wall (mm) |
|---|---|---|
| 1/2 / 21.3 | 2.77 | 3.73 |
| 1 / 33.4 | 3.38 | 4.55 |
| 1 1/2 / 48.3 | 3.68 | 5.08 |
| 2 / 60.3 | 3.91 | 5.54 |
| 3 / 88.9 | 5.49 | 7.62 |
| 4 / 114.3 | 6.02 | 8.56 |
| 6 / 168.3 | 7.11 | 10.97 |
| 8 / 219.1 | 8.18 | 12.70 |
Dimensions follow the nominal pipe series; acceptance follows the ordered A106 specification. The table is not a service-pressure rating.
Hot-finished or cold-drawn supply retains the specified delivery condition. For machined parts, the cut list also includes the facing or bore allowance needed by the next operation.
We cut finished-length pieces and machining blanks as separate items. Prepared bevels follow the specified joint detail, while blanks retain the agreed machining allowance.
Temporary oil or varnish supports storage and handling. The fabricator's next operation may require a clean bore or an uncoated weld area, so those areas are kept distinct from general surface protection.
Inspection covers wall distribution, surface condition and material identity, with the tests required by the ordered A106 specification.
A solid starting form is pierced and worked into a hollow section, then sized and finished by the selected route. The delivery records identify the ordered material and condition.
Wall checks consider variation around the circumference as well as the nominal value. Applicable pressure or nondestructive testing addresses pipe integrity under the ordered specification.
The material certificate connects the grade and test results to the delivered pipe batch.
Wall checks cover variation around the circumference against the ordered tolerance.
The manufacturing route and applicable heat-treatment condition stay with the material record.
End squareness, bevel and any machining allowance are checked against the released cut list.
Schedule 40 and 80 can share the same outside diameter. Bundle references keep them distinct during receiving and workshop allocation.
End caps limit loose debris entering the pipe. Machined or beveled ends are protected from direct contact during strapping and loading.
Part references distinguish final-length pieces from blanks that still need facing. The packing list records both their lengths and quantities.
We quote the pipe, cut plan and required inspection as one supply scope. Production completion and transport time are listed separately for the destination and required receipt date.
A change of manufacturing route still needs the project's material approval. Matching diameter and nominal wall alone does not establish compliance with the original grade, tests or delivery condition.
Yes, but compare the finished part with the pipe's tolerance envelope. A nominal inside diameter calculated from OD minus twice the wall is not a guaranteed finished bore or machining allowance.
No. An exact 20 ft length is 6.096 m. We retain the requested unit and finished length on the order, so 6 m and exact 20 ft pieces are not treated as the same cut length.
At the same NPS, Schedule 40 and 80 use the same nominal OD in the table. The wall and resulting bore change, which matters for internal fit and flow calculations.
We can review them on the same material list. Grade, wall and processing minimums are priced by line, so the combined order can keep replacement pieces identifiable without presenting them as local ready stock.
Yes, those areas can be identified separately from general surface protection. The finish scope states the required bore condition and any uncoated areas needed for welding or later machining.
Attach the A106 pipe list with quantity and destination. If the pipe is a machining blank, include the finished-part drawing so the cut length and allowance can be priced correctly.