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Since 1995
Specialist tubing
Enquire for stainless boiler or superheater tubes against your drawing. Provide the grade, tube size, wall basis and inspection needs.
Request a quoteTechnical reference
| Field | Order reference |
|---|---|
| Standard | A213 seamless or A249 welded where the equipment specification calls for it |
| Product or route | Straight or formed boiler or superheater tubes |
| Critical dimensions and fit | Give circuit tag, minimum or nominal wall, bend details and end preparation |
| Supply enquiry | Confirm sizes, lengths, route, documentation and lead time for your order |
Illustrative drawing sizes. The bore and mass are calculated from the nominal dimensions. Use the project tolerance and confirm the size and route in the quote.
| Tube OD (mm) | Wall (mm) | Nominal bore (mm) | Estimated kg/m at 8,000 kg/m³ |
|---|---|---|---|
| 25.4 | 2.77 | 19.86 | 1.58 |
| 38.1 | 3.2 | 31.70 | 2.81 |
| 50.8 | 4 | 42.80 | 4.70 |
Use the approved design code and service conditions. The applicable rating depends on material, temperature, minimum effective wall, joint details and the limits of the connected assembly. A schedule or a hydrostatic test result alone cannot establish an operating pressure.
Reference ASME process piping code B31.3
The grade on the purchase line controls chemistry. Specify the grade with the finished product standard or drawing.
| Check | What to match |
|---|---|
| Grade and specification | TP or UNS on the quotation and material report |
| Heat analysis | Full limits and any stabilising or alloy additions under the ordered edition |
Reference ASTM steel standards
Use the ordered grade, delivery condition and product standard to review the actual tensile, yield, elongation or hardness results required by the order.
| Check | What to verify |
|---|---|
| Condition | Heat treatment or cold-work condition stated for the offered form |
| Acceptance | Project-specified dimensions and relevant test records |
Reference ASTM steel standards
Confirm the approved inspection plan and applicable material and lot records.
| When | What to check |
|---|---|
| Before ordering | Document the required test method, edition and any witness points |
| At delivery | Match the material report and heat or lot identification to the shipment |
Keep seamless and welded routes as separate offers.
For the enquiry, give circuit tag, minimum or nominal wall, bend details and end preparation.
A213 seamless or A249 welded where the equipment specification calls for it · 25.4 × 2.77 mm. Add quantity, lengths, delivery city and the required reports.
Ordering guidance
Provide the nominated tube standard, grade, outside diameter, wall basis and required cut length. If this is a repair, include the equipment specification or drawing number and identify any restrictions on the manufacturing route.
State required tests, third-party inspection or documentation before asking for pricing. Do not infer approval for boiler service from an alloy grade or from use of a general-purpose tube specification.
Check pricing and availability →
Buyer’s guide
Boiler banks, superheaters and economisers can have different approved materials and design conditions. Copy the tube specification, grade and equipment tag from the current drawing. A213 covers certain seamless alloy-steel boiler and superheater tubes, while A249 covers specified welded austenitic tubes. The equipment specification determines the correct route and grade.
Use the actual OD, wall basis and finished length. If the order calls for bent tubes, provide the centreline radius, angles, leg lengths and end preparation. For straight tubes destined for site bending, give the required delivery condition and the blank length shown on the fabrication schedule.
Attach the documentation schedule, marking requirements and any witness points. For an outage, identify which circuits must arrive first and separate straight stock from fabricated pieces. Ask the offer to state dispatch dates and any inspection steps that affect release.
A superheater repair enquiry should include the boiler and circuit tags, grade, specified route, actual OD, minimum or nominal wall, tube or bend drawing and required date at site.
Use the approved boiler material schedule and project acceptance procedure. Matching geometry does not satisfy the boiler specification or design basis.
Technical references ASTM steel standards directory · Alleima high-temperature tube grades · ASME Boiler and Pressure Vessel Code, Section II
Prepare your enquiry
| Item | What to send |
|---|---|
| Product details | Equipment reference · tube standard · grade · OD and wall basis · length · test scope |
| Delivery | Quantity with units, delivery city and required date if known |
| Acceptance | Required certificates and inspection scope; attach the drawing revision where applicable |
Use the specification approved for the equipment. Any change needs review by the project authority.
Technical reference: ASTM steel standards catalogue
Project enquiries
Send your dimensions, quantities and delivery city. Include any inspection or material certificate requirements so they can be quoted against the same line items.
Request a quote → Call +91 99204 92715