Seamless Pipes in Lucknow — ASTM A106 & IS 1239

Lucknow process, utility and boiler enquiries require more than the word “seamless”. RP Sales handles those enquiries from Kanpur on an ex-warehouse basis. The buyer must state the approved material, NPS or OD, wall or schedule, length, ends, inspection plan and document requirements. Availability, mill route, release date and destination transport are confirmed for the selected lot; a generic grade list is not a stock or delivery commitment.

Lucknow seamless enquiries: prove the line class first

The official Invest UP feasibility study documents Lucknow's industrial profile, but it does not establish weekly demand, stock, grades or pressure classes. A process or utility enquiry should therefore begin with the approved line class: governing code, material grade, NPS, schedule, design conditions, corrosion allowance, ends, heat treatment and inspection documents. Boiler work must also distinguish a steam pipe using Form III-A from a tube using Form III-B and a boiler mounting or fitting using Form III-C where the authority-approved route applies.

A seamless load should be segregated by material, NPS and schedule because adjacent walls can look alike at receipt. Require bundle tags and a document index that map the heat number to each line. Ask the quotation to separate ex-warehouse Kanpur material, packing, freight, unloading and tax, and include the destination PIN code and site window. Payment, validity and carrier timing are order-specific; neither industry nor account type creates a published credit or transit entitlement.

Grades and specifications we supply

The following carbon and alloy families can be quoted subject to the approved specification and confirmed availability:

• ASTM A106 Gr B/C — seamless carbon steel pipe for high-temperature refinery and power-plant service.
• ASTM A335 P11/P22/P91 — alloy steel pipes for high-temperature steam and power-generation piping.
• IS 1239 Part 1 (Seamless) — Indian-standard seamless pipes for general engineering and medium-pressure service.
• API 5L Gr B to X70 — line pipe for oil & gas transmission (PSL1 and PSL2).
• SA192 / SA210 / SA213 — boiler-tube enquiries where the approved tube map and governing inspection plan name the exact grade.
• Sizes: NPS 1/2" to 24" in Schedules 40, 80, 120, 160, and XXS.

How wholesale pricing works for seamless pipes

Seamless pipe pricing is driven by the source mill, manufacturing route, grade, heat treatment, size, schedule, testing and quantity. Compare quotations on the same ex-warehouse Kanpur basis, then add the actual packing, freight, unloading and tax lines for the destination.

• Prices are quoted per kilogram or per metric ton (MT).
• Theoretical or actual weight basis is clearly stated in every quotation.
• Ask for part-load and dedicated-vehicle freight as separate carrier-backed options.

Delivery from Kanpur to Lucknow

Delivery is planned after the material, bundle dimensions, total mass, vehicle, receiving PIN code and unloading window are confirmed. Ask for the proposed packing and carrier estimate on the quotation, then reconfirm the release before scheduling the receiving crew.

Heat-wise documents for a Lucknow seamless order

Traceability is critical in seamless-pipe procurement. The required MTC, statutory form, tax documents and any third-party inspection record must be listed in the RFQ and confirmed for the selected lot; a generic product-page promise is not a substitute for the accepted document schedule.

• Original Mill Test Certificates (MTC) stating chemical & physical properties.
• The applicable component-specific IBR form: III-A for steam pipes, III-B for tubes, or III-C for boiler mountings/fittings.
• Tax-compliant e-way bills and GST invoices.

How to place an order from Lucknow

1. Send us your Bill of Quantities (BOQ) with NPS, schedule, grade, end finish, and your Lucknow delivery address.
2. The sales team checks grade, availability, inspection and delivery inputs before quoting.
3. Approve the quotation and issue a Purchase Order (PO).
4. After order acceptance, obtain the confirmed release date and carrier details for the named destination.

Trust signals

NPS and OD reference

Who needs seamless pipe in Lucknow, and who can use ERW instead

Seamless pipe belongs on a Lucknow RFQ where the governing code, approved material specification, pressure-temperature design, or required manufacturing route calls for it. The official PM MITRA feasibility study describes a district industrial profile spanning engineering, pharmaceuticals and food processing, but that local mix does not establish a pipe grade. A process-plant utility line, captive-power package or boiler-house refurbishment must use the material and component-specific regulatory documentation named in its controlled design. A TPI hydrotest verifies the ordered test requirement; the test alone does not decide between seamless and ERW.

ERW can lower cost on cold-water distribution, structural skids, scaffolding, fencing, and air lines when the governing code and approved drawing permit that manufacturing route. A frequent Lucknow error is specifying seamless by habit without checking the service conditions or project specification. Send the design pressure, temperature, media, corrosion allowance, and governing code with the RFQ so the quotation follows the engineer's material selection. Grade context sits on the ASTM A106 guide and the Kanpur seamless hub.

RFQ checklist: what to state when you order seamless pipe in Lucknow

Seamless quotations move fastest when the RFQ speaks NPS and schedule. State NPS with OD in mm, schedule with wall in mm, exact grade and standard, length basis, and end finish. Add quantity, receiving PIN code, design conditions and the document list copied from the approved project files. For IBR material, identify the component: III-A applies to steam pipes, III-B to tubes, and III-C to boiler mountings or fittings. MTC and any TPI scope remain separate lines.

Commercial terms need the same precision. Confirm ex-warehouse Kanpur material, freight, packing, GST and whether theoretical or actual weighment governs billing. If the line is mill-sourced, require the mill slot and inspection hold points to be confirmed before scheduling a shutdown. Send the package through the RFQ form and use the seamless price list only as dated budget context.

Worked example: weighing a 2-inch Schedule 40 seamless lot

Take a quantity-planning example, not a material-selection recommendation: 60 lengths of NPS 2 inch Schedule 40 seamless A106 Gr B, 6 m each, for a line whose approved specification already names that material. The site schedule chart gives OD 60.3 mm with a 3.91 mm wall for this NPS and schedule. Apply W = (OD minus wall) times wall times 0.02466: (60.3 minus 3.91) times 3.91 times 0.02466 equals 5.44 kg per metre. Rounded to one decimal place, one 6 m length weighs 32.6 kg; using that same rounded figure, 60 lengths total 1,956 kg, or about 1.96 MT.

Use the 1.96 MT figure to request transport options, not to assume a part-load category or consolidation saving. Give the carrier the confirmed bundle dimensions, mass, Lucknow PIN code and unloading limits. Apply the current quoted Sch 40 rate, legally applicable tax and freight; obtain a separate compliant Sch 80 offer instead of inferring price from wall alone. At receipt, match the stencil schedule and heat number against the MTC and controlled line list.

Common mistakes in Lucknow seamless procurement, and inspection points

Seamless-pipe disputes often centre on grade, schedule and traceability. A106 cannot replace an A335 grade without an approved design change, and Sch 40 cannot replace Sch 80 because the outside appearance looks similar. Filing an MTC without linking its heat number to the pipe marking breaks the intended traceability. Bevel condition and end protection should be inspected against the PO before the lot is released for fabrication.

Inspect seamless arrivals strictly. Verify OD and wall with calipers on two pieces per bundle, read grade and schedule stencils against the MTC heat lines, cap bevelled ends until fit-up, and store alloy grades apart from carbon steel. Witness the hydrotest hold where the ITP calls for it, and verify the component-specific IBR form where applicable. Certification background sits on the MTC and TPI quality page and the IBR guide.

Standards and compliance for Lucknow seamless and boiler orders

Material selection follows the approved design code and drawing. A106, A53, API 5L and A335 are different product and service specifications, not interchangeable catalogue grades. Where IBR applies, steam pipes use Form III-A and SA192, SA210 or SA213 tubes use Form III-B; boiler mountings and fittings use Form III-C. Mill certificates follow the inspection-document route actually required by the project.

Read pressure against temperature, not grade alone. A106 Gr B at elevated temperature carries lower allowable stress than at ambient, so the wall calculation must use the hot rating. Confirm whether the drawing wants normalized or as-rolled condition on alloy grades before ordering. Study the ASTM A106 guide, the API 5L guide, the ASTM A335 guide, and the IBR guide. Sources for each code appear under References below.

References

The geometry example reuses the site schedule chart. Lucknow context comes from official Invest UP material; the approved line class and purchased standards remain controlling.

• ASTM A106 seamless carbon steel for high-temperature service. See ASTM A106 guide.
• API 5L line pipe, PSL1 and PSL2. See API 5L guide.
• ASTM A335 alloy steel pipe, grades P11, P22, P91. See ASTM A335 guide.
• Indian Boiler Regulations component forms: III-A for steam pipes, III-B for tubes and III-C for boiler mountings/fittings. See the IBR guide.
• NPS 2 inch Sch 40 wall 3.91 mm with OD 60.3 mm. See pipe schedule chart.
• Indicative seamless price bands by schedule and grade; obtain a current quote for the exact wall and quantity. See seamless price list.
• Invest UP, PM-MITRA Park Lucknow feasibility study: district industrial profile.

FAQ