IBR boiler-tube documents — Form III-B for tubes

IBR boiler-tube procurement in Kanpur starts with the approved tube specification and the product-form certificate, not a generic seamless-pipe description. Sugar mills, boiler contractors, and tender buyers should place Form III-B on each controlled tube line before comparing ex-warehouse Kanpur offers. RP Sales can review that RFQ and return a quote that states the offered source, heat, inspection route, documents, timing, and commercial terms. The quote is the confirmation. This page is not a stock, licence, or certificate promise.

The Indian Boiler Regulations, 1950, as amended, are the Central Boilers Board regulations made under the Boilers Act, 1923. The document this page could retrieve as a primary text is the Indian Boiler (Amendment) Regulations, 2015, G.S.R. 286(E), dated 15 April 2015 (HTTP 200 on 3 September 2026 from the BHEL-hosted Gazette extract). That notification substitutes Regulation 4, Standard requirements, and prints Form III-A for pipes, Form III-B for tubes, and Form III-C for boiler mountings and steam-pipe fittings. The same notification substitutes Regulation 391A as Ageing of Boilers. Use those titles on the RFQ, then let the approved design, inspection plan, competent authority, or boiler inspector decide what applies to the named job.

What IBR is on a purchase file — and what this page does not decide

IBR is a regulation, not a voluntary mill brand and not a substitute for the approved drawing. The 2015 substitution of Regulation 4 opens with construction requirements for boilers: material testing, manufacture under a Competent Person, inspection stages in Appendix J, and a set of certificates, drawings, and specifications that accompany registration. Tubes and steam-pipes are inspected at the makers' works at the stages prescribed in that appendix. That is a construction and registration framework. It is not a statement that every steam-using plant, every water line, or every hydraulic cylinder falls under the same file.

The same 2015 notification inserts Regulation 3B on exemption of a boiler or boiler component in the whole or any part of a State, subject to stated conditions, including design to a named international code and materials not specifically prohibited. Because that exemption route exists in the text we retrieved, this page does not say IBR applies to every boiler or every pressure part. Jurisdiction, exemption, and the documents required for a named installation stay with the State Chief Inspector, the Inspecting Authority, and the approved design.

A buyer comparing Kanpur offers should therefore separate three questions: (1) what product form is on the drawing — tube, pipe, or mounting/fitting; (2) which prescribed form the 2015 Regulation 4 text prints for that product form; and (3) what the inspector on this job will accept. Mixing those questions is how a tube line gets a fittings certificate, or a pipe line gets a tube certificate, and the site file then fails a heat-to-marking check.

Form III-A / III-B / III-C — which one applies to tubes

The mapping below is taken from the substituted Regulation 4 clauses and the substituted form titles in G.S.R. 286(E). It is not taken from Regulation 391 or Regulation 391A. A live Central Boilers Board forms index was not retrieved in this review: cbboe.gov.in did not resolve (origin unreachable, 3 September 2026) and the DPIIT Central Boilers Board URL returned an HTTP 200 JavaScript shell without a readable forms list. Treat the 2015 substituted forms as the official text this page could open, and defer later amendments to the competent authority.

The same Regulation 4 substitution includes a note that, for pipes or tubes made by Well-known Pipe or Tube Makers recognised by the Central Boilers Board under regulations 4A to 4H, a maker certificate in Form III-A or Form III-B may be accepted in lieu of the Inspecting Authority insofar as it relates to stated material tests. That is a recognition route in the 2015 text. This page did not retrieve the current well-known-maker register. Ask the quote to name the offered inspection route; do not assume a website can certify a mill.

Fields printed on the 2015 Form III-B

The substituted Form III-B is headed Certificate of Manufacture and Test for Tubes and cites Regulation 4(f). The fields below are the blanks printed on that form in the 2015 notification we retrieved. They are a purchase-file checklist, not a promise that every offered certificate will be filled the same way, and not a list of tests that this page requires on every boiler.

• Certificate number and date; name of part and quantity; drawing number; maker name and address; customer name and address.
• Design pressure (kg/cm²) and design temperature (°C).
• Raw-material block: process of manufacture; fully killed or rimmed; chemical composition; heat number; size; test-certificate number and date; steel-maker name; Inspecting Authority name.
• Tubes block: process of manufacture; main dimensions; tolerances; specification; tensile strength; chemical composition; elongation; bend, flattening, crushing, flare, and flange tests; other tests; heat treatment; hydraulic test in kg/cm².
• Identification mark of the Inspecting Authority or well-known tube maker; maker and Inspecting Authority or well-known tube-maker signatures; Competent Person signature.
• Temperature table for Et, Sc, Sr, and MAWP, with a note that Sc and Sr need be furnished only for tubes intended for working-metal temperature above 454°C (850°F).

Note (3) on that 2015 Form III-B says that, for stock and sale purpose, one form shall be issued for not more than ten tubes. Note (1) says only applicable columns need be filled. Those notes belong to the form we opened. The inspector on a named job may still ask for a tighter lot size, a specific heat, or an original versus copy. Put the accepted lot rule on the RFQ if the project already has one.

Purchase-file sequence — drawing to site check

The sequence below is a buyer checklist for a Kanpur RFQ. It is not a mill process that RP Sales can run or witness, and it is not a substitute for Appendix J inspection stages in the 2015 Regulation 4 text.

1. Lock the product form — read the approved tube map. A tube line, a steam-pipe line, and a mounting or fitting line take different prescribed forms. Do not write one certificate name across the whole boiler package.
2. Write Form III-B on each tube line — put the 2015 Regulation 4(f) title on the RFQ beside grade, OD, wall, and length. If the inspector has already named a different document, write that name instead and attach the instruction.
3. Ask the quote to name the offered route — source, heat, Inspecting Authority or well-known-maker route, documents that will travel with the lot, and whether copies or originals are proposed. Do not treat a catalogue page as that confirmation.
4. Match markings before cutting — heat number, dimensions, specification, and certificate number have to identify the bundle in the yard. A complete-looking form for another heat does not close the line.
5. Leave acceptance with the inspector — the site boiler inspector decides whether the offered file is enough for hydrotest or commissioning. This page does not publish automatic clearance.

Who needs this certificate, and who does not

Boiler manufacturers, repairers, sugar mills, power-plant contractors, and project teams working inside an IBR-controlled pressure boundary need the certificate specified by the approved design and inspector. The material line should identify the product form and grade. A tube, pipe, fitting, forging, and plate do not share the same certificate description merely because they enter one boiler package.

General water lines, structural fabrication, borewell casing, fire-system distribution, and hydraulic-cylinder work use their own standards and documents. A buyer should not add IBR wording to those orders without a regulatory or project requirement. Equally, a normal MTC should not be treated as a replacement when the approved boiler scope calls for Form III-B on a tube.

Pressure and temperature selection remains an engineering decision. The certificate records manufacture and test particulars for the ordered material. It does not choose the grade, calculate the wall, approve a weld procedure, or confirm that a substituted tube suits the operating condition. Those decisions stay with the approved drawing, design calculation, and responsible boiler authority.

How to write an IBR boiler-tube RFQ

Send the tube map or approved schedule with the enquiry. Put the ASME or ASTM designation, grade, OD, minimum or nominal wall, length, quantity, end finish, and heat-treatment requirement on separate BOQ lines. State "IBR Form III-B required" beside every controlled tube item rather than adding a general note at the end. If the same enquiry also covers steam pipe or mountings, give those lines Form III-A or Form III-C so the offer cannot collapse three product forms into one document.

Add MTC type, hydrostatic or NDT requirements from the approved specification, third-party inspection hold points, marking, end protection, packing, and document-copy requirements. Name the destination state and the receiving inspector's document expectations if the project has already confirmed them. A supplier cannot recreate witnessed manufacture after ordinary stock has been rolled. If the project needs a specific heat or a residual-length rule after cutting, write that on the RFQ before anyone prices a nearby dimensional match.

Commercially, request the material rate, inspection charge, packing, freight, and GST as visible items. This site's published price lists currently state GST 18% extra on an ex-warehouse Kanpur basis (as-of 24 May 2026). State whether the quotation is ex-works Kanpur or delivered. Use the boiler tube price list for a budget range, then submit the controlled requirement through the RFQ page. Budget bands are not a firm offer and are not an IBR-document premium.

Grades commonly named on Indian boiler-tube RFQs

The list below is purchase language seen on Indian tube maps. It is not a complete IBR-approved-materials schedule, and it is not a mandatory grade for every boiler. Copy the drawing. If the drawing is silent, ask the design engineer — do not let a stock list choose the alloy.

• SA-192 — low-carbon seamless boiler tube, often specified for lower- to medium-pressure water tubes. See the SA192 supplier page for size language used on this site.
• SA-210 Grade A1 / Grade C — medium-carbon seamless grades often named for waterwall and superheater duty. Confirm which grade the drawing actually uses before comparing offers.
• SA-213 T11 / T22 / T91 — Cr-Mo alloy seamless grades often named for superheater or reheater tubes. Alloy lines usually need a longer document conversation than carbon lines; that is a planning note, not a published lead time.
• SA-106 / ASTM A106 Grade B — carbon steel seamless pipe language often used for boiler-room piping. If the line is a pipe, the 2015 form title is Form III-A, not Form III-B.

Related pages: how this site describes MTC and TPI, SA192 standard reference, SA210 standard reference, SA213 alloy tube standard, ASTM A335 alloy pipe, IBR standards page, boiler tubes catalogue, sample MTC document. Those pages may still use older form names. For tube RFQs, use Form III-B unless the inspector has written something else.

Standards and compliance checks before release

The procurement reference used on this page is the Indian Boiler Regulations, 1950, as amended by G.S.R. 286(E) of 15 April 2015: Regulation 4 prescribed forms, Form III-B for tubes. The approved drawing then supplies the material specification. Buyers should copy that exact designation into the PO and certificate review sheet. Do not cite Regulation 391 or Regulation 391A as the forms clause. In the 2015 notification we retrieved, Regulation 391A is the ageing-of-boilers substitution. This review did not retrieve a current official text of Regulation 391 itself from a Central Boilers Board origin.

Review the manufacturer name, Inspecting Authority or well-known-maker identity, form number, grade, heat number, dimensions, test entries, stamps, and signatures as one chain. Match the heat number to the tube marking and packing list. A complete-looking form for another heat, another size, or another product form does not close the inspection requirement for the delivered material.

The MTC and Form III-B serve related but different document purposes. Keep both in the purchase file with the PO, approved drawing, TPI release where specified, invoice, packing list, and weighment record. Site teams should receive legible copies before fabrication. Whether the project wants an original, an endorsed copy, or a scanned set is a commercial and inspection-plan question. Ask the quote to state the handover. Do not assume a distributor can recreate a witnessed manufacture record after the fact.

Buying IBR boiler tubes in Kanpur

RP Sales quotes from Kanpur for sugar mills, boiler contractors, fabricators, and industrial procurement teams. The quotation should identify whether the offered lot is available against the required mill documents or must be coordinated against a named manufacturing source. A nearby dimensional match is not IBR-ready unless the matching certificate chain is offered on that quote.

The commercial basis can be ex-warehouse Kanpur or delivered to the project PIN. The site delivery FAQ discusses dispatch geography from the Kanpur warehouse. That FAQ is not a lead-time, availability, or service-area promise for a controlled IBR lot. Actual release depends on grade, dimensions, heat, document review, inspection scope, PO, and payment terms — all of which belong on the quote.

Kanpur buyers can consult the seamless boiler tubes Kanpur page and the Kanpur steel market guide. Outstation procurement teams can use the Lucknow, Prayagraj, Gorakhpur, or Patna landing pages before sending the tube map and destination PIN. Those pages help with freight context. They do not change the form mapping.

Incoming inspection at the boiler shop or site

Keep IBR-controlled material segregated from ordinary tube during unloading and storage. Check bundle tags before cutting, bending, expanding, or welding begins. If one bundle contains mixed or unreadable markings, quarantine it until the supplier, mill document, and Inspecting Authority or well-known-maker records can be reconciled against the PO.

Inspect ends, surfaces, dimensions, and visible transit damage against the PO. Record the heat number beside the piece or bundle identification used by the fabricator. When lengths are cut, transfer the approved identification under the project traceability procedure. Otherwise a valid certificate can become difficult to connect to the installed pressure part, even if the paper itself looks complete.

Raise document questions before fabrication. A missing signature, uncertain heat link, wrong grade, wrong product form, or wrong size is easier to resolve while the material remains identifiable and unused. Retrospective paperwork should not be assumed possible because Form III-B records manufacture and test particulars for a stated lot. If the inspector asks for a confirmation letter, that request belongs to the offered source and the competent authority, not to a website claim.

FAQ — IBR documentation

Sources and references

• Indian Boiler (Amendment) Regulations, 2015, G.S.R. 286(E), 15 April 2015 — substituted Regulation 4(e)–(g) and Forms III-A, III-B, and III-C; substituted Regulation 391A (Ageing of Boilers). Retrieved 3 September 2026, HTTP 200, tenders.bhel.com Gazette extract PDF.
• Central Boilers Board origin cbboe.gov.in — DNS did not resolve from this crawler on 3 September 2026 (origin unreachable). No forms-index claim is taken from that miss.
• DPIIT page https://www.dpiit.gov.in/central-boilers-board — HTTP 200 on 3 September 2026, JavaScript shell; no readable forms list in the fetched HTML.
• IBR standards page on this site — use it for related internal navigation. For tube RFQs, prefer the Regulation 4 mapping on this page over older Form III-C wording that may still appear elsewhere on the site.
• RP Sales quality, MTC, and TPI page for how this site describes dispatch documentation.
• RP Sales boiler tube price list, reviewed 24 May 2026 — indicative Kanpur bands, not a document premium.