Get a Quote

IBR Pipes Supplier in India: IBR Approved Seamless Pipes

IBR Certified Pipes for Boilers, Steam & Feed Water Lines

Dinesh Tube India supplies IBR pipes (pipes certified under the Indian Boiler Regulations) from Mumbai to boiler makers, power plants, process industries and piping contractors across India. We supply carbon steel and alloy steel IBR approved seamless pipes: ASTM A106 Grade B for feed water and steam lines, and A335 P11, P22 and P91 for high-temperature main steam lines and headers. Every pipe comes with the IBR Form III-A certificate.

We supply sizes from NPS 1/2" to 24" in all standard schedules. Send the grade, size, schedule, length and quantity, and we will quote with IBR certification included.


Table of Contents


What Is an IBR Pipe?

An IBR pipe is a steel pipe made, tested and certified to meet the Indian Boiler Regulations, 1950 (IBR). Only certified pipes can be used for boilers, steam pipes and feed water lines in India. IBR is not a material grade. The pipe is made to a recognised standard such as ASTM A106 or A335, and then certified on IBR Form III-A by a Well Known Pipe Maker or under the supervision of an Inspecting Authority. The State Boiler Inspector checks this certificate before approving the installation.

The Boilers Act, 2025 came into force on 1 May 2025 and replaced the Boilers Act, 1923. Regulations made under the old Act continue until new ones are notified, so IBR certification is still what boiler inspectors and EPC clients ask for on steam and feed water piping.

IBR approved seamless steel pipes with Form III-A certification

IBR Pipe Specification

Certification

Indian Boiler Regulations, 1950: Form III-A (pipes)

Carbon Steel Grades

ASTM A106 / ASME SA106 Grade B, Grade C

Alloy Steel Grades

ASTM A335 / ASME SA335 P11, P22, P91 (P5, P9 on request)

Stainless Steel Grades

ASTM A312 / ASME SA312, on request

Pipe Size

NPS 1/2" – 24" (DN 15 – DN 600)

Schedule

SCH 20, 30, 40, STD, 60, 80, XS, 120, 140, 160, XXS

Type

Seamless (welded IBR pipe on request)

Dimensions

ASME B36.10M

Length

Single random, double random, cut length

Ends

Plain end, bevelled end
IBR pipe application industries

IBR Pipe Grades & Typical Uses

MaterialStandard & GradeTypical IBR Use
Carbon steelASTM A106 / SA106 Grade BFeed water lines, low and medium temperature steam lines, blowdown and drain lines
Carbon steelASTM A106 / SA106 Grade CHigher-strength carbon steel steam and feed lines
Alloy steel (1¼Cr-½Mo)ASTM A335 / SA335 P11Steam lines and headers at elevated temperature
Alloy steel (2¼Cr-1Mo)ASTM A335 / SA335 P22Main steam lines and superheater headers
Alloy steel (9Cr-1Mo-V)ASTM A335 / SA335 P91High-pressure, high-temperature main steam lines in power plants
Stainless steelASTM A312 / SA312 (e.g. TP304H, TP347H)Special high-temperature or corrosive service, on request

Allowable stresses and temperature limits for each grade come from the Indian Boiler Regulations and the design code for your project. For alloy steel grades without IBR, see our alloy steel pipes.

What the IBR Form III-A Certificate Covers

Form III-A is the IBR Certificate of Manufacture and Test for pipes, under Regulation 4(e) of the Indian Boiler Regulations, 1950. Tubes are certified on the separate Form III-B (IBR tubes). Form III-A records:

  •   Raw material: steel maker, steel-making process and heat number
  •   Chemical composition of the heat
  •   Manufacturing process, dimensions and tolerances
  •   Mechanical tests: tensile, flattening and bend test results
  •   Hydraulic test pressure applied to each pipe
  •   High-temperature design values of the material
  •   Signatures of the Competent Person and the Inspecting Authority or Well Known Pipe Maker

IBR vs Non-IBR Pipe

PointIBR PipeNon-IBR Pipe
Material gradeSame standard (e.g. A106 B, A335 P22)Same standard
CertificateIBR Form III-A plus mill test certificateMill test certificate (EN 10204 3.1) only
InspectionInspecting Authority or Well Known Pipe MakerManufacturer's own QA or third party
Use in IndiaBoilers, steam pipes, feed water lines under IBRProcess piping not covered by IBR
Lead time & costSlightly higher (inspection and documents)Standard

Need IBR pipes with Form III-A? Send the grade, NPS, schedule, length and quantity to kamlesh@dineshtube-india.com or call +91 83559 10913. You can also send an enquiry.

Types of IBR Pipes

IBR carbon steel seamless pipes A106 Grade B

IBR Carbon Steel Pipes

A106 Grade B and C seamless pipes for feed water and steam lines.
IBR alloy steel pipes A335 P11 P22 P91

IBR Alloy Steel Pipes

A335 P11, P22 and P91 for high-temperature main steam lines and headers.
IBR stainless steel pipes A312

IBR Stainless Steel Pipes

A312 H-grades with IBR certification for special high-temperature service.

IBR Pipe Applications

  •   Main steam and auxiliary steam lines
  •   Boiler feed water lines
  •   Boiler headers and superheater headers
  •   Blowdown, drain and vent lines
  •   Thermal and captive power plants
  •   Sugar mills, distilleries and paper mills
  •   Refineries, petrochemical and fertilizer plants
  •   Textile, food and pharmaceutical process steam boilers
Industries using IBR approved pipes

Also see our IBR tubes, boiler tubes, carbon steel seamless pipes and products for the boiler industry.

IBR Pipes: FAQs

What is an IBR pipe?

An IBR pipe is a steel pipe that is manufactured, tested and certified to meet the Indian Boiler Regulations, 1950 (IBR), so it can legally be used in boilers, steam lines and feed water lines in India. IBR is not a material grade: the pipe is made to a recognised standard such as ASTM A106 Grade B or A335 P11/P22/P91, and is then certified on IBR Form III-A by the maker and the Inspecting Authority or a Well Known Pipe Maker.

What is IBR Form III-A?

Form III-A is the IBR Certificate of Manufacture and Test for pipes under Regulation 4(e) of the Indian Boiler Regulations, 1950. It records the steel maker and heat number, chemical composition, manufacturing process, dimensions and tolerances, test results (tensile, flattening, bend and hydraulic test pressure) and the high-temperature design values of the material. Tubes are certified on the separate Form III-B.

What is the difference between IBR and non-IBR pipe?

The material grade can be identical. The difference is the certification: an IBR pipe comes with IBR Form III-A, witnessed and signed by the Inspecting Authority or a Well Known Pipe Maker, which the Boiler Inspector accepts for boiler and steam-line installations in India. A non-IBR pipe has only the normal mill test certificate and cannot be used where IBR approval is required.

Which pipe grades can be IBR certified?

The most common IBR pipes are carbon steel ASTM A106 Grade B and C for feed water and steam lines, and alloy steel ASTM A335 P11, P22 and P91 for high-temperature main steam lines and headers. Stainless steel ASTM A312 pipes and other grades can also be supplied with IBR certification when the project requires it.

Is IBR certification still required after the Boilers Act, 2025?

The Boilers Act, 2025 came into force on 1 May 2025 and replaced the Boilers Act, 1923. Under its saving provisions, regulations made under the old Act continue to apply until new ones are notified, so boiler inspectors and buyers in India continue to ask for IBR certification of pipes and tubes. Check with your State Boiler Inspectorate for the current requirements on your project.

How do I order IBR pipes?

Send us the grade (for example A106 Grade B or A335 P22), NPS, schedule or wall thickness, length and quantity, and mention that IBR Form III-A is required. Tell us if the inspection must be witnessed by a specific Inspecting Authority, so the certification can be arranged with the order.

IBR Pipe Supply Across India & Export

We supply IBR pipes across India, including Maharashtra, Gujarat, Tamil Nadu, Karnataka, Uttar Pradesh, Delhi NCR, Punjab, Rajasthan, Madhya Pradesh, Odisha, West Bengal and Telangana. We also export carbon and alloy steel pipes to the Middle East, Africa and South-East Asia, with certification to the destination's requirements.