IBR Carbon Steel Seamless Pipes are seamless carbon steel pipes and tubes manufactured, tested and certified in line with the Indian Boiler Regulations (IBR), 1950. They are mandatory wherever pipes form part of a boiler or steam line covered by the Regulations — boiler headers, steam mains, feed water lines and superheater connections — and every length is traceable to IBR-approved test documentation.
Sarovar Tube Industries stocks and supplies IBR approved carbon steel seamless pipes in ASTM A106 / ASME SA106 Grade B and C, ASTM A53 Grade B, ASME SA192 and SA210 from Mumbai. Material is supplied with the mill test certificate and IBR test certificate verified by an IBR-recognised inspecting authority, so it can be accepted directly by the boiler inspectorate.
The table below sets out the standard supply range for IBR Carbon Steel Seamless Pipes. Sizes and finishes outside this range are supplied against firm orders.
| Parameter | Details |
|---|---|
| Size Range | NPS 1/8 inch to 24 inch (10.3 mm to 610 mm OD) |
| Wall Thickness | Sch 10, 20, 30, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS |
| Length | Single Random 4-7 m, Double Random 7-13 m, cut lengths on request |
| End Finish | Plain end, bevelled end (30 degrees) |
| Manufacturing | Hot finished and cold drawn seamless |
| Surface | Black / varnished, mill finish, anti-rust oiled |
| Dimensional Standard | ASME B36.10M |
| Certification | IBR test certificate + EN 10204 3.1 mill test certificate |
| Description | Details |
|---|---|
| Governing Regulation | Indian Boiler Regulations (IBR), 1950 |
| Pipe Grades | ASTM A106 / ASME SA106 Grade B and Grade C, ASTM A53 / ASME SA53 Grade B |
| Boiler Tube Grades | ASME SA192, ASME SA210 Grade A1 and Grade C, ASTM A179 |
| Low Temperature Grade | ASTM A333 / ASME SA333 Grade 6 |
| Equivalent Grades | DIN 17175 St 35.8 / St 45.8, EN 10216-2 P235GH / P265GH |
| Certification | IBR test certificate, EN 10204 3.1 as standard, 3.2 with third party inspection on request |
| NPS (inch) | OD (mm) | Sch 40 WT (mm) | Sch 40 (kg/m) | Sch 80 WT (mm) | Sch 80 (kg/m) | Sch 160 WT (mm) | Sch 160 (kg/m) | XXS WT (mm) |
|---|---|---|---|---|---|---|---|---|
| 1/8 | 10.3 | 1.73 | 0.37 | 2.41 | 0.47 | - | - | - |
| 1/4 | 13.7 | 2.24 | 0.63 | 3.02 | 0.80 | - | - | - |
| 3/8 | 17.1 | 2.31 | 0.85 | 3.20 | 1.10 | - | - | - |
| 1/2 | 21.3 | 2.77 | 1.27 | 3.73 | 1.62 | 4.78 | 1.95 | 7.47 |
| 3/4 | 26.7 | 2.87 | 1.68 | 3.91 | 2.19 | 5.56 | 2.89 | 7.82 |
| 1 | 33.4 | 3.38 | 2.50 | 4.55 | 3.23 | 6.35 | 4.23 | 9.09 |
| 1 1/4 | 42.2 | 3.56 | 3.38 | 4.85 | 4.47 | 6.35 | 5.60 | 9.70 |
| 1 1/2 | 48.3 | 3.68 | 4.05 | 5.08 | 5.41 | 7.14 | 7.24 | 10.15 |
| 2 | 60.3 | 3.91 | 5.44 | 5.54 | 7.48 | 8.74 | 11.11 | 11.07 |
| 2 1/2 | 73.0 | 5.16 | 8.63 | 7.01 | 11.41 | 9.53 | 14.91 | 14.02 |
| 3 | 88.9 | 5.49 | 11.29 | 7.62 | 15.27 | 11.13 | 21.33 | 15.24 |
| 3 1/2 | 101.6 | 5.74 | 13.57 | 8.08 | 18.62 | - | - | - |
| 4 | 114.3 | 6.02 | 16.07 | 8.56 | 22.31 | 13.49 | 33.53 | 17.12 |
| 5 | 141.3 | 6.55 | 21.78 | 9.53 | 30.95 | 15.88 | 49.09 | 19.05 |
| 6 | 168.3 | 7.11 | 28.26 | 10.97 | 42.56 | 18.26 | 67.55 | 21.95 |
| 8 | 219.1 | 8.18 | 42.53 | 12.70 | 64.63 | 23.01 | 111.25 | 22.23 |
| 10 | 273.0 | 9.27 | 60.29 | 15.09 | 95.97 | 28.58 | 172.25 | 25.40 |
| 12 | 323.8 | 10.31 | 79.72 | 17.48 | 132.01 | 33.32 | 238.72 | 25.40 |
| 14 | 355.6 | 11.13 | 94.49 | 19.05 | 158.08 | 35.71 | 281.68 | - |
| 16 | 406.4 | 12.70 | 123.29 | 21.44 | 203.48 | 40.49 | 365.30 | - |
| 18 | 457.0 | 14.27 | 155.91 | 23.83 | 254.59 | 45.24 | 459.51 | - |
| 20 | 508.0 | 15.09 | 183.37 | 26.19 | 311.17 | 50.01 | 564.81 | - |
| 22 | 559.0 | - | - | 28.58 | 373.83 | 53.98 | 672.26 | - |
| 24 | 610.0 | 17.48 | 255.14 | 30.96 | 442.08 | 59.54 | 808.22 | - |
Dimensions as per ASME B36.10M and weights as per the Sarovar Tube Industries catalogue chart, NPS 1/8 inch to 24 inch. Sch 10, 20, 30, STD, XS, 60, 100, 120 and 140 wall thicknesses also supplied — refer to our catalogue or ask for the full schedule chart.
Composition limits in weight percent for the most commonly supplied IBR grade, ASTM A106 / ASME SA106 Grade B. Limits for other grades are shown on the mill test certificate.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.30 max |
| Manganese (Mn) | 0.29 - 1.06 |
| Phosphorus (P) | 0.035 max |
| Sulphur (S) | 0.035 max |
| Silicon (Si) | 0.10 min |
| Chromium (Cr) | 0.40 max |
| Copper (Cu) | 0.40 max |
| Molybdenum (Mo) | 0.15 max |
| Nickel (Ni) | 0.40 max |
| Vanadium (V) | 0.08 max |
Minimum room temperature properties for ASTM A106 / ASME SA106 Grade B. Actual results for the heat supplied are recorded on the mill test and IBR certificates.
| Property | Value |
|---|---|
| Tensile Strength | 415 MPa (60,000 psi) min |
| Yield Strength | 240 MPa (35,000 psi) min |
| Elongation (longitudinal) | 30% min |
| Elongation (transverse) | 16.5% min |
| Density | 7.85 g/cm3 |
Material is released only after the following checks are completed and recorded:
IBR Carbon Steel Seamless Pipes are specified across the following industries and services:
IBR stands for Indian Boiler Regulations, 1950. Pipes used in boilers and steam lines covered by the Regulations must be manufactured, tested and certified as per IBR, and each supply must be backed by an IBR test certificate accepted by the boiler inspectorate.
We supply ASTM A106 / ASME SA106 Grade B and C, ASTM A53 Grade B, ASME SA192, ASME SA210 Grade A1 and C and ASTM A333 Grade 6 with IBR certification.
Every consignment ships with the manufacturer's mill test certificate (EN 10204 3.1) and the IBR test certificate verified by an IBR-recognised inspecting authority. Third party inspection can be arranged on request.
IBR carbon steel seamless pipes are supplied from NPS 1/8 inch to 24 inch in schedules from Sch 10 to XXS. Refer to the dimension chart above and our catalogue for the full size range.
Custom fabrication, special sizes and complete export documentation are handled in house. Send us your drawing or specification and our technical team will come back with a detailed offer, usually within one working day.