BS 3059 Part 2 Tubes are carbon steel boiler and heat exchanger tubes manufactured for elevated-temperature and pressure service in boilers, superheaters, reheaters, heat exchangers, and steam pipeline systems.BS 3059 Part 2 Tubes have higher mechanical and temperature resistant properties than BS 3059 Part 1 Tubes and are suited for use under more severe operating conditions. These tubes are produced to BS 3059-2:1990 specification and are favoured in power plants, refineries, petrochemicals and thermal processing applications where high levels of pressure and temperature strength are needed. They have a controlled chemical composition that is ideal for strength, weldability, durability and thermal stability for long-term use in industry. USA Piping Solution offers a full range of BS 3059 Part 2 Tubes in various grades, sizes and specifications available for critical applications around the world.
Specification of BS 3059 Part 2 Tubes
| Feature | Details |
|---|---|
| Product Type | Seamless Carbon Steel Boiler Tubes |
| Standard | BS 3059 Part 2 / BS 3059-2:1990 |
| Grades | BS 3059 Part 2 Grade 360 and Grade 440, subject to project specification and MTC verification |
| Manufacturing Process | Hot Finished / Cold Drawn Seamless |
| Outer Diameter (OD) | 19 mm to 127 mm (Custom sizes available) |
| Wall Thickness | 2 mm to 20 mm (As per requirement) |
| Length Options | Random Length / Fixed Length / Custom Cut Length |
| End Type | Plain End / Beveled End |
| Primary Application | Boilers, Heat Exchangers & Pressure Services |
Chemical Composition of BS 3059 Part 2 Grade
| Grade | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulphur (S) | Cr | Mo |
|---|---|---|---|---|---|---|---|
| 440 | 0.12 - 0.18 | 0.10 - 0.35 | 0.90 - 1.20 | ≤ 0.035 | ≤ 0.035 | - | - |
BS 3059 Part 2 Tubes Mechanical Properties
| Grade | Tensile (MPa) | Yield (MPa) | Elongation % |
|---|---|---|---|
| 440 | 440 - 580 | ≥ 245 | ≥ 21 |
Equivalent Grades of BS 3059 Part 2 Tubes
| Standard Body | Designation | Equivalent Grade |
|---|---|---|
| DIN (German) | DIN 17175 | St 35.8 |
| EN (European) | - | - |
| BS (British) | - | - |
| NFA (French) | NFA A 49-215 | TU 37-c |
| ASTM (USA) | ASTM A106 | Grade B |
| ASME (USA) | ASME SA 106 | Grade B |
BS 3059 Part 2 vs Part 1 Comparison
| Feature | BS 3059 Part 1 Tubes | BS 3059 Part 2 Tubes |
|---|---|---|
| Standard | BS 3059 Part 1 | BS 3059 Part 2 |
| Material Type | Carbon Steel Tubes | Carbon Steel & Alloy Steel Tubes |
| Primary Application | General pressure and heat transfer applications | High-temperature and high-pressure applications |
| Operating Temperature | Moderate temperature service | Elevated temperature service |
| Pressure Handling | Medium pressure resistance | Higher pressure resistance |
| Common Uses | Boilers, condensers, heat exchangers | Boilers, superheaters, steam pipelines, heat exchangers |
| Mechanical Properties | Good strength and durability | Enhanced tensile strength and thermal stability |
| Heat Resistance | Moderate | Excellent |
| Manufacturing Type | Seamless, ERW, Welded | Mainly Seamless |
| Industrial Applications | General engineering, oil & gas, petrochemical industries | Power plants, refineries, petrochemical and thermal industries |
| Grades Available | Grade 320, 360, 440 | Grade 360 and higher temperature grades |
| Performance in Extreme Conditions | Suitable for standard industrial environments | Designed for critical high-temperature environments |
Application Uses of BS 3059 Part 2 Tubes
- Petrochemical Industry
- Chemical Industry
- Oil and Gas Industry
- Pulp & Paper Industry
- Power Plant Industry
- Food Processing Industry
- Pharmaceuticals Industry
- Energy Industry
- Aerospace Industry
Frequently Asked Questions
What are BS 3059 Part 2 Tubes?
BS 3059 Part 2 Tubes are boiler and heat exchanger tubes manufactured for elevated-temperature and high-pressure service. They are commonly used in boilers, superheaters, reheaters, heat exchangers, and steam pipelines.
What is the difference between BS 3059 Part 1 and Part 2 Tubes?
BS 3059 Part 1 tubes are used for general pressure and heat-transfer service, while BS 3059 Part 2 tubes are intended for more severe boiler, superheater, and elevated-temperature pressure applications.
Which grades are available in BS 3059 Part 2 Tubes?
Common BS 3059 Part 2 tube grades include Grade 360 and Grade 440, depending on the project specification. Buyers should confirm the required grade, size, wall thickness, and certificate requirements before ordering.
Are BS 3059 Part 2 Tubes suitable for high-temperature applications?
Yes. BS 3059 Part 2 tubes are designed for elevated-temperature service in boilers, superheaters, reheaters, heat exchangers, and steam lines. Final suitability depends on pressure, temperature, wall thickness, grade, and design code.
What certificates are supplied with BS 3059 Part 2 Tubes?
USA Piping Solution can supply BS 3059 Part 2 tubes with Mill Test Certificates, EN 10204 3.1 certificates, dimensional inspection reports, and third-party inspection documents on request.
What sizes are available for BS 3059 Part 2 Tubes?
BS 3059 Part 2 tubes are supplied in standard and project-specific outside diameters, wall thicknesses, and cut lengths. Custom dimensions can be offered based on stock, mill availability, and project specification.