ASTM A193 Grade B16 studs are fasteners made of heat-resistant alloy steel, designed for systems operating under high temperature and pressure. B16 Although it has a high strength of class B7, it shows superior performance by maintaining its mechanical properties at temperatures up to 538 °C (1000 °F).
It is used in industrial applications such as oil and natural gas plants, steam turbines, high temperature boilers to ensure long life and safe connection.
| Feature | |
| Standard | ASME |
| Material | Alloy Steel |
| Type | Stud Bolt |
| Quality | ASTM A 193 GR B16 |
| Coating | Electrogalvanized (White/Yellow), Hot-Dip Galvanized (HDG), Nickel, Black Oxide, Geomet, PTFE |
| Tooth Type | Metric Coarse Thread, Metric Fine Thread – UNC / UNF (Inch) |
| Measurement Range | From M10 to M80, 1/2″-3″ |
| Production Method | Grinding or machining |
| Thread Direction | Right-Hand Thread (standard) / Left-Hand Thread (upon request) |
- Petrochemical and refinery equipment
- High temperature steam boilers
- Pressure vessel connections
- Power plants and turbine systems
- Flange connections
- Valves and assemblies exposed to high temperatures
- ISO 9001:2015 Quality Management System
- ISO 14001:2015 Environmental Management System
- ISO 45001:2018 Occupational Health and Safety Management System
- EU Declaration of Conformity (PED) certificate (Compliance with the Pressure Equipment Directive)
- Our production processes, DIN, EN, ISO, and ASTM is fully compliant with the standards
- Upon request EN 10204 3.1 certificate is provided
No. B16 studs are resistant to high temperature and pressure, but low corrosion resistance. Not for use in corrosive environments such as sea water.
It is generally preferred in steam lines, power plants and petrochemical plants operating under thermal expansion and high temperature loads.
It is not intrinsically stainless. However, protection against corrosion can be achieved with suitable coatings (e.g. black oxide, galvanized, HDG, PTFE).
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