Stud Bolts – ASTM A193 Grade B7
High-Strength Fasteners for Industrial Applications
Our ASTM A193 Grade B7 Stud Bolts are precision-engineered, high-tensile fasteners designed to meet the rigorous demands of the oil & gas, petrochemical, power generation, and heavy industrial sectors. Manufactured from quenched and tempered alloy steel, these stud bolts provide exceptional strength, durability, and heat resistance, making them the preferred choice for flanges, valves, pipelines, and pressure vessels.
High-Tensile Alloy Steel: Manufactured from chromium-molybdenum steel for superior strength.
Quenched & Tempered: Heat-treated for enhanced hardness and durability.
Excellent Heat Resistance: Performs reliably in high-temperature environments.
Precision Threading: Available in UNC, UNF, and metric thread forms for secure connections.
Global Standards Compliance: Conforms to ASTM A193 and ASME standards.
Specification | Details |
|---|---|
Standard | ASTM A193 / ASME SA193 |
Grade | B7 (Alloy Steel) |
Material | Chromium-Molybdenum Steel |
Tensile Strength | ≥ 125 ksi (860 MPa) |
Yield Strength | ≥ 105 ksi (720 MPa) |
Hardness | 248–341 BHN |
Sizes Available | ½" to 4" (M12 to M100) |
Threads | UNC, UNF, Metric (Custom options available) |
Lengths | Custom cut-to-length available |
Finish | Black Oxide, PTFE Coated, Zinc Plated, HDG |
Flanged connections in oil & gas pipelines
Securing valves, pumps, and compressors
Petrochemical and chemical plants
Power generation plants (steam, thermal, nuclear)
Pressure vessels and boilers
High-temperature and high-pressure bolting environments
✅ Exceptional Strength & Durability for critical applications
✅ Heat & Pressure Resistance for reliable performance in harsh conditions
✅ Available in Bulk & Custom Sizes to suit project needs
✅ International Standard Compliance ensures trust and reliability
✅ Fast Delivery Across UAE – including Dubai, Abu Dhabi, Sharjah
Q: What makes ASTM A193 B7 different from other grades?
A: Grade B7 is specifically heat-treated alloy steel, providing superior tensile strength and performance in high-temperature, high-pressure environments.
Q: Can B7 stud bolts be used in corrosive environments?
A: While B7 offers strength, for highly corrosive environments, stainless steel (e.g., ASTM A193 B8) may be more suitable unless coated.
Q: Do you supply nuts and washers with the bolts?
A: Yes, we supply matching ASTM A194 Grade 2H heavy hex nuts and hardened washers upon request.
Q: Are custom coatings available?
A: Yes, PTFE, zinc, hot-dip galvanized, and other coatings are available for enhanced corrosion resistance.