Your Trusted Stud Bolt Manufacturer and Supplier in UAE & GCC
Asia Bolts Industries LLC is a trusted fastener manufacturer and supplier based in Dubai, serving customers across the UAE and the wider GCC. Our stud bolts are made for oil and gas, petrochemical, refinery, power generation, marine and heavy engineering projects, where reliable flange connections matter most.
We supply fully threaded stud bolts with heavy hex nuts in a wide range of ASTM grades, sizes, finishes and coatings. Every order is backed by material test certificates and full traceability, so you can use our products with confidence in demanding environments.
What Are Stud Bolts?
A stud bolt is a threaded rod with threads along its full length (or on both ends) and no head. It is used with two nuts to clamp flanges, valves, pressure vessels, pumps and other equipment together. Stud bolts spread the load evenly, handle high pressure and extreme temperatures, and are easy to install and replace, which is why they are the standard choice for flanged joints in process industries.
Why Choose Asia Bolts for Stud Bolts?
Trusted GCC Supplier
Years of experience supplying fasteners to industrial and energy projects across the region.
Wide ASTM Range
High-tensile, low-temperature, stainless and high-alloy grades under one roof.
Custom Manufacturing
Studs made to your drawing, size, length and thread specification.
Certified Quality
Material Test Certificates (EN 10204 3.1 and 3.2 on request) with full heat-number traceability.
Complete Packages
Studs, nuts and washers supplied together, matched by grade.
Corrosion Protection
A full choice of coatings for offshore, marine and chemical environments.
Fast Delivery
Ready stock and quick dispatch across Dubai, the UAE and the GCC.
ASTM Stud Bolt Materials for Petrochemical Applications
We supply stud bolts and matching nuts in the following specifications.
ASTM A193
Alloy and Stainless Steel Bolting for High-Temperature and High-Pressure Service
| Grade | Description |
|---|---|
| ASTM A193 B7 | Chrome-moly alloy steel, high tensile |
| ASTM A193 B7M | Low-hardness grade for sour service |
| ASTM A193 B16 | High-temperature alloy steel |
| ASTM A193 B8 Class 1 & 2 | AISI 304 stainless steel |
| ASTM A193 B8M Class 1 & 2 | AISI 316 stainless steel |
| ASTM A193 B8T Class 1 & 2 | AISI 321 stainless steel |
| ASTM A193 B8C Class 1 & 2 | AISI 347 stainless steel |
| ASTM A193 B6 | AISI 410 stainless steel |
ASTM A194
Nuts for High-Pressure and High-Temperature Service
| Grade 2H | Grade 2HM | Grade 3 | Grade 6 |
| Grade 7 | Grade 7M | Grade 8 | Grade 8C |
| Grade 8T |
ASTM A320
Bolting for Low-Temperature Service
| L7 | L7M | B8 | B8F / B8FA |
| B8M / B8MA | L43 |
Other Specifications
| ASTM A453 Grade 660 (Classes A, B, C and D) | ASTM A540 B21, B22 and B23 |
Common Grade Pairings
Stud bolt matched with its nut and typical application
| Stud Bolt | Matching Nut | Typical Use |
|---|---|---|
| A193 B7 | A194 2H | General high-temperature and high-pressure flange service |
| A193 B7M | A194 2HM | Sour service (H₂S environments) |
| A193 B16 | A194 Grade 4 / 7 | Very high-temperature service |
| A193 B8 / B8M | A194 Grade 8 / 8M | Corrosive and chemical environments |
| A320 L7 | A194 Grade 4 / 7 | Low-temperature and cryogenic service |
Coatings and Surface Finishes
Choosing the right coating extends service life and protects against corrosion, galling and chemical attack. We offer:
Zinc Plating
Zinc Nickel
Nickel Plating
Hot Dip Galvanising
PTFE — Xylan / Xylar / Teflon
Phosphate (Mg / Zn)
Sherardising
Cadmium Plating
Zinc Flake
Silver Plating
Dry Film Lubricants
Molykote
Not sure which coating suits your application? Our team will recommend the best option based on your operating environment, temperature and media.
Industries We Serve
Oil & Gas (Upstream, Midstream, Downstream)
Petrochemical & Chemical Plants
Refineries
Power Generation & Desalination
Offshore & Marine
Construction & Infrastructure
Pipelines, Valves & Pressure Vessels
Quality and Certification
All stud bolts are manufactured and inspected to the relevant ASTM standards. Documentation available on request includes:
- Mill / Material Test Certificates (EN 10204 3.1 / 3.2)
- Dimensional and thread inspection reports
- Heat number traceability
- Third-party inspection support
Frequently Asked Questions
What is the difference between ASTM A193 B7 and B7M?
B7 is the standard high-strength alloy steel stud grade. B7M has a lower hardness and strength limit, making it suitable for sour service where resistance to sulphide stress cracking is required.
Which stud bolt grade is best for low-temperature service?
ASTM A320 L7 (with A194 Grade 4 or 7 nuts) is commonly specified for low-temperature and cryogenic applications.
Which stud bolts are best for corrosive environments?
Stainless steel grades such as A193 B8M (AISI 316), or carbon and alloy studs with PTFE, Xylan or zinc-nickel coatings, perform well in corrosive and marine conditions.
Can you make stud bolts to custom lengths and sizes?
Yes. We manufacture studs to your drawing or specification, including special lengths, thread pitches and materials.
Do you supply certificates with your stud bolts?
Yes. Material test certificates and traceability documents are supplied with every order.
Do you deliver across the GCC?
Yes. We supply Dubai, the rest of the UAE, Saudi Arabia, Oman, Qatar, Kuwait and Bahrain, Iraq, Jordan, Afghanistan, Africa, Asia, Europe.
Need Stud Bolts for Your Next Project?
Custom sizes, certified quality and fast delivery across the GCC. Get a quote today.
Request a Quote