Critical Bolts for Oil & Gas, Power, and Renewable Infrastructure
About us
AF Bolts is a specialist supplier of stud bolts and structural fasteners for oil & gas, power, and renewable energy infrastructure — serving clients who demand consistent quality and dependable lead times.
We supply exotic alloy stud bolts in Inconel 625, Inconel 718, Super Duplex 2507, Hastelloy C276, and Titanium Grade 5, alongside high-tensile structural bolting for heavy equipment, vessel skirts, wind turbine and solar installations, and structural steelwork.
Every enquiry is handled with a clear technical understanding of the application, the standard required, and the documentation your project needs. Every order comes with full material traceability and EN 10204 3.1 mill test certificates as standard.Our Services
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Nickel Alloy Stud Bolts
Inconel 625, Super Duplex 2507, Duplex 2205, and Hastelloy C276 stud bolts for flanges, pressure vessels, and critical piping in oil & gas and petrochemical projects. Supplied to ASTM A193 with full MTC documentation.
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Exotic Alloy Steel Fasteners
We supply exotic alloy steel fasteners for critical service applications. This includes Inconel, Hastelloy, Monel, Super Duplex, and Duplex grades with full material certification for oil & gas, refinery, and offshore projects.
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Anchor Bolts — Grade 8.8 / 8.9
High tensile anchor bolts for equipment foundations, vessel skirts, compressor bases, and structural steelwork. Available in L-type, J-type, and straight configurations, fabricated to project drawings.
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Inconel 625 Anchor Bolts
For equipment foundations in high-temperature and corrosive environments — refineries, offshore platforms, and LNG plants where carbon steel anchor bolts are not suitable.
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Duplex & Super Duplex Fasteners
Duplex 2205 and Super Duplex 2507 stud bolts and hex bolts for both offshore and onshore platforms. Available in ASTM A182 F51 and F53 with matching A194 heavy hex nuts.
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Thread Foundation Anchor Bolt
We supply Hastelloy C276, Hastelloy C22, and Monel 400 bolts, nuts, and stud bolts for highly corrosive service . Supplied with full EN 10204 3.1 certification and NACE MR0175 compliance.
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Structural Bolts
We supply heavy hex structural bolts to ASTM A325 and A490 for tower flanges, platform steelwork, pipe racks, and structural framing across solar, wind, and industrial construction projects.
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Project Supply and Documentation
We handle bulk project quantities with full documentation packages — EN 10204 3.1 / 3.2 MTCs, heat traceability, NACE MR0175 compliance, and ASME / ASTM standard confirmation.
Awards & Recognitions
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We are certified to ISO 9001, 14001, and 45001 standards for quality machining and production jobs.
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Most fastener suppliers list grades. We understand them — application limits, corrosion behaviour, NACE compliance, and which MTC your QC team will accept. That saves your procurement engineer three rounds of back and forth.
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We have manufactured and supplied anchor bolts and fasteners for solar/wind energy projects, contributing to renewable Industry.
Current & Previous Clients
