Explore our high-performance industrial fasteners, manufactured under rigorous quality control standards to serve critical oil & gas, infrastructure, and structural engineering applications across Riyadh and Saudi Arabia.
As the capital city of Saudi Arabia and the core engine of Saudi Vision 2030, Riyadh is undergoing an unprecedented infrastructure boom. From major municipal expansion projects such as the Diriyah Gate Development, King Salman Park, and the Qiddiya Entertainment City, to heavy industrial development across Riyadh’s Industrial Cities (MODON 1st, 2nd, and 3rd Industrial Zones), the requirement for structurally certified, high-tensile carbon steel fasteners has reached record volumes.
Carbon steel fasteners—encompassing heavy hex bolts, stud bolts, threaded rods, structural bolts, and heavy hex nuts—form the mechanical backbone of steel frame erections, high-pressure piping networks, water transmission lines from Gulf desalination plants, and renewable solar energy farms surrounding the Ar Riyad province. Securing these mega-structures requires fasteners engineered specifically to withstand extreme desert ambient temperatures exceeding 50°C, thermal cycling, intense UV exposure, and sand abrasion, while complying strictly with Saudi Standards, Metrology and Quality Organization (SASO) regulations and SABER certificate system mandates.
As a premier international manufacturer and exporter supplying the Riyadh market, our facility delivers fully certified carbon steel, alloy steel, and high-tensile bolting packages. Every export consignment destined for Riyadh construction sites or Aramco-contracted EPC projects is supplied with complete heat-number marking and mill test certificates conforming to EN 10204 3.1, ensuring 100% material verification from melt shop to jobsite delivery.
Carbon steel fasteners are grouped into distinct property classes and ASTM specifications based on chemical composition, heat treatment (quenching & tempering), yield strength, and impact toughness.
Grades: ASTM A307 (Grade A/B), ISO 898-1 Class 4.6 / 5.8 / 6.8
Utilized in general structural frame assemblies, light machinery mounting, and HVAC duct framing. Low carbon steel fasteners offer high ductility and ease of welding, making them economical choices for non-critical tension applications in Riyadh commercial developments.
Grades: ASTM A193 B7 / B7M, ASTM A325, ISO 898-1 Class 8.8 / 10.9
Medium carbon alloyed steel engineered for high stress and elevated pressure duty. ASTM A193 B7 stud bolts (chromium-molybdenum steel) undergo oil quenching and tempering to achieve minimum tensile strength of 125,000 PSI (860 MPa), serving as the gold standard for pressure vessel flanges and refinery piping in Saudi Arabia.
Grades: ASTM F3125 Grade A325 / A490, EN 14399 HV Sets
Designed specifically for friction-grip structural joints in heavy steel framing, high-rise towers, and airport terminal superstructures. ASTM A325 and A490 heavy hex bolts feature oversized heads to distribute heavy clamping loads evenly across structural steel beams.
| Specification / Standard | Material Category | Tensile Strength (Min) | Yield Strength (Min) | Primary Riyadh Industry Application |
|---|---|---|---|---|
| ASTM A193 Grade B7 | Cr-Mo Alloyed High Tensile Steel | 125,000 PSI (860 MPa) | 105,000 PSI (725 MPa) | Refinery Piping, Gas Processing, Pressure Flanges |
| ASTM A194 Grade 2H | Medium Carbon Heavy Hex Nut | Proof Load: 175,000 PSI | Hardness: 24 to 35 HRC | High Pressure Flange Bolting Assembly |
| ISO 898-1 Class 8.8 | Quenched & Tempered Medium Carbon | 800 MPa (116,000 PSI) | 640 MPa (92,800 PSI) | Commercial Steel Construction, Machinery Mounts |
| ISO 898-1 Class 10.9 | Alloyed Carbon Steel | 1040 MPa (150,000 PSI) | 940 MPa (136,000 PSI) | Heavy Plant Infrastructure, Pre-cast Concrete Framing |
| ASTM A325 / F3125 | Structural High Tensile Carbon Steel | 120,000 PSI (830 MPa) | 92,000 PSI (635 MPa) | Bridges, High-Rise Steel Frames, Warehouse Girders |
| ASTM A320 Grade L7 | Low-Temperature Cr-Mo Alloy Steel | 125,000 PSI (Charpy Tested) | 105,000 PSI | Cryogenic Gas Lines, Low Temp Pressure Vessels |
Our carbon steel fastening products are customized for the distinct engineering environments of the Central Province of Saudi Arabia.
Riyadh relies heavily on massive water conveyance pipelines pumping desalinated water hundreds of kilometers from Jubail and Ras Al-Khair on the Arabian Gulf coast. Pipeline connections and pump stations operated by the Saline Water Conversion Corporation (SWCC) demand carbon steel stud bolts (ASTM A193 B7) with heavy-duty anti-corrosion protective coatings to survive high soil salinity, aggressive groundwater conditions, and high-pressure fluid surge.
The expansion of the Riyadh Metro Rail Network, along with large-scale structural frames for the King Abdullah Financial District (KAFD) and New Murabba development, utilizes millions of ISO Class 8.8 and 10.9 high-tensile carbon steel structural bolts and ASTM A325 friction-grip sets. Fasteners must maintain precise torque retention despite ambient ground vibrations and intense solar thermal expansion.
Under Saudi Arabia’s National Renewable Energy Program (NREP), utility-scale solar PV installations in the Riyadh region (such as the Sudair and Al-Faisaliah solar projects) utilize hot-dip galvanized carbon steel bolts and self-drilling roofing/structural screws. Galvanized coatings exceeding 85 microns protect tracker torque tubes and mounting trusses against desert atmospheric weathering for over 25+ years.
Standard bare black carbon steel oxidizes rapidly when exposed to cyclic morning dew condensation followed by intense daytime heat. To prevent stress corrosion cracking (SCC), galling during torque-up, and galvanic degradation, we provide advanced industrial surface finishing options optimized for Saudi Arabian jobsite environments:
Immersion in molten zinc creates a metallurgically bonded multi-layer alloy shield. Provides superior abrasion resistance during structural erection and sacrificial protection against atmospheric moisture. Ideal for outdoor transmission towers, highway guardrails, and structural steelwork.
Applied over a zinc-nickel or phosphate base, PTFE fluoropolymer coatings deliver exceptional chemical inertness and extremely low friction coefficients (0.05 to 0.08). This prevents thread galling during high-torque tightening on hydrocarbon flanges and ensures effortless breakout during plant maintenance outages.
Zinc-Nickel (12-15% Ni) electroplating provides over 1,500 hours of neutral salt spray resistance (ASTM B117) without red rust formation. The smooth, precise layer preserves fine thread tolerances on precision machine screws and socket cap screws without requiring thread re-tapping.
Referencing our established track record as an ISO-certified manufacturer exporting to over 24 countries, we offer uncompromised technical rigor and logistically seamless export execution to Riyadh.
Every single bolt, stud, and nut is hard-stamped with material grade marks and unique heat lot numbers. Material test certificates per EN 10204 3.1 provide exact chemical ladle analysis and mechanical destructive testing results for full audit compliance.
Beyond standard ASME B16.5 and DIN dimensions, our in-house CNC lathe and thread-rolling lines produce non-standard stud lengths, special thread pitches (UNC, UNF, Metric pitch combinations), and custom stepped studs according to client engineering blueprints.
Our dedicated Middle East export desk handles full container loads (FCL) and consolidated shipments direct to Riyadh Dry Port or King Khalid International Airport (RUH), taking care of SABER Certificate of Conformity (CoC) filings to ensure rapid customs clearance.
Addressing key technical, regulatory, and commercial queries for buyers sourcing carbon steel fasteners in Riyadh, KSA.
Need certified ASTM A193 B7 stud bolts, A194 2H heavy hex nuts, or high-tensile structural carbon steel bolts in Riyadh? Contact our engineering sales desk for immediate pricing, MTRs, and SABER compliance support.