Premier Manufacturer & Exporter of High-Tensile Stud Bolts in India
Stud Bolt India is an ISO 9001:2015 certified manufacturer, stockist, and global exporter of high-grade industrial stud bolts headquartered in Mumbai, India. We produce precision-engineered Tap End Stud Bolts, Double End Threaded Studs, Flange Bolting Studs, and Fully Threaded Stud Rods for extreme-pressure and high-temperature environments in oil refineries, petrochemical plants, offshore drilling platforms, and power generation facilities.
Our industrial stud bolts are manufactured strictly in compliance with international standards including ASTM A193 (Grades B7, B7M, B16, B8, B8M), ASTM A320 (Grade L7, L7M, L43), ASTM A453 (Grade 660), as well as duplex, super duplex, and nickel alloy specifications. Every product batch undergoes rigorous mechanical testing and non-destructive examination (NDE) to guarantee maximum tensile strength and zero-defect execution under severe joint stress.
Complete Range of Industrial Stud Bolt Types
We supply a versatile lineup of stud bolts engineered for high-pressure piping assemblies, pressure vessel connections, and structural steel jointing:
Tap End Stud Bolts
Double End Threaded Stud Bolt
Flange Bolting Stud Bolt
Reduced Shank Stud Bolt
Full Threaded Stud Bolt
Duplex Steel High-Pressure Stud Bolts
Weld Stud Bolt
Inconel Alloy Stud Bolts
Technical Specifications & Standards
Engineering buyers and procurement departments can reference our standard manufacturing capabilities below. Custom sizes, non-standard thread pitches, and special lengths are produced directly to client engineering drawings.
| Parameter | Manufacturing Standard & Specification |
| Dimensional Standards | ASME B18.31.2, ASME B16.5, DIN 975, DIN 976, DIN 938, DIN 939, BS 4439 |
| Size Range | Imperial: 1/4" to 4" (UNC, 8-UN, UNF) | Metric: M6 to M100 (Coarse & Fine Pitch) |
| Length Capability | 10 mm up to 3000 mm (Custom cut lengths available) |
| High Tensile Alloy Steel | ASTM A193 Grade B7, B7M, B16; ASTM A320 Grade L7, L7M, L43 |
| Stainless Steel Grades | ASTM A193 B8 (SS 304), B8M (SS 316), B8T (SS 321), B8C (SS 347) - Class 1 & Strain Hardened Class 2 |
| Duplex & Super Duplex | UNS S31803 / S32205 (Duplex 2205), UNS S32750 (Super Duplex 2507), UNS S32760 (Zeron 100) |
| Nickel Alloy Grades | Inconel 600, 625, 718; Monel 400, K-500; Hastelloy C276, C22; Titanium Grade 2 & 5 |
| Surface Protective Coatings | Xylan / PTFE Fluoropolymer Coated, Hot-Dip Galvanized (HDG), Electro-Zinc, Zinc-Nickel, Cadmium Plating |
| Quality Documentation | EN 10204 3.1 Material Test Certificate, PMI Reports, Hardness & NDT Inspection Reports |
Quality Assurance & Global Export Standards
Every order processed at Stud Bolt India undergoes systematic Quality Assurance. Raw materials are sourced exclusively from Tier-1 mills with verified melt reports. Incoming raw stock undergoes Positive Material Identification (PMI) chemical testing prior to cold forming, hot forging, and CNC thread rolling.
To ensure total reliability in severe marine, subsea, and acidic environments, our stud bolts undergo hydrostatic testing, Charpy V-notch impact testing (for low-temperature A320 L7 grades), thread pitch micro-gauge inspection, and salt-spray corrosion resistance evaluation.
Seaworthy Packaging & Worldwide Delivery Logistics
Export orders are packaged in compliance with international sea-freight and air-cargo guidelines to avoid physical damage and oxidation during transit:
Heavy-Duty Wooden Crates VCI Anti-Corrosion Shrink Packaging Individual Thread Protection End Caps Custom Barcode & Heat Code Labeling Palletized Export Crating
Global Supply Footprint
We regularly export high-tensile and stainless steel stud bolts to engineering contractors, EPC firms, and stockists across major industrial hubs, including:
United Arab Emirates (Dubai, Abu Dhabi, Sharjah) Saudi Arabia (Riyadh, Jubail, Yanbu) State of Qatar State of Kuwait Sultanate of Oman United States of America United Kingdom & Germany Singapore & Malaysia Australia & South Korea
