Baroda has one of India’s most concentrated petrochemical manufacturing hubs. GAIL, IOCL, GNFC, and GSFC operate major refinery and fertiliser plants in the city’s industrial belt. Reliance Industries’ massive Dahej and Hazira complexes are within the supply radius. For anyone sourcing fasteners in this market. We Stainless Bolt Industries, are here to provide premium quality of fastener. We manufacture and supply SS hex bolts, nuts, and screws in SS 304 and SS 316 to buyers across Vadodara, Ankleshwar, Bharuch, Dahej, and the Gujarat chemical corridor. Bulk supply to petrochemical projects, certified material for process plant maintenance, and general industrial fasteners for the city’s broader engineering sector.
SS Hex Bolts in Baroda
Petrochemical plant turn around maintenance at GAIL and GNFC, flange connection bolting at Dahej LNG terminal, and structural bolting across GIDC estate construction are the primary hex bolt applications in this market. ASTM A193 B8M in SS 316 for all process industry flanged connections; SS 304 DIN 933 for general engineering and structural applications.
Available Types:
- Fully threaded hex bolts
- Partially threaded hex bolts (hex cap screws)
- Heavy hex bolts for structural and process applications
Sizes and Standards:
Sizes: M6 to M100 (metric) | 1/4″ to 4″ (inch)
Standards: ASTM A193, DIN 933, DIN 931, ISO 4014, ISO 4017
SS Hex Nuts in Baroda
Heavy hex nuts certified to ASTM A194 8M are among the most requested products in the Vadodara market, given the petrochemical plant concentration. Matched-grade nuts are essential for certified flange assemblies. For general engineering in GIDC units, standard DIN 934 hex nuts in 304 and 316 cover most applications.
Available Types:
- Standard hex nuts (DIN 934 / ISO 4032)
- Heavy hex nuts (ASTM A194)
- Coupling nuts
- Nylon insert lock nuts (SS hex nyloc)
- Flange nuts
Size Range and Standards:
Sizes: M4 to M100 | 1/4″ to 4″
Standards: ASTM A194 2H & 8M, DIN 934, ISO 4032
SS Screws in Baroda
HVAC contractors working on Vadodara’s commercial and industrial construction use SS 304 self-tapping screws in significant volumes.
Chemical plant instrument enclosures and electrical panels in process areas use SS 316 machine screws for corrosion resistance. Food processing units in Halol and Anand specify SS 316 machine screws.
- Self-tapping screws (pan head, countersunk, hex washer head)
- Machine screws (pan, CSK, round head Phillips and slotted)
- Hex head self-drilling screws (tek screws)
- Socket cap screws (Allen screws)
- Set screws (grub screws)
Size Range and Standards:
Sizes: M3 to M20 | #6 to 3/4″ (inch)
Standards: DIN 7981, DIN 965, DIN 912, ISO 1481
SS 304 vs SS 316 Fasteners
| Feature | SS 304 Fasteners | SS 316 Fasteners |
| Composition | 18% Chromium, 8% Nickel | 16% Cr, 10% Ni, 2% Molybdenum |
| Process Chemical Resistance | Limited — not for chemical process lines | Required for Baroda petrochemical applications |
| Cost | Lower | Approx. 20–30% higher than 304 |
| Best for Baroda | General engineering, HVAC, structural | Petrochemical flanges, fertilizer plants, chemical GIDC units |
Applications across Baroda's Key Sectors:
Petrochemical and Refinery: It turnaround maintenance and new project construction at Vadodara’s petrochemical plants require ASTM A193 B8M bolts and A194 8M heavy hex nuts for all flange connections. Plant turnarounds are time-critical; stock availability on common flange bolt sizes (M16, M20, M24, and M30) matters as much as certification.
Fertilizer and Chemical Plants: Fertilizer plants handling ammonia, uric acid, and related chemicals specify SS 316 for any fastener in process contact. Nandesari and Padra chemical estates host fine chemical manufacturers where similar chemical exposure conditions apply.
Ankleshwar Chemical Belt: Ankleshwar is one of India’s densest industrial chemical zones. Plants manufacturing dye intermediates, agrochemicals, and specialty chemicals routinely specify SS 316 for process equipment fasteners. We supply to Ankleshwar buyers with stock-ready dispatch from Vadodara routes.
LNG and Gas Infrastructure: the Dahej LNG terminal and associated pipeline infrastructure uses SS 316 stud bolts and heavy hex nuts for cryogenic and high-pressure service. Some applications in cryogenic service specify SS 316L for weld zone components available on request.
General Engineering: Vadodara’s GIDC engineering unit manufacturers of process equipment, heat exchangers, and industrial machinery use SS 304 and 316 hex bolts across a wide size range for equipment assembly. These are often regular, repeat purchase requirements tied to production schedules.
Why Baroda Buyers Choose Stainless Bolt Industries:
- ASTM A193 B8M and A194 8M stocked for petrochemical plant turnarounds
- EN 10204 3.1 MTCs as standard no delays on certification documentation
- Stock depth on M16, M20, M24, M30 SS 316 heavy hex bolts and nuts
- SS 316L available for cryogenic and weld-zone applications in Dahej
- Regular supply to GIDC units across Vadodara, Ankleshwar, and Bharuch belt
Technical Specifications
| Product | Grade 304 Standard | Grade 316 Standard |
|---|---|---|
| Hex Bolts | ASTM A193 B8 | ASTM A193 B8M |
| Hex Nuts | ASTM A194 Grade 8 | ASTM A194 Grade 8M |
| Screws | AISI 304 / DIN | AISI 316 / DIN |
Frequently Asked Questions
ASTM A193 B8M bolts (SS 316) with ASTM A194 8M heavy hex nuts, with EN 10204 3.1 MTCs and heat/lot numbers. These are the standard for flanged process line maintenance across the Vadodara petrochemical cluster.
Yes. We maintain stock on M16 to M30 SS 316 heavy hex bolts and matching ASTM A194 8M nuts for exactly this reason. Petrochemical plant turnarounds are time-bound, and we know that.
Yes. We supply regularly to Ankleshwar GIDC units. SS 316 hex bolts and nuts for chemical process applications are stocked and dispatched to Ankleshwar buyers with full ASTM documentation.