ASTM A193 Gr B7 Bolts Manufacturer, Supplier & Exporter in India
What are ASTM A193 Gr B7 Bolts?
ASTM A193 Gr B7 Bolts are high-strength alloy steel fasteners manufactured from chromium-molybdenum steel and heat treated through quenching and tempering to achieve superior tensile strength, hardness, and durability. These fasteners are widely used in high-pressure and high-temperature applications such as petrochemical plants, oil & gas pipelines, power generation, pressure vessels, heat exchangers, and industrial flanges. They are commonly available as ASTM A193 GR.B7 Full Thread Studs, ASTM A193 Grade B7 Hex Bolts & Threaded Rods, B7 threaded rod, and ASME SA193 B7 bolts, typically paired with ASTM A194 Grade 2H heavy hex nuts for secure bolted joints.
ASTM A193 Grade B7 Bolts Manufacturer, Supplier & Exporter
When industries require reliable fastening solutions capable of withstanding elevated temperatures, high pressure, and demanding mechanical loads, ASTM A193 Grade B7 Bolts are among the most trusted choices worldwide. Manufactured from premium chromium-molybdenum alloy steel and subjected to precise heat treatment, these fasteners deliver exceptional tensile strength, fatigue resistance, and long-term performance in critical industrial applications.
We supply a comprehensive range of ASTM A193 B7 bolts in multiple sizes, thread configurations, coatings, and pressure ratings to meet the requirements of industries across India and international markets. Whether your project requires SA 193 B7 Stud, ASTM A193 GR.B7 Full Thread Studs, ASTM A193 Grade B7 Hex Bolts & Threaded Rods, or B7 threaded rod, every product is manufactured in accordance with ASTM and ASME standards to ensure dimensional accuracy, mechanical integrity, and dependable service life.
Our fastening solutions are widely used for connecting pressure vessels, flanges, valves, pumps, heat exchangers, boilers, structural assemblies, and heavy industrial equipment operating in challenging environments.
Why Choose Our ASTM A193 B7 Bolts?
Selecting the correct high-strength fastener is essential for ensuring equipment safety and operational reliability. Our ASME SA193 B7 bolts are manufactured under stringent quality control procedures using certified raw materials and are thoroughly inspected before dispatch.
Our advantages include:
- Manufactured according to ASTM A193 and ASME SA193 specifications
- Available in metric and imperial sizes
- High tensile and yield strength for demanding applications
- Excellent resistance to mechanical stress and fatigue
- Uniform heat treatment for consistent hardness
- Precision-machined threads for secure installation
- Available with plain, black oxide, zinc-coated, PTFE-coated, and Hot dip galvanized (HDG) B7 stud bolts finishes
- Supplied together with compatible ASTM A194 Grade 2H heavy hex nuts
- Fast delivery schedules for domestic and export orders
- Full material traceability with inspection documentation available upon request
With years of experience supplying industrial fasteners, we understand the performance expectations of engineering, EPC, fabrication, refinery, and power generation projects.
What Are ASTM A193 Gr B7 Bolts?
ASTM A193 Gr B7 Bolts are alloy steel fasteners produced from chromium-molybdenum steel that has been quenched and tempered to achieve superior mechanical properties. The ASTM A193 specification covers alloy and stainless steel bolting materials intended for pressure vessels, valves, flanges, fittings, and other high-temperature or high-pressure service applications.
Grade B7 is one of the most commonly specified grades due to its excellent balance of strength, toughness, and reliability. Compared to standard carbon steel fasteners, ASTM A193 Grade B7 fasteners provide significantly greater tensile strength and better resistance to deformation under heavy loads.
Typical product forms include:
- ASTM A193 Grade B7 Hex Bolts
- ASTM A193 GR.B7 Full Thread Studs
- SA 193 B7 Stud
- Double-End Stud Bolts
- Tap-End Studs
- Heavy Hex Bolts
- Fully Threaded Rods
- B7 threaded rod
- Custom-machined fasteners
These products are generally used with ASTM A194 Grade 2H heavy hex nuts, providing a secure fastening system suitable for pressure-retaining joints.
Key Features of ASTM A193 Grade B7 Fasteners
The popularity of ASTM A193 Grade B7 fasteners comes from their ability to maintain mechanical strength under severe operating conditions. Their alloy composition and controlled heat treatment make them suitable for industries where failure is not an option.
Major Features
- High tensile strength
- Excellent yield strength
- Outstanding fatigue resistance
- Superior load-bearing capability
- Excellent dimensional stability
- Good impact toughness
- Reliable performance under elevated temperatures
- Easy compatibility with industrial flange systems
- Long service life with minimal maintenance
- Available in multiple coatings including Hot dip galvanized (HDG) B7 stud bolts for enhanced corrosion protection
Applications of ASTM A193 Gr B7 Bolts
Because of their exceptional mechanical properties, ASTM A193 B7 bolts are widely used across numerous industrial sectors where high-strength fastening solutions are essential.
Industries Served
- Oil & Gas Processing Plants
- Petrochemical Industries
- Chemical Processing Plants
- Power Generation Stations
- Thermal Power Plants
- Nuclear Facilities
- Offshore Platforms
- Marine Engineering
- Pressure Vessel Manufacturing
- Heat Exchanger Fabrication
- Boiler Manufacturing
- Pipeline Construction
- Refineries
- LNG and LPG Projects
- Heavy Engineering Equipment
- Structural Steel Projects
- Cement Plants
- Mining Industry
- Water Treatment Facilities
- Industrial Valve Manufacturing
Their ability to perform reliably under fluctuating pressure and temperature conditions makes ASME SA193 B7 bolts a preferred fastening solution for safety-critical installations.
Types of ASTM A193 Grade B7 Fasteners We Supply
We offer a comprehensive range of ASTM A193 Grade B7 fasteners to meet the requirements of diverse industrial projects.
Available Products
- ASTM A193 Grade B7 Hex Bolts
- ASTM A193 GR.B7 Full Thread Studs
- SA 193 B7 Stud
- Double-End Stud Bolts
- Tap-End Studs
- Heavy Hex Bolts
- Fully Threaded Rods
- B7 threaded rod
- Socket Head Bolts
- Hex Head Cap Screws
- Anchor Bolts
- U-Bolts
- Eye Bolts
- Custom CNC-Machined Fasteners
Every product is manufactured with strict dimensional tolerances, tested for quality, and supplied with complete inspection documentation to meet the needs of EPC contractors, OEMs, fabricators, and industrial maintenance teams.
ASTM A193 Grade B7 Bolts Specifications
| Specification | Details |
| Product Name | ASTM A193 Gr B7 Bolts |
| Standard | ASTM A193 / ASME SA193 |
| Grade | B7 |
| Material | Chromium-Molybdenum Alloy Steel |
| Product Types | Hex Bolts, Heavy Hex Bolts, Stud Bolts, Full Thread Studs, Threaded Rods |
| Thread Type | UNC, UNF, Metric, BSW |
| Bolt Diameter | ¼” to 4″ (Custom sizes available) |
| Length | Up to 6 meters for threaded rods |
| Finish | Plain, Black Oxide, Zinc Plated, PTFE Coated, Cadmium Coated, Hot dip galvanized (HDG) B7 stud bolts |
| Heat Treatment | Quenched and Tempered |
| Compatible Nuts | ASTM A194 Grade 2H Heavy Hex Nuts |
| Testing | Mechanical, Chemical, Hardness, Dimensional, PMI, Third-Party Inspection |
| Certifications | EN 10204 3.1, Mill Test Certificate (MTC), Third-Party Inspection |
| Packaging | Wooden Boxes, Export Packing, Pallets, Bubble Wrapped, Waterproof Packing |
ASTM A193 B7 Chemical Composition
| Element | Composition (%) |
| Carbon (C) | 0.37 – 0.49 |
| Manganese (Mn) | 0.65 – 1.10 |
| Phosphorus (P) | 0.035 Max |
| Sulfur (S) | 0.040 Max |
| Silicon (Si) | 0.15 – 0.35 |
| Chromium (Cr) | 0.75 – 1.20 |
| Molybdenum (Mo) | 0.15 – 0.25 |
This balanced composition enables ASTM A193 Grade B7 fasteners to deliver consistent performance in high-pressure piping systems, flanged joints, boilers, and pressure vessels.
Mechanical Properties of ASTM A193 Grade B7 Bolts
| Property | Value |
| Tensile Strength | 125 ksi (860 MPa) Min |
| Yield Strength | 105 ksi (720 MPa) Min |
| Elongation | 16% Min |
| Reduction of Area | 50% Min |
| Hardness | 24–35 HRC |
A193 B7 Bolt Dimensions Chart
| Nominal Diameter | Thread Pitch (UNC) | Across Flats (Hex) |
| 1/4″ | 20 TPI | 7/16″ |
| 3/8″ | 16 TPI | 9/16″ |
| 1/2″ | 13 TPI | 3/4″ |
| 5/8″ | 11 TPI | 15/16″ |
| 3/4″ | 10 TPI | 1-1/8″ |
| 7/8″ | 9 TPI | 1-5/16″ |
| 1″ | 8 TPI | 1-1/2″ |
| 1-1/4″ | 7 TPI | 1-7/8″ |
| 1-1/2″ | 6 TPI | 2-1/4″ |
| 2″ | 4.5 TPI | 3″ |
A193 B7 Stud Bolt Torque Chart
| Bolt Size | Recommended Torque (Nm) |
| 1/2″ | 110 |
| 5/8″ | 220 |
| 3/4″ | 390 |
| 7/8″ | 620 |
| 1″ | 920 |
| 1-1/8″ | 1,260 |
| 1-1/4″ | 1,760 |
| 1-3/8″ | 2,350 |
| 1-1/2″ | 3,050 |
ASTM A193 B7 Stud Bolt Price List
The ASTM A193 B7 stud bolt price list depends on several technical and commercial factors rather than a single fixed rate. Since project requirements vary, prices are generally provided against detailed inquiries.
Factors Affecting Price
- Bolt diameter and length
- Quantity ordered
- Thread type (UNC, UNF, Metric)
- Surface finish or coating
- Plain or Hot dip galvanized (HDG) B7 stud bolts
- Packaging requirements
- Inspection and testing requirements
- Export destination
- Raw material market conditions
We provide competitive pricing for bulk orders while maintaining strict quality standards. Our sales team can prepare customized quotations based on your project specifications, drawings, or bill of materials.
Why Customers Choose Us for ASTM A193 Gr B7 Bolts?
Choosing the right supplier is as important as selecting the correct fastener grade. We focus on delivering quality products, dependable service, and technical support to help customers meet project deadlines.
Why Work With Us?
- Wide range of ASTM A193 Grade B7 Bolts in stock
- Custom manufacturing according to drawings
- Competitive pricing for domestic and export markets
- Strict adherence to ASTM and ASME standards
- Certified raw materials
- Complete quality documentation
- Fast delivery schedules
- Technical assistance for material selection
- Reliable packaging for international shipments
- Dedicated customer support from inquiry to delivery
Our commitment to quality and consistency has made us a trusted supplier for EPC contractors, fabricators, OEMs, and industrial maintenance companies.
Related Alloy Steel Fasteners Grades
- ASTM A193 Alloy Steel Fasteners
- ASTM A193 Grade B7 Fasteners
- ASTM A194 Alloy Steel Nuts
- ASTM A320 Alloy Steel Fasteners
- ASTM F468 Alloy Steel Bolts and Studs
- ASTM A325 Alloy Steel Structural Bolts
- ASTM A490 Alloy Steel Structural Bolts
- ASTM F568M Alloy Steel Fasteners
- ASTM A354 Alloy Steel Bolts and Studs
- ASTM F1554 Alloy Steel Anchor Bolts
- ASTM F3125 Alloy Steel Bolts
Request a Quote for ASTM A193 Grade B7 Bolts
Looking for high-quality ASTM A193 Gr B7 Bolts, ASTM A193 GR.B7 Full Thread Studs, SA 193 B7 Stud, ASTM A193 Grade B7 Hex Bolts & Threaded Rods, or B7 threaded rod for your next project?
We supply precision-manufactured fasteners in standard and custom sizes, backed by quality certifications, competitive pricing, and dependable delivery. Whether you require a small maintenance order or bulk quantities for a large industrial project, our team is ready to assist with product selection, technical specifications, and prompt quotations.
Contact us today to discuss your requirements and receive a customized quote for ASTM A193 B7 bolts that meet your exact application needs.
Global Reach
ASC LLP boasts a robust global presence and is committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality ASTM A193 Gr B7 Bolts. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
