ASTM A193 Grade B7 Fasteners Manufacturers & Suppliers in India

ASTM A193 Grade B7 is a specification set by the American Society for Testing and Materials (ASTM) for high-strength, heat-treated alloy steel bolts, studs, and other threaded fasteners. These fasteners are commonly used in high-pressure and high-temperature service conditions, making them suitable for various industrial applications.

Types of ASTM A193 Grade B7 Fasteners:

Bolts: Hexagonal-headed bolts are a common type, and they are often used in conjunction with nuts.

Studs: Threaded rods without heads that are used to secure components in machinery or structures.

Screws: Threaded fasteners designed to be driven into materials, typically with a screwdriver or wrench.

Table Of Content

What is ASTM A193 Grade B7 Fasteners
ASTM A193 Grade B7 Fasteners Specifications
Types Of ASTM A193 Grade B7 Fasteners
Application Industries Of ASTM A193 Grade B7 Fasteners

Features of ASTM A193 Grade B7 Fasteners:

Material: Grade B7 fasteners are made from a chromium-molybdenum alloy steel, which undergoes heat treatment for enhanced strength and hardness.

Heat Treatment: These fasteners are subjected to quenching and tempering, resulting in a combination of high tensile strength, good ductility, and resistance to wear and fatigue.

Coating: The fasteners may be coated for corrosion resistance. Common coatings include zinc plating or hot-dip galvanizing.

Strength: ASTM A193 Grade B7 fasteners are known for their high tensile strength, making them suitable for applications where strong and reliable connections are required.

Applications of ASTM A193 Grade B7 Fasteners:

Petrochemical Industry: B7 fasteners are commonly used in the construction of pressure vessels, piping systems, and other equipment in the petrochemical industry.

Power Generation: These fasteners find applications in power plants, especially in components that are exposed to high temperatures and pressures.

Oil and Gas Industry: B7 fasteners are utilized in various equipment within the oil and gas sector, including valves, flanges, and wellhead components.

Construction: In heavy construction and infrastructure projects, Grade B7 fasteners may be used where high strength and durability are crucial.

Manufacturing and Machinery: B7 fasteners can be found in the manufacturing of machinery and equipment, providing secure and reliable connections in critical components.

Tricon Steel & Alloys is a distinguished name in the realm of industrial solutions, serving as a premier manufacturer and supplier of ASTM A193 Grade B7 Fasteners in Mumbai, India. Committed to excellence, we take pride in our position as industry leaders, leveraging high-quality raw materials and employing the latest technology to craft fasteners that meet stringent ASTM standards. Our relentless pursuit of quality is complemented by a commitment to competitive pricing, ensuring that our clients receive top-notch products without compromising their budgetary considerations. At Tricon Steel & Alloys, we stand as a testament to precision, reliability, and innovation in the fastener manufacturing industry.

ASTM A193 Grade B7 Fasteners Specifications

Standard	ASTM A193, A194 / ASME SA193, SA194
Bolt / Screw Size	M3 – M56 \| 3/6″ to 2″ \| Custom Sizes
Nuts Size	M3 – M56 \| 3/6″ to 2″ \| Custom Sizes
Washers Size	M3 – M56 \| 3/6″ to 2″ \| Custom Sizes
Machine Screws Size	M1.6 – M12
Self Tapping Screw Size	No.2 – No. 14
Length	3 mm to 200 mm
Threads	UNF, BSW, BSF, METRIC, UNC, or as required
Fasteners	DIN : DIN 934, DIN 931, DIN 970, DIN 933 UTS : UNEF, NPT, UNC, UNS, UNF, NPTF ISO : JIS standards, ISO 4033, ISO 4032, ANSI – American National Standards Institute ASME B18.5 ANSI B 28.2.4 1M as per defined in ASME B16.5 standard Stud Bolt length ANSI B 18.2.4 2M as per defined in ASME B18.2.2 Hex nuts
Form	Hex, Threading, Square, Round as per Gauge Etc.
Raw materials Source	JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin,etc.
Threads Configuration	ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Certification	Dual Certified As per ASTM & ASME Codes
Dimensions	DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Threads	Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically
Test Certificate	as per EN 10204 / 3.1 Manufacturer Test Certificate
Additional Certifications	PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Production Process	M24-M100: hot forging , M2-M24: Cold Froging, for custom-made connecting element machining and CNC
Types	Bolts, Nuts, Stud Bolts, Washers, Threaded Rod, Anchor Fasteners, Eye Bolt, Stud, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, Hexagon Castle Nuts, Hexagon Domed Cap Bolts, Hexagon Thin Nuts etc.

ASTM A193 Grade B7 Fasteners Manufacturing Process

Cold Forging

This initial process is a cold forging process used to produce a near net shape work billet. An important consideration in cold forging is the tendency for the bar tobolts Manufacturing Process buckle if its unsupported length to diameter ratio is too high. This ratio usually is limited to less than 4:1 but with suitable dies, therefore, cold forging is the most likely production method because bolts have a large head-to-shank ratio, they are longer than 1½ times their diameter, bolts have multiple diameters and finally require a geometrical shap

Thread rolling

The next process applied to the bottom of the work billet is a bulk deformation process known as "thread rolling". This type of cold-forging process is used bolts Manufacturing Processbecause cylindrical can easily have thread applied by rolling the work billet through two dies. The thread rolling process is usually chosen over machining because thread rolling provides higher production rates, more effective material usage, stronger thread due to work hardening and finally better fatigue resistance because the work billet undergoes compressive stresses during the rolling process.

Blackening and Galvanization

The final process induced on the now almost complete bolt is the application of an anti-corrosive layer, to stop oxidation. The usual process is called "blackening"; Either process chemically or physically coats the surface of ferrous metals, creating a strong barrier against humidity and corrosion. Hot Blackening is most popular & common blackening processes:

Hot Blackening

Hot blackening involves dipping the bolt into six different tanks. The bolt is usually "dipped" by automated part carriers for transportation between tanks. These tanks contain, in order, alkaline cleaner, water, caustic soda at 450°C to 500°C and finally the sealant, which is usually crude oil. The caustic soda bonds chemically to the surface of the metal, creating a porous base layer on the bolt.

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Types Of ASTM A193 Grade B7 Fasteners

Alloy Steel Gr B7 Bolt

ASTM A193 Grade B7 Nut

Chrome Moly Grade B7 Screws

ASME SA193 Grade B7 Washers

CrMo Gr B7 Stud Bolts

Alloy Steel B7 Anchor Bolts

Alloy Steel Gr B7 Studs

High Pressure Steel B7 Threaded Rod

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