A193 B7 Alloy Steel Black Oxide Stud Bolt ASME B18.31.1
A193 B7 alloy steel black oxide stud bolt ASME B18.31.1 is a high-strength fastening component designed for heavy-duty industrial applications requiring excellent mechanical performance, reliable clamping force, and long-term service stability. The A193 B7 alloy steel black oxide stud bolt ASME B18.31.1 is manufactured from ASTM A193 Grade B7 alloy steel with a black oxide surface treatment, providing high tensile strength and improved surface protection.
The A193 B7 alloy steel black oxide stud bolt ASME B18.31.1 is widely used in petrochemical equipment, pressure vessels, pipelines, power plants, machinery, and industrial construction projects where high-strength bolting solutions are required.
Product Overview
The A193 B7 alloy steel black oxide stud bolt ASME B18.31.1 is a fully threaded or double-end threaded fastening component designed for high-pressure and high-temperature applications. ASTM A193 B7 specifies the alloy steel material requirements commonly used for pressure and temperature service bolting.
The black oxide finish provides a uniform dark surface appearance and offers basic corrosion protection for indoor and controlled environments. The A193 B7 alloy steel black oxide stud bolt ASME B18.31.1 provides strong mechanical performance and stable clamping force when combined with suitable nuts and washers.
This stud bolt is commonly selected by engineering contractors, equipment manufacturers, maintenance companies, and industrial distributors.
Product Specifications
| Item | Description |
|---|---|
| Standard | ASME B18.31.1 |
| Material Grade | ASTM A193 B7 Alloy Steel |
| Product Name | Black Oxide Stud Bolt |
| Material | Chromium-Molybdenum Alloy Steel |
| Thread Type | Fully Threaded / Double End Threaded |
| Thread Standard | ASME B1.1 UNC / UNF / Customized |
| Diameter Range | According to Standard Requirement |
| Length Range | Customized According to Application |
| Thread Direction | Right Hand / Customized |
| Surface Finish | Black Oxide |
| Strength Grade | ASTM A193 B7 |
| Packaging | Bundle / Carton / OEM Packaging |
| Customization | Length, thread, coating available |
Technical Parameters
| Parameter | Value |
|---|---|
| Material | ASTM A193 B7 Alloy Steel |
| Tensile Strength | Minimum according to ASTM A193 B7 requirements |
| Yield Strength | Minimum according to ASTM A193 B7 requirements |
| Hardness | According to ASTM A193 B7 Specification |
| Heat Resistance | Suitable for elevated temperature applications |
| Corrosion Resistance | Improved by surface treatment |
| Mechanical Performance | High Strength |
| Manufacturing Standard | ASTM A193 / ASME B18.31.1 |
Materials and Manufacturing Process
The A193 B7 alloy steel black oxide stud bolt ASME B18.31.1 is manufactured through controlled forging, machining, heat treatment, and finishing processes to ensure reliable mechanical performance.
- Raw material selection: ASTM A193 B7 chromium-molybdenum alloy steel
- Material inspection: Chemical composition verification
- Cutting and forming: Preparation of stud bolt blanks
- Thread rolling or machining: Produces accurate thread profiles
- Heat treatment: Quenching and tempering to achieve required mechanical properties
- Black oxide treatment: Provides uniform surface finish and basic protection
- Inspection: Thread gauge testing, dimensional inspection, and mechanical testing
- Packaging: Protective industrial packaging for transportation
Each A193 B7 alloy steel black oxide stud bolt ASME B18.31.1 is manufactured under strict quality control for industrial reliability.
Applications of the Product
The A193 B7 alloy steel black oxide stud bolt ASME B18.31.1 is widely used in high-strength fastening applications:
- Petrochemical industry: Flanges, pipelines, and pressure equipment
- Chemical processing: Industrial reactors and process systems
- Power generation: Boilers, turbines, and energy equipment
- Oil and gas industry: High-pressure equipment connections
- Construction industry: Heavy structural fastening
- Machinery manufacturing: Large equipment assemblies
- Pressure vessels: Critical bolted joints
- Industrial maintenance: Replacement fastening applications
Its high-strength alloy steel construction makes it suitable for demanding industrial environments.
Why Choose This Product
- ASTM A193 B7 alloy steel material
- High tensile strength and load capacity
- Suitable for high-temperature service
- Stable clamping performance
- ASME dimensional compatibility
- Black oxide finish for consistent appearance
- Reliable thread accuracy
- Suitable for pressure equipment applications
- OEM customization support
The A193 B7 alloy steel black oxide stud bolt ASME B18.31.1 provides a dependable fastening solution for critical industrial connections.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and customized fastening solutions.
- Experience with high-strength industrial bolts and studs
- Support for ASTM and ASME standard fasteners
- Advanced heat treatment and thread processing capability
- OEM/ODM customization support
- Stable manufacturing capacity for bulk orders
- Strict quality inspection procedures
- Global export experience
- Engineering support for special fastening requirements
Flybear provides reliable fastening products for petrochemical, energy, machinery, and industrial customers worldwide.
Quality Inspection and Control
Quality assurance is maintained throughout production:
- Alloy steel chemical composition analysis
- Raw material certificate verification
- Heat treatment process inspection
- Tensile strength testing
- Hardness testing
- Thread gauge inspection
- Dimensional accuracy inspection
- Surface finish inspection
- Packaging quality inspection
All manufacturing processes follow ISO-based quality management systems to ensure consistent product reliability.
Selection Guide
When selecting an A193 B7 alloy steel black oxide stud bolt ASME B18.31.1, consider:
- Required diameter and length
- Operating temperature conditions
- Pressure rating requirements
- Thread standard compatibility
- Nut and washer matching requirements
- Corrosion protection needs
Proper selection ensures safe fastening performance and long service life in industrial applications.
FAQ
1. What is A193 B7 stud bolt used for?
It is used for high-strength bolted connections in pressure vessels, pipelines, and industrial equipment.
2. What material is ASTM A193 B7?
ASTM A193 B7 is a chromium-molybdenum alloy steel grade designed for high-temperature bolting applications.
3. What is the purpose of black oxide treatment?
Black oxide provides a uniform surface finish and improves basic corrosion protection.
4. Can A193 B7 stud bolts be customized?
Yes, Flybear supports customized lengths, thread standards, coatings, and packaging.
5. What industries use A193 B7 stud bolts?
They are commonly used in petrochemical, oil and gas, power generation, chemical, and heavy industrial applications.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
Contact us for quotation, customization, and technical support via Contact Us.
