A193 B7 Alloy Steel HDG Threaded Bars
Product Overview
A193 B7 Alloy Steel HDG Threaded Bars are high-strength threaded rods commonly used in harsh industrial environments, particularly where high tensile strength and corrosion resistance are essential. Manufactured using heat-treated chromium-molybdenum alloy steel (often referred to as B7 alloy), these threaded bars are hot-dip galvanized (HDG) to prevent rust and extend their life cycle. These bars are specifically designed for heavy-duty applications such as petrochemical plants, power generation systems, refineries, and other structural installations requiring pressure-bearing fasteners.
As a part of the ASTM A193 specification, these threaded bars meet strict requirements for mechanical properties and chemical composition, making them ideal for high-stress environments requiring reliable, durable fastening.
Product Specification Table
| Parameter | Details |
|---|---|
| Product Name | A193 B7 Alloy Steel Threaded Bars |
| Finish | Hot-Dip Galvanized (HDG) |
| Thread Type | UNC/UNF/Metric |
| Thread Length | Full or Partial, per customer request |
| Diameter Range | M6 to M64 / 1/4″ to 2-1/2″ |
| Length | 1 meter – 6 meters (customizable) |
| Standard Compliance | ASTM A193/B7, DIN 976, ISO |
| Packaging | Bundled or as per customer requirement |
| Availability | In stock and ready to ship |
Technical Parameters
| Property | Specification |
|---|---|
| Strength Grade | ASTM A193 B7 |
| Surface Treatment | Hot-dip Galvanized (HDG) |
| Standards Met | ASTM A193, DIN 976, ISO, ANSI |
| Certification | ISO 9001:2015, RoHS, CE, IATF16949 |
| Hardness Range | Up to 35 HRC |
| Tensile Strength | ≥ 860 MPa (depending on grade) |
| Yield Strength | ≥ 720 MPa (depending on grade) |
Material Composition and Manufacturing Process
The A193 B7 Alloy Steel HDG Threaded Bars are made from quenched and tempered chromium-molybdenum steel alloys. The preferred material choice in manufacturing is often grade B7 due to its excellent mechanical properties under high pressure and temperature.
Typically Used Raw Materials:
- Cr-Mo Alloy Steel (B7 Grade)
- 304/316 Stainless Steel for specialized orders
Production Workflow:
- Material Selection: Quality raw alloy steel or stainless steel is sourced.
- Cold Forming/Hot Forging: Based on bar diameter and length specifications.
- Heat Treatment: Quenching and tempering to achieve ASTM A193 B7 standards.
- Thread Rolling or Cutting: According to thread standards such as UNC or metric.
- Surface Treatment: Hot-dip galvanizing is applied for superior corrosion resistance.
- Quality Inspection: Performed at every stage using advanced equipment.
- Packaging & Delivery: Customized packaging available for global shipping needs.
Common Applications and Industries
The A193 B7 Alloy Steel HDG Threaded Bars are widely used in critical infrastructure owing to their tensile strength and resistance to external elements. Key industries and scenarios include:
- Oil & Gas Pipelines
- Petrochemical Plants
- Heavy Machinery Assembly
- Power Generation Facilities
- Marine and Offshore Platforms
- Bridge and Tunnel Construction
Their HDG coating makes them particularly suitable for applications requiring long-lasting outdoor performance.
Product Features and Competitive Advantages
Superior Material:
- Premium alloy steel ensures exceptional load-bearing capability.
- Corrosion-proof HDG finish enhances durability in corrosive environments.
Precision Engineering:
- Close tolerance threading enhances fit and reliability in assemblies.
- Available in both metric and imperial standards for global compatibility.
Robust Production & Logistics:
- In-house production provides tight quality control and customization flexibility.
- Flybear Fastener maintains abundant inventory ensuring timely delivery.
Custom Capabilities:
- Thread length, diameter, and surface coatings can be tailored based on customer requirements.
- OEM and ODM services available with technical consultation.
Advanced Testing and Quality Assurance
Flybear Fastener adheres to an intensive quality control regimen to guarantee each threaded bar meets international standards.
Main Testing Equipment Includes:
- Thread Gauges, Pull & Torque Testing Machines
- Salt Spray Chamber for Corrosion Resistance
- Optical Sorters, Environmental Testers
- Spectrometer for material composition analysis
- Hardness Testing Instruments, Coating Thickness Gauges
- Metallographic Testers for microstructure examination
100% batch inspection ensures high product acceptance rate. Certified under ISO9001 & IATF16949, we promise standardized production and traceable quality.
Threaded Bar Selection and Procurement Guide
When selecting your A193 B7 Alloy Steel HDG Threaded Bars, consider the following factors:
- Working Environment: Moisture, chemical exposure, high/low temperatures.
- Required Strength: Match with tensile and yield strength expectations.
- Thread Type & Length: Based on fitting methods and mating components.
- Dimensional Specs: Ensure bar length and diameter match load requirements.
- Certifications: Verify ASTM, RoHS, or CE as per project mandates.
- Delivery Time: Choose a supplier like Flybear Fastener with good stock and timely shipping.
Our sales team is ready to assist in every selection step and provide formal quotations based on required specs.
Conclusion: Why Choose Flybear Fastener
At Flybear Fastener, we are committed to providing industry-grade fastener products and dependable engineered solutions tailored to your application. Our extensive manufacturing capabilities, quality control systems, and experienced support team make us a trusted supplier.
We always adhere to the principle of “Quality First, Customer Foremost,” aiming to deliver exceptional products and value to our partners and clients across the globe.
Feel free to contact us for more details, technical assistance, customized solutions, or a personalized quotation.
Choose Flybear Fastener — your reliable partner in precision engineering.
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