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Huaian Double End Threaded Rod
QS Fastener: Huaian Double End Threaded Rod
Product: Huaian Double End Threaded Rod
Total Length: 5.75 IN
Dimension: 1-1/8 IN
Thread: 8 UNC
Material: ASTM A193 B7
Color: Yellow
Standard: API 20E BSL2
Coating: Electric Zinc
Total Length: 5.75 IN
Dimension: 1-1/8 IN
Thread: 8 UNC
Material: ASTM A193 B7
Color: Yellow
Standard: API 20E BSL2
Coating: Electric Zinc
Quantity
The Double End Threaded Rod (also known as a stud bolt or double-ended stud) is a critical fastening component engineered for superior load distribution and joint integrity. Manufactured by Huaian, this specific configuration—Dimension: 1-1/8 IN, Thread: 8 UNC, Total Length: 5.75 IN—is precision-machined to deliver exceptional clamping force in demanding mechanical connections. Its double-ended design allows for simultaneous engagement into tapped holes or nuts on both sides, providing unparalleled design flexibility for complex assembly systems.
Material & Mechanical Properties
Crafted from ASTM A193 B7, a quenched and tempered chromium-molybdenum alloy steel, this rod offers outstanding tensile strength (minimum 125 ksi) and resistance to creep under high-temperature environments (up to 450°C / 840°F). This material grade is the industry benchmark for high-pressure, high-temperature (HPHT) bolting applications, ensuring long-term structural reliability in critical infrastructure.
Crafted from ASTM A193 B7, a quenched and tempered chromium-molybdenum alloy steel, this rod offers outstanding tensile strength (minimum 125 ksi) and resistance to creep under high-temperature environments (up to 450°C / 840°F). This material grade is the industry benchmark for high-pressure, high-temperature (HPHT) bolting applications, ensuring long-term structural reliability in critical infrastructure.
Corrosion Protection & Identification
The component features an Electric Zinc Coating (Electro-galvanized), which delivers a uniform, thin layer of zinc for effective corrosion resistance in indoor or mildly corrosive atmospheres. Unlike hot-dip galvanizing, this process maintains precise thread tolerances without compromising fit. The distinctive Yellow finish (clear trivalent chromate conversion) serves a dual purpose:
1. Enhanced Passivation: Provides an additional barrier against white rust.
2. Visual Identification: Allows for rapid grade and coating recognition during maintenance and safety inspections.
The component features an Electric Zinc Coating (Electro-galvanized), which delivers a uniform, thin layer of zinc for effective corrosion resistance in indoor or mildly corrosive atmospheres. Unlike hot-dip galvanizing, this process maintains precise thread tolerances without compromising fit. The distinctive Yellow finish (clear trivalent chromate conversion) serves a dual purpose:
1. Enhanced Passivation: Provides an additional barrier against white rust.
2. Visual Identification: Allows for rapid grade and coating recognition during maintenance and safety inspections.
Quality Standard – API 20E BSL2
This Double End Threaded Rod strictly complies with API 20E BSL2 (American Petroleum Institute Specification for Bolting, Performance Requirement Level 2). This certification mandates rigorous material traceability, stringent hardness control, and non-destructive testing (NDT) requirements—including magnetic particle inspection—to ensure zero critical defects. BSL2 compliance guarantees that each rod meets the metallurgical and manufacturing integrity required for hydrocarbon processing and critical service applications.
This Double End Threaded Rod strictly complies with API 20E BSL2 (American Petroleum Institute Specification for Bolting, Performance Requirement Level 2). This certification mandates rigorous material traceability, stringent hardness control, and non-destructive testing (NDT) requirements—including magnetic particle inspection—to ensure zero critical defects. BSL2 compliance guarantees that each rod meets the metallurgical and manufacturing integrity required for hydrocarbon processing and critical service applications.
Application Scenarios
This robust fastener is predominantly specified for:
- Flange Connections: Securing pipe flanges in oil refineries, chemical plants, and natural gas processing facilities.
- Pressure Vessels & Heat Exchangers: Where bolting must withstand cyclic thermal expansion and contraction.
- Pump & Valve Mounting: Providing stable anchoring for rotating equipment in offshore and onshore platforms.
- Structural Steel Erection: Where double-ended engagement simplifies alignment in confined spaces.
This robust fastener is predominantly specified for:
- Flange Connections: Securing pipe flanges in oil refineries, chemical plants, and natural gas processing facilities.
- Pressure Vessels & Heat Exchangers: Where bolting must withstand cyclic thermal expansion and contraction.
- Pump & Valve Mounting: Providing stable anchoring for rotating equipment in offshore and onshore platforms.
- Structural Steel Erection: Where double-ended engagement simplifies alignment in confined spaces.
Why Choose This Double End Threaded Rod?
By selecting this ASTM A193 B7 Double End Threaded Rod, engineers benefit from a harmonious balance of high-strength metallurgy, precision thread geometry (8 UNC for optimal grip and galling resistance), and a standardized yellow-electric-zinc finish that simplifies OEM quality control. The API 20E BSL2 certification eliminates uncertainty, providing auditable proof of performance. Whether you are upgrading existing pipe supports or designing new pressure-containing equipment, this 5.75-inch stud offers industry-leading durability and dimensional accuracy to ensure leak-free, long-lasting operations.
By selecting this ASTM A193 B7 Double End Threaded Rod, engineers benefit from a harmonious balance of high-strength metallurgy, precision thread geometry (8 UNC for optimal grip and galling resistance), and a standardized yellow-electric-zinc finish that simplifies OEM quality control. The API 20E BSL2 certification eliminates uncertainty, providing auditable proof of performance. Whether you are upgrading existing pipe supports or designing new pressure-containing equipment, this 5.75-inch stud offers industry-leading durability and dimensional accuracy to ensure leak-free, long-lasting operations.
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