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Huaian Double Ended Threaded Bar
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Product: Huaian Double Ended Threaded Bar
Dimension: 1-7/8 IN
Material: ASTM A193 B17
Length: 115 mm
Standard: API 20E BSL 2
Thread: 8 UNC
Coating: Zn Coating Yellow
Dimension: 1-7/8 IN
Material: ASTM A193 B17
Length: 115 mm
Standard: API 20E BSL 2
Thread: 8 UNC
Coating: Zn Coating Yellow
Quantity
Our Double Ended Threaded Bar represents a benchmark in high-strength industrial fastening, meticulously engineered for critical service environments. Manufactured in strict compliance with API 20E Bolting Specification Level 2 (BSL 2) , this component delivers an intermediate level of quality assurance, making it ideal for moderately critical applications where bolting failure could result in significant equipment downtime or safety risks .
Constructed from ASTM A193 Grade B7 chromium-molybdenum alloy steel, the bar undergoes quenched and tempered heat treatment to achieve exceptional tensile strength and resistance to high-temperature service up to 450°C (840°F) . The 1-7/8 inch diameter with 8 UNC threads per inch follows the industry standard for diameters above one inch, ensuring optimal thread engagement and load distribution . With an overall length of 115 mm, this double-ended design features threaded ends with an unthreaded central shank, providing superior resistance to bending stress compared to standard through-bolts in thick-joint applications . The yellow zinc coating enhances corrosion resistance while providing a distinctive aesthetic finish.
Applications and Technical Significance
The API 20E BSL 2 designation signifies enhanced material traceability and mandatory non-destructive examination (NDE) such as magnetic particle testing, making this threaded bar particularly suited for wellhead equipment, surface production systems, and mild sour service (H₂S) environments .
The API 20E BSL 2 designation signifies enhanced material traceability and mandatory non-destructive examination (NDE) such as magnetic particle testing, making this threaded bar particularly suited for wellhead equipment, surface production systems, and mild sour service (H₂S) environments .
Typical applications include:
- Flange connections in pressure vessels and piping systems
- Heavy equipment attachment where one end is permanently fixed while the other accommodates removable nuts for easy maintenance
- Valve and pump assemblies in petrochemical and refining facilities
- Structural connections in power generation and heavy machinery
- Flange connections in pressure vessels and piping systems
- Heavy equipment attachment where one end is permanently fixed while the other accommodates removable nuts for easy maintenance
- Valve and pump assemblies in petrochemical and refining facilities
- Structural connections in power generation and heavy machinery
The double-ended configuration facilitates installation in confined spaces and simplifies disassembly during routine maintenance, significantly reducing operational downtime . This bar is a reliable, corrosion-resistant solution for engineering projects demanding high-performance bolting in challenging industrial environments.
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