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Zhangzhou Low Temperature Stud Bolt
QS Fastener: Zhangzhou Low Temperature Stud Bolt
Product: Zhangzhou Low Temperature Stud Bolt
Size: 1/2 Inch
Material for Stud Bolt: ASTM A320 B8M Class1
Thread: 13 UNC
Total Length: 120 mm
Standard for Bolt: ASME B18.31.2
Size: 1/2 Inch
Material for Stud Bolt: ASTM A320 B8M Class1
Thread: 13 UNC
Total Length: 120 mm
Standard for Bolt: ASME B18.31.2
Quantity
The Low Temperature Stud Bolt is a critical fastening solution specifically designed for pressure vessels, piping flanges, heat exchangers, and valve applications that operate in sub-zero environments. Manufactured from ASTM A320 B8M Class 1, this material is a molybdenum-bearing austenitic stainless steel that delivers exceptional impact toughness at temperatures as low as -196°C (-320°F), making it ideal for liquefied natural gas (LNG) plants, petrochemical refineries, and Arctic pipeline projects.
Unlike conventional fasteners that become brittle under thermal shock, this Low Temperature Stud Bolt retains its ductility and resistance to chloride stress corrosion cracking, thanks to its controlled chemical composition and solution-annealed heat treatment. The Class 1 designation ensures that the bolt passes stringent Charpy V-notch impact tests at cryogenic temperatures, a mandatory requirement for pressure-containing bolting per ASME Section VIII.
Precision Dimensions and Thread Fit
This stud bolt is sized at 1/2 inch with a 13 UNC thread series, providing a coarse pitch that minimizes galling during installation and offers robust resistance to thread stripping under high preload. The total length of 120 mm ensures sufficient thread engagement for standard flange thicknesses, with plain-end chamfered leads to facilitate easy nut starting. All threads are rolled—not cut—to maintain uninterrupted grain flow, which significantly enhances fatigue life and tensile strength.
This stud bolt is sized at 1/2 inch with a 13 UNC thread series, providing a coarse pitch that minimizes galling during installation and offers robust resistance to thread stripping under high preload. The total length of 120 mm ensures sufficient thread engagement for standard flange thicknesses, with plain-end chamfered leads to facilitate easy nut starting. All threads are rolled—not cut—to maintain uninterrupted grain flow, which significantly enhances fatigue life and tensile strength.
Standard Compliance and Quality Assurance
Fully manufactured in compliance with ASME B18.31.2, this Low Temperature Stud Bolt adheres to strict dimensional tolerances for thread run-out, straightness, and end configuration. Each production lot is traceable with mill test reports (MTRs) and positive material identification (PMI) verification, ensuring full material traceability from melting to final packaging. Our rigorous quality control includes dimensional gauging, hardness testing, and optional third-party inspection to meet NACE MR0175 requirements where applicable.
Fully manufactured in compliance with ASME B18.31.2, this Low Temperature Stud Bolt adheres to strict dimensional tolerances for thread run-out, straightness, and end configuration. Each production lot is traceable with mill test reports (MTRs) and positive material identification (PMI) verification, ensuring full material traceability from melting to final packaging. Our rigorous quality control includes dimensional gauging, hardness testing, and optional third-party inspection to meet NACE MR0175 requirements where applicable.
Application and Performance Benefits
- Extreme Cold Toughness: Unmatched impact resistance prevents catastrophic bolt failure in thermal cycling conditions.
- Corrosion Resistance: The 8M grade (316 stainless steel equivalent) provides superior pitting and crevice corrosion resistance in marine and sour-service environments.
- Reliable Clamping Force: The 13 UNC thread geometry, combined with a precision-machined bearing surface, ensures consistent torque-tension relationships, reducing the risk of flange leakage.
- Long-Term Durability: The combination of austenitic microstructure and rolled threads delivers extended service life with minimal stress relaxation, even after repeated thermal excursions.
- Extreme Cold Toughness: Unmatched impact resistance prevents catastrophic bolt failure in thermal cycling conditions.
- Corrosion Resistance: The 8M grade (316 stainless steel equivalent) provides superior pitting and crevice corrosion resistance in marine and sour-service environments.
- Reliable Clamping Force: The 13 UNC thread geometry, combined with a precision-machined bearing surface, ensures consistent torque-tension relationships, reducing the risk of flange leakage.
- Long-Term Durability: The combination of austenitic microstructure and rolled threads delivers extended service life with minimal stress relaxation, even after repeated thermal excursions.
Ideal Industries and Use Cases
This Low Temperature Stud Bolt is the preferred choice for offshore platforms, cryogenic storage tanks, refrigeration systems, and high-pressure gas transmission lines. Its 1/2-inch diameter and 120 mm length make it directly interchangeable with common ANSI/ASME flanged connections, simplifying retrofit and maintenance projects.
This Low Temperature Stud Bolt is the preferred choice for offshore platforms, cryogenic storage tanks, refrigeration systems, and high-pressure gas transmission lines. Its 1/2-inch diameter and 120 mm length make it directly interchangeable with common ANSI/ASME flanged connections, simplifying retrofit and maintenance projects.
Conclusion
When your application demands uncompromised structural integrity in low-temperature conditions, the Zhangzhou ASTM A320 B8M CL.1 Low Temperature Stud Bolt offers a proven, code-compliant, and cost-effective fastening solution. By combining premium raw materials, precision manufacturing, and rigorous testing, we ensure that each bolt delivers consistent performance, safeguarding your equipment and personnel in the most challenging cold-service environments.
When your application demands uncompromised structural integrity in low-temperature conditions, the Zhangzhou ASTM A320 B8M CL.1 Low Temperature Stud Bolt offers a proven, code-compliant, and cost-effective fastening solution. By combining premium raw materials, precision manufacturing, and rigorous testing, we ensure that each bolt delivers consistent performance, safeguarding your equipment and personnel in the most challenging cold-service environments.
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