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Suzhou Galvanized Hex Bolt
QS Fastener: Suzhou Galvanized Hex Bolt
Product: Suzhou Galvanized Hex Bolt
Length: 85 mm
Size : 1 Inch
Standard: ASME B18.2.1
Material: ASTM A320 L7M
Surface Treatment: Hot Dip Galvanized (HDG)
Length: 85 mm
Size : 1 Inch
Standard: ASME B18.2.1
Material: ASTM A320 L7M
Surface Treatment: Hot Dip Galvanized (HDG)
Quantity
The Galvanized Hex Bolt offered by Suzhou is a high-performance fastening solution engineered for demanding industrial applications. With a nominal size of 1 inch and a length of 85 mm, this hex bolt delivers robust securing capability for heavy-duty connections. Manufactured in strict accordance with ASME B18.2.1 standards, it ensures dimensional precision and interchangeability, meeting the rigorous requirements of American National Standard for hex bolts.
Material Excellence – ASTM A320 L7M
This hex bolt is fabricated from ASTM A320 L7M alloy steel, a specification specifically designed for low-temperature service applications. Unlike the higher-strength Grade L7, Grade L7M offers a controlled hardness with a maximum of 235 HB, significantly reducing the risk of hydrogen embrittlement in sour service environments. The material provides a minimum yield strength of 80 ksi and a tensile strength of 100 ksi, ensuring reliable performance under extreme conditions.
This hex bolt is fabricated from ASTM A320 L7M alloy steel, a specification specifically designed for low-temperature service applications. Unlike the higher-strength Grade L7, Grade L7M offers a controlled hardness with a maximum of 235 HB, significantly reducing the risk of hydrogen embrittlement in sour service environments. The material provides a minimum yield strength of 80 ksi and a tensile strength of 100 ksi, ensuring reliable performance under extreme conditions.
Surface Protection – Hot Dip Galvanized (HDG)
The Hot Dip Galvanized (HDG) coating provides superior corrosion resistance by immersing the bolt in molten zinc at approximately 450°C, creating a metallurgical bond that forms a durable iron-zinc alloy layer. This treatment offers protection that typically lasts 25 to 50 years, even in aggressive atmospheric and marine environments. The HDG finish enhances weather resistance, saltwater resistance, and mechanical durability, making it an ideal choice for outdoor and high-exposure applications.
The Hot Dip Galvanized (HDG) coating provides superior corrosion resistance by immersing the bolt in molten zinc at approximately 450°C, creating a metallurgical bond that forms a durable iron-zinc alloy layer. This treatment offers protection that typically lasts 25 to 50 years, even in aggressive atmospheric and marine environments. The HDG finish enhances weather resistance, saltwater resistance, and mechanical durability, making it an ideal choice for outdoor and high-exposure applications.
Applications
This galvanized hex bolt is widely used in:
- Oil and Gas Industry: Refineries, pipelines, and offshore platforms, particularly in sour gas (H₂S) environments where resistance to sulfide stress cracking is critical
- Petrochemical Facilities: High-pressure and low-temperature equipment, valves, and pressure vessels
- Construction and Infrastructure: Steel structures, bridges, highway guardrails, and power transmission towers
- Marine Engineering: Shipbuilding, docks, and coastal installations where saltwater corrosion is a concern
This galvanized hex bolt is widely used in:
- Oil and Gas Industry: Refineries, pipelines, and offshore platforms, particularly in sour gas (H₂S) environments where resistance to sulfide stress cracking is critical
- Petrochemical Facilities: High-pressure and low-temperature equipment, valves, and pressure vessels
- Construction and Infrastructure: Steel structures, bridges, highway guardrails, and power transmission towers
- Marine Engineering: Shipbuilding, docks, and coastal installations where saltwater corrosion is a concern
This Galvanized Hex Bolt combines the low-temperature toughness of ASTM A320 L7M with the long-term corrosion protection of hot-dip galvanizing, delivering a reliable, durable fastening solution for critical infrastructure and industrial projects.
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