ASTM A320 L7 Hex Bolt
The ASTM A320 Grade L7 Hex Bolt acts as an essential component for cold-weather industrial infrastructure. Initially, our production facility crafts these fasteners using high-grade chromium-molybdenum (Cr-Mo) alloy steel. Following this initial step, the raw material undergoes precise heat treatment processes. Most importantly, our technicians subject every batch to rigorous low-temperature impact tests. Ultimately, these premium bolts secure critical connections in Liquefied Natural Gas (LNG) plants, cold storage facilities, and Arctic offshore platforms without risking sudden structural failure.
Product Parameter (Specification)
| Standard | ASTM A320 / ASME SA320 | Material | Ferritic Alloy Steel (Cr-Mo) |
| Surface Treatment | Plain, Zinc Plated, Hot Dip Galvanized (HDG), PTFE/Xylan coated | Shank | Full thread, Partial thread |
| Grade | L7 | Low-Temp Requirement | Charpy V-Notch Impact Tested at -150°F (-101°C) |
| Unite | Piece,KGS,TON | Size | 1/4″ – 4″ (Metric: M6 – M100) |
| Mating Nuts | ASTM A194 Grade 4 or Grade 7 | Packing | Bulk cartons with pallet, small boxes in cartons with pallet |
Product Application
Various global sectors heavily utilize ASTM A320 L7 Hex Bolts for winterized operations. Specifically, the Liquefied Natural Gas (LNG) industry, aerospace sector, and petrochemical plants depend heavily on their unique cold-resistant properties. Furthermore, these reliable fasteners excel wherever freezing ambient temperatures or cryogenic internal fluids exist.
ASTM A193 B7 Hex Bolt Application Scenario Table
| Industry Sector | Specific Scenario | Recommended Class | Core Usage Considerations |
| Liquefied Natural Gas (LNG) | Cryogenic storage tanks and transport pipelines | ASTM A320 L7 + A194 Gr 4/7 Nuts | These projects demand exceptional impact toughness at -101°C to prevent hazardous gas leaks. |
| Arctic / Cold Region Operations | Offshore platforms and exposed structural flanges | ASTM A320 L7 (with PTFE/Zinc coating) | Facility engineers focus on preventing brittle fracture caused by freezing weather and icy winds. |
| Petrochemical Processing | Cold gas pipelines and chemical expansion valves | ASTM A320 L7 | Critical piping systems require fasteners that easily withstand rapid pressure drops and deep freezing. |
| Aerospace & Defense | Specialized ground support equipment | ASTM A320 L7 | Defense contractors prioritize absolute material reliability during extreme high-altitude cold exposure. |
How to Order / Quick Specs Checklist for Inquiry
To help our technical sales team identify your specific fastener needs quickly, please include the following specifications in your inquiry. Because accurate details allow us to provide a precise B2B quote, we need the following information:
- Standard & Grade: (e.g., ASTM A320 L7)
- Dimensions (Diameter x Length): (e.g., 7/8″ – 9 TPI x 5″)
- Thread Type: (Full thread or Partial thread)
- Surface Treatment: (e.g., Zinc Plated or PTFE for extreme environments)
- Order Quantity: (Specify in Pieces, KGS, or TONs)
- Specific Application (Optional): Finally, let us know your industry or operating temperature so we can recommend the best mating nuts (like A194 Grade 4 or 7).
Ready to secure your cold-weather project? Contact QISHENG today with your specific requirements. Subsequently, our dedicated team will quickly provide you with tailored fastening solutions and highly competitive B2B pricing.
Description
The ASTM A320 Grade L7 Hex Bolt acts as an essential component for cold-weather industrial infrastructure. Initially, our production facility crafts these fasteners using high-grade chromium-molybdenum (Cr-Mo) alloy steel. Following this initial step, the raw material undergoes precise heat treatment processes. Most importantly, our technicians subject every batch to rigorous low-temperature impact tests. Ultimately, these premium bolts secure critical connections in Liquefied Natural Gas (LNG) plants, cold storage facilities, and Arctic offshore platforms without risking sudden structural failure.
Product Parameter (Specification)
| Standard | ASTM A320 / ASME SA320 | Material | Ferritic Alloy Steel (Cr-Mo) |
| Surface Treatment | Plain, Zinc Plated, Hot Dip Galvanized (HDG), PTFE/Xylan coated | Shank | Full thread, Partial thread |
| Grade | L7 | Low-Temp Requirement | Charpy V-Notch Impact Tested at -150°F (-101°C) |
| Unite | Piece,KGS,TON | Size | 1/4″ – 4″ (Metric: M6 – M100) |
| Mating Nuts | ASTM A194 Grade 4 or Grade 7 | Packing | Bulk cartons with pallet, small boxes in cartons with pallet |
Product Application
Various global sectors heavily utilize ASTM A320 L7 Hex Bolts for winterized operations. Specifically, the Liquefied Natural Gas (LNG) industry, aerospace sector, and petrochemical plants depend heavily on their unique cold-resistant properties. Furthermore, these reliable fasteners excel wherever freezing ambient temperatures or cryogenic internal fluids exist.
ASTM A193 B7 Hex Bolt Application Scenario Table
| Industry Sector | Specific Scenario | Recommended Class | Core Usage Considerations |
| Liquefied Natural Gas (LNG) | Cryogenic storage tanks and transport pipelines | ASTM A320 L7 + A194 Gr 4/7 Nuts | These projects demand exceptional impact toughness at -101°C to prevent hazardous gas leaks. |
| Arctic / Cold Region Operations | Offshore platforms and exposed structural flanges | ASTM A320 L7 (with PTFE/Zinc coating) | Facility engineers focus on preventing brittle fracture caused by freezing weather and icy winds. |
| Petrochemical Processing | Cold gas pipelines and chemical expansion valves | ASTM A320 L7 | Critical piping systems require fasteners that easily withstand rapid pressure drops and deep freezing. |
| Aerospace & Defense | Specialized ground support equipment | ASTM A320 L7 | Defense contractors prioritize absolute material reliability during extreme high-altitude cold exposure. |
How to Order / Quick Specs Checklist for Inquiry
To help our technical sales team identify your specific fastener needs quickly, please include the following specifications in your inquiry. Because accurate details allow us to provide a precise B2B quote, we need the following information:
- Standard & Grade: (e.g., ASTM A320 L7)
- Dimensions (Diameter x Length): (e.g., 7/8″ – 9 TPI x 5″)
- Thread Type: (Full thread or Partial thread)
- Surface Treatment: (e.g., Zinc Plated or PTFE for extreme environments)
- Order Quantity: (Specify in Pieces, KGS, or TONs)
- Specific Application (Optional): Finally, let us know your industry or operating temperature so we can recommend the best mating nuts (like A194 Grade 4 or 7).
Ready to secure your cold-weather project? Contact QISHENG today with your specific requirements. Subsequently, our dedicated team will quickly provide you with tailored fastening solutions and highly competitive B2B pricing.