Unifit Metalloys Inc is a prominent manufacturer and supplier of ASTM A193 Grade L7 Fasteners. These fasteners are engineered specifically for critical applications. They are suitable for low temperature and high pressure environments. These fasteners are made from chromium molybdenum alloy steel. They undergo a rigorous quenching and tempering process. This process enhances mechanical strength, toughness and resistance to brittle fracture. This is true even at sub zero or cryogenic temperatures. They are known for excellent tensile and yield strength. ASTM A193 Gr L7 fasteners are ideal for systems exposed to thermal stress, vibration and corrosive conditions. Our offerings are produced in compliance with the ASTM A193 specification. This ensures superior performance and reliability in demanding operational scenarios.
Unifit Metalloys Inc provides a comprehensive range of Grade L7 bolts, stud bolts, nuts, screws, washers and threaded rods. All products are manufactured to meet international standards. These standards include ASTM, ASME, DIN and ISO. These fasteners are widely used across many industries. These industries include oil and gas exploration LNG terminals and petrochemical refineries. They are also used in thermal and nuclear power plants, offshore drilling platforms and heavy machinery manufacturing. Our strict quality control procedures are always followed. We also offer optional third party inspections and certifications. These steps ensure every product meets the performance and safety expectations of our clients. Whether for high pressure piping systems or low temperature storage units, our L7 fasteners deliver long term durability. They also provide dimensional precision and consistent mechanical integrity under extreme conditions.
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Types of ASTM A193 L7 Fasteners
- ASTM A193 L7 Structural Bolts
- ASTM A193 L7 Heavy Hex Bolts
- ASTM A193 L7 Hex Bolts
- ASTM A193 L7 Hexagon Head Bolts
- ASTM A193 L7 Machine Bolts
- ASTM A193 Grade L7 T Bolts
- ASTM A193 Gr. L7 Eye Bolt
- ASTM A193 L7 Foundation Bolts
- Alloy Steel A193 Gr L7 J Bolts
- ASTM A193 L7 Button Head Bolt
- ASTM A193 L7 Anchor Bolts
- ASTM A193 L7 Long Bolts
- ASTM A193 L7 Carriage Bolt
- ASTM A193 L7 Elevator Bolt
- ASTM A193 L7 Timber Bolts
- ASTM A193 L7 Square Bolt
- ASTM A193 L7 Metric Bolt
- ASTM A193 L7 Plow Bolts
- Alloy Steel Gr. L7 U Bolts
- ASTM A193 L7 Flange Bolts
- ASTM A193 L7 Socket Set Screw
- ASTM A193 L7 Self Drilling Screw
- ASTM A193 L7 Socket Head Cap Screw
- ASTM A193 L7 Hex Head Screws
- ASTM A193 L7 Wood Screw
- ASTM A193 Gr. L7 Eye Screw
- ASTM A193 Gr. L7 Wing Screw
- ASTM A193 L7 Self Tapping Screws
- ASTM A193 Gr. L7 Roofing Screw
- ASTM A193 L7 Phillips Head Screw
- ASTM A193 L7 Decking Screw
- ASTM A193 L7 Machine Screw
- ASTM A193 L7 Thumb Screw
- ASTM A193 L7 Drywall Screws
- ASTM A193 L7 Chipboard Screw
- ASTM A193 L7 Metric Set Screws
- Alloy Steel L7 Sems Screw
- ASTM A193 L7 Thread Rolling Screw
- ASTM A193 L7 Full Threaded Stud Bolts
- ASTM A193 L7 Half Threaded Stud Bolts
- Alloy Steel ASTM A193 L7 Threaded Rod
- ASTM A193 L7 Double Ended Studs
- ASTM A193 L7 Tap End Stud Bolt
- Alloy Steel ASTM A193 L7 Tie Rods
- Alloy Steel A193 Grade L7 Studs
- ASTM A193 L7 Single End Stud Bolts
- A193 Gr.L7 Reduced Shank Stud Bolt
- A193 L7 Continuous Threaded Stud Bolt
- A193 L7 Partial Threads Stud Bolt
- SA193 / A193 L7 Heavy Stud Bolts
All fasteners are available in standard and custom dimensions. These dimensions are as per ASTM ASME DIN and ISO specifications. This ensures they meet the exact needs of your project.
ASTM ASTM A193 Grade L7 Chemical Composition
The chemical composition of ASTM A193 Grade L7 fasteners is carefully balanced. This balance ensures high tensile strength and excellent toughness. It also provides superior resistance to corrosion and embrittlement. These properties make them ideal for low temperature and high stress industrial applications.
| Element | Minimum (%) | Maximum (%) |
| Carbon (C) | 0.37 | 0.49 |
| Manganese (Mn) | 0.65 | 1.10 |
| Phosphorus (P) | — | 0.035 |
| Sulfur (S) | — | 0.040 |
| Silicon (Si) | 0.15 | 0.35 |
| Chromium (Cr) | 0.75 | 1.20 |
| Molybdenum (Mo) | 0.15 | 0.25 |
This precise alloy composition ensures consistent performance. It also ensures structural integrity even in cryogenic and high pressure environments.
ASTM A193 Grade L7 Raw Material
The raw materials for ASTM A193 Grade L7 fasteners consist of carefully selected chromium molybdenum alloy steel. This selection ensures optimal mechanical properties. These properties are essential for low temperature and high pressure applications.
| Grade | Raw Material Description |
| ASTM A193 L7 | Chromium-Molybdenum-Vanadium Alloy Steel, Quenched & Tempered |
ASTM A193 Grade L7 Material Specification for Fasteners
Specifications : ASTM A193 / ASME SA193
Length : 3mm to 200mm
Size : 3/6″ to 2″, M3 – M56, Custom Sizes
ASTM A193 Grade L7 Mechanical Properties of Fasteners
ASTM A193 Grade L7 fasteners are engineered to deliver exceptional mechanical performance. This performance is crucial in demanding low temperature and high pressure environments. Their superior tensile strength yields strength and impact resistance ensures reliable operation. This reliability holds even under extreme stress and cryogenic conditions.
| Size | Tensile Strength (ksi, min) | Yield Strength (ksi, min) | Charpy Impact 20-ft-lbf @ temp | Elongation (%) min | Reduction of Area (%) min | Hardness (max) |
| Up to 2-½” | 125 | 105 | -150°F | 16 | 50 | C35 |
These mechanical properties make ASTM A193 Grade L7 fasteners an ideal choice. They are ideal for critical applications requiring high strength, toughness and durability. This is especially true in extreme low temperature and high pressure conditions.
Key Differences of ASTM A193 L7 vs A320 L7
ASTM A193 Grade L7 and ASTM A320 Grade L7 fasteners are both high strength alloy steel products. They are designed for demanding applications. But they serve different service temperature ranges and industry requirements. Understanding their key differences helps in selecting the right fastener. This selection is important for specific environmental and mechanical conditions.
| Feature | ASTM A193 Grade L7 | ASTM A320 Grade L7 |
| Application | High-pressure, low-temp systems | Cryogenic, sub-zero systems |
| Impact Test Required | Not mandatory (unless specified) | Mandatory for cryogenic use |
| Usage Environments | Refineries, gas lines, reactors | LNG plants, cryo tanks, valves |
| Specification Scope | Bolting for pressure vessels | Bolting for low-temp service |
The following comparison highlights essential distinctions. These distinctions are between ASTM A193 L7 and ASTM A320 L7 fasteners. This information guides informed material selection.
ASTM A193 Gr L7 Fasteners Standards
ASTM A193 Grade L7 fasteners are manufactured in strict accordance. They accord with international ASTM and ASME standards. This ensures superior quality, high strength and reliable performance. This performance is vital in low temperature high pressure industrial applications.
| Hexagon Bolt / Set Screws | Stud Bolt | Hexagon Nuts | Socket Cap screws |
|---|---|---|---|
| DIN 931 | BS4882 | DIN 934 | DIN 912 |
| DIN 933 | DIN 976 | BS 1768 | DIN 6912 |
| BS 1768 | BS 1769 | DIN 7984 | |
| UNI 5731 | BS 1083 | ANSI B18.3 | |
| UNI 5739 | BS 3692 | ISO 4762 | |
| ISO 4014 | ISO 4032 | UNI 5931 | |
| ISO 4017 | ISO 4033 | BS 2470 | |
| BS 1769 | ANSI B18.2.2 | BS 4168 | |
| BS 3692 | |||
| ANSI B18.2.1 |
| Socket & Slotted Set Screws | Socket & Slotted Countersunk Screws | Studs | Washers |
|---|---|---|---|
| DIN 913 | DIN 963 | DIN 938 | DIN 125 |
| DIN 914 | DIN 7991 | DIN 939 | DIN 9021 |
Applications of ASTM A193 Grade L7 Fasteners
ASTM A193 Grade L7 fasteners specifically engineered for use in environments. That requires high strength resilience at low temperatures. These fasteners are essential for industry applications. Where reliability under extreme cold is critical. Some key industries include:
- Heavy Engineering Industries
- Petro-Chemical Industries
- Shipbuilding Industries
- Fertilizer Plants
- Civil Construction Industries
- Power Generation Units (Nuclear, Hydro, or Thermal)
- Civil Industries
- Oil Expansion Projects
- Offshore & Onshore Oil Towers
- Valves
- Pressure Vessels
- Home Fittings
- Pumps
- Railways
- Steel Plants
ASTM A193 Grade L7 Price in India for Fasteners
Unifit Metalloys Inc offers the most competitive pricing. We offer this on ASTM A193 Grade L7 fasteners in India. We deliver premium quality that meets stringent international standards. Whether you require heavy hex nuts studs or other specialized fasteners our products are engineered. They are engineered for exceptional strength, toughness and reliable performance. This performance is crucial in high pressure low temperature environments. We have a commitment to timely delivery and expert technical support. With this we ensure your projects maintain maximum safety, durability and efficiency. Are you ready to experience superior ASTM A193 L7 fasteners? Fasteners tailored to your specifications. Fill out the form below to receive a personalized quote and professional guidance today.
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ASTM A193 L7 Fasteners Manufacturer, ASTM A193 L7 Hex Bolts, ASTM A193 L7 Stud Bolt, ASTM A193 Gr.L7 Allen Head Bolt, ASTM A193 L7 Socket Head Cap Screw, Alloy Steel L7 Fasteners Supplier in India.
ASTM A193 Grade L7 Heavy Hex Head Bolts, ASTM A193 Gr L7 Bolts, ASTM A193 Gr.L7 Screws, ASTM A193 L7 Hexagon Screw Head Bolt, ASTM A193 L7 Hexagon Bolt, Alloy Steel L7 Threaded Rod Manufacturer in Mumbai, India.
Unifit Metalloys Inc. manufactures, suppliers and exports of ASTM A193 Grade L7 Fasteners to various countries such as Mongolia, Serbia, Bahrain, Spain, Yemen, Hong Kong, Portugal, Pakistan, Saudi Arabia, Belarus, Gabon, Poland, Vietnam, Greece, Nigeria, Qatar, Sweden, Poland, Kuwait, Croatia, Morocco, Oman, Costa Rica, Austria, Ecuador, Thailand, Estonia, Indonesia, Kazakhstan, Kenya, South Korea, China, Philippines, United Arab Emirates, Italy, Israel, Nigeria, Mexico, Czech Republic, Lebanon, Mexico, Afghanistan, Argentina, Romania, Switzerland, Ukraine, Chile, Turkey, Chile, South Africa, United States, Azerbaijan, Bulgaria, Colombia, Venezuela, Angola, Kazakhstan, Bangladesh, Bhutan, Belgium, Denmark, Trinidad & Tobago, Iran, United Kingdom, Libya, Iran, Finland, Canada, Australia, Egypt, Bolivia, Hungary, Australia, Peru, Singapore, New Zealand, Iraq, Ghana, Jordan, France, Algeria, Russia, Japan, Taiwan, Norway, Jordan, Lithuania, Tunisia, Netherlands, Slovakia, Sri Lanka, Brazil, Malaysia.
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United States
Saudi Arabia
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Singapore
Malaysia
UAE
Germany
Italy
China
UK
Canada
Iran
Thailand
South Korea
Turkey
Morocco
Costa Rica
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Philippines
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Japan
Russia
Vietnam
Australia
Qatar
South Africa
Portugal
Oman
Jordan
Spain
Hong Kong
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Mexico
Brazil
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Bangladesh
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