An L-type foundation bolt (also known as an anchor bolt or L-bolt) is a type of fastener used to attach structural elements to concrete, often forming a strong and permanent connection. The “L” shape provides a secure embedment into the concrete, ensuring stability and resistance to various forces once the concrete cures. When made from stainless steel grades like SS201 or SS304, these bolts offer enhanced resistance to corrosion, making them suitable for demanding environments.

Key Features:

• L-Shape Design: The distinctive “L” bend at one end is embedded deep into concrete foundations, footings, or slabs. This shape creates a strong mechanical interlock, preventing the bolt from being pulled out under tension.
• Material Options (SS201/SS304):
  • SS201 Stainless Steel: Offers good strength and reasonable corrosion resistance at a more economical price point. It is suitable for applications where moderate corrosion resistance is sufficient.
  • SS304 Stainless Steel: Provides superior corrosion resistance due to its higher chromium and nickel content, making it ideal for outdoor, wet, or mildly corrosive environments. It offers excellent durability and longevity.
• Threaded End: The un-embedded end of the bolt features threads (e.g., metric, UNC, UNF) to accommodate a nut and washer, allowing for secure fastening of the object to the foundation.
• Durability: Stainless steel construction ensures long-term performance, resisting rust and degradation common with conventional steel in certain conditions.

Specifications:

• Material: Stainless Steel (SS201, SS304)
• Diameter: Available in a wide range of imperial and metric diameters (e.g., M10 to M50, 1/2″ to 2″).
• Length: Varies significantly based on application, referring to the total length of the bolt, including the embedded portion and the threaded projection.
• L-Bend Dimensions: The length of the “leg” of the L-bend can vary to provide adequate anchorage depth.
• Thread Type: Common options include Metric Coarse, UNC (Unified National Coarse), UNF (Unified National Fine).
• Finish: Typically bright or passivated for enhanced corrosion resistance.

Typical Applications:

• Construction: Anchoring steel columns, base plates for machinery, heavy equipment, pre-engineered buildings, and structural frames to concrete foundations.
• Industrial: Securing heavy machinery bases, conveyor systems, storage tanks, and industrial piping to concrete floors.
• Marine/Coastal: Due to their corrosion resistance, SS304 L-bolts are excellent for docks, piers, seawalls, and other structures exposed to saltwater or high humidity.
• Infrastructure: Used in bridge construction, road signs, guardrail installations, and utility pole bases.
• Outdoor Fixtures: Anchoring streetlights, park benches, large signage, and fencing posts.
• Architectural: Fastening architectural elements, facades, and curtain walls to concrete structures.

Advantages of Stainless Steel L-Type Foundation Bolts:

• Corrosion Resistance: Excellent for outdoor use, coastal regions, and environments exposed to moisture, chemicals, or extreme weather.
• Strength and Stability: Provides a robust and reliable connection to concrete, essential for heavy loads or critical structural applications.
• Longevity: Stainless steel bolts offer a long service life, reducing the need for frequent replacement and maintenance.
• Versatility: Suitable for a wide range of industries and applications requiring secure embedment into concrete.