China Suppliers Factory Foundation Anchor Bolts: L Shape, J Shape, 9 Shape, Hdg Bolts for Secure Installation
Production Parameter
| Thread size d | M8 | M10 | M12 | M16 | M20 | M24 | M30 | M36 | M42 | M48 | M56 | M64 | M72 | |
| P | pitch | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6 |
| b | Deviation value(+2P,0) | 31 | 36 | 40 | 50 | 58 | 68 | 80 | 94 | 106 | 120 | 140 | 160 | 180 |
| L1 | 46 | 65 | 82 | 93 | 127 | 139 | 192 | 244 | 261 | 302 | 343 | 385 | 430 | |
| D | 10 | 15 | 20 | 20 | 30 | 30 | 45 | 60 | 60 | 70 | 80 | 90 | 100 | |
| x | Max | 3.2 | 3.8 | 4.3 | 5 | 6.3 | 7.5 | 9 | 10 | 11 | 12.5 | 14 | 15 | 15 |
Production Description
Please let us know the specific sizes you need so that we could offer the best solutions.
When the mechanical member is installed on a concrete foundation, the J-shaped and L-shaped end of the bolt is embedded in the concrete for use.
The tensile capacity of the anchor bolt is the tensile capacity of the round steel itself, the size is equal to the section area multiplied by the allowable stress value (Q235B:140MPa, 16Mn or Q345:170MPA) is the allowable tensile capacity of the design.
Anchor bolts are generally made of Q235 steel, which is light round. Rebar (Q345) strength, do not make the nut of the wire buckle light round easy. For the optical anchor bolt, the burial depth is generally 25 times of its diameter, and then make a 90-degree bending hook about 120mm long. If the bolt diameter is very large (such as 45mm) and the buried depth is too deep, you can weld the square plate at the end of the bolt, that is, make a big head (but there are certain requirements). The buried depth and bent hook are to ensure the friction between the bolt and the foundation, so that the bolt will not be pulled out.
Foundation bolts, also known as anchor bolts, are used for many industrial and civil engineering purposes. Typically, they secure structural elements to foundations, but they serve other significant functions, such as moving heavy objects and fastening heavy machines to foundations to ensure safe and effective operation. This range means selecting the right choice among the different foundation bolt types is crucial. Your chosen bolt should withstand the forces it will experience in action and work well with the structural elements and machinery.
Frequently Asked Questions (FAQ)
How are J-shaped and L-shaped anchor bolts installed?
When installing mechanical members on a concrete foundation, the J-shaped or L-shaped hook end of the anchor bolt is embedded directly into the concrete to secure the structure.
What materials are anchor bolts typically made of?
Anchor bolts are generally manufactured using Q235 light round steel. Rebar (Q345) is also used for its high strength, although it is less common for threading compared to light round steel.
How is the tensile capacity of an anchor bolt calculated?
The tensile capacity is determined by multiplying the cross-sectional area of the round steel by its allowable stress value. For example, the allowable design value is 140MPa for Q235B steel, and 170MPa for 16Mn or Q345 steel.
What is the standard burial depth for optical anchor bolts?
For optical anchor bolts, the standard burial depth is typically 25 times the bolt's diameter, accompanied by a 90-degree bending hook that is approximately 120mm in length.
What is the purpose of the bent hook or welded square plate?
Both the buried depth and the bent hook (or welded square plate at the end of large-diameter bolts) are designed to maximize friction between the bolt and the foundation, preventing the bolt from being pulled out under tension.
What are the primary applications of foundation anchor bolts?
Foundation bolts are widely used in industrial and civil engineering. They secure structural elements to concrete foundations, assist in moving heavy objects, and fasten heavy machinery to ensure stable, safe, and effective operation.