1. How to choose the material of L bolts
(1) Carbon steel L anchor bolts
Ordinary carbon steel (Q235): low price, suitable for general fixing, but easy to rust, need to be rust-proofed (such as galvanizing).
High-strength carbon steel (45# steel, 40Cr): 8.8 grade, 10.9 grade, strong bearing capacity, suitable for heavy equipment.
(2) Stainless steel L anchor bolts
304 stainless steel: resistant to general corrosion, suitable for humid, acidic and alkaline environments (such as food factories and chemical plants).
316 stainless steel: resistant to salt spray corrosion, suitable for coastal and high humidity areas (such as offshore wind power and port equipment).
✅ Selection suggestions:
General environment → galvanized carbon steel (cost-effective)
Wet/corrosive environment → 304/316 stainless steel (long-term durability)
2. How to choose l bolts for concrete of different strength levels
General equipment → 5.8 grade
Heavy machinery/steel structure → 8.8 grade (most commonly used)
Ultra-high load → 10.9 grade
3. How to choose different surface treatment methods for L bolt
General outdoor → hot-dip galvanizing
Chemical/high temperature → Dacromet
Food/medical → 304/316 stainless steel
4. How to choose the installation method of concrete l bolt
(1) Embedded type (installed before pouring)
Advantages: Strongest bearing capacity, suitable for heavy equipment (such as large machine tools, steel structures).
Note: Accurate positioning is required to avoid pouring deviation.
(2) Post-installation type (chemical anchor/expansion bolt)
Advantages: No need for advance planning, suitable for renovation projects.
Note: Make sure the drill hole is clean and the anchor glue is of good quality.
Post time: Apr-03-2025