1. Dimensions of materials for dedicated guardrails for foundation pits.

There are many types of foundation pit guardrails, with different production methods and materials used. The frame foundation pit guardrail requires the use of square tubes as the frame reinforcement, and the quality of the frame is also an important part of the entire foundation pit guardrail, which has a significant impact on the price. The length, width, and thickness of the materials used in the areas that need to be tested, especially the thickness, are relatively hidden factors that are easily overlooked.

2. Quality of surface coating for foundation pit specific guardrails.

Foundation pit guardrails generally require surface treatment to prevent corrosion and extend their service life. Common coatings include immersion coating, spray coating, electroplated zinc coating, hot-dip galvanized coating, etc. The plastic coating on the immersion surface is thicker and has better corrosion resistance; The sprayed surface is smooth, bright, and visually appealing; When the foundation pit guardrail comes into contact with liquid, plastic coating is superior to galvanized coating; Galvanized materials exposed to direct sunlight for a long time are better than those coated with plastic.

3. Distinguish and select the appropriate types of guardrails for foundation pits.

The use of foundation pit guardrails varies, and different types of foundation pit guardrails can be selected for enclosure use. The foundation pit guardrails usually use low-priced Dutch mesh, double-sided foundation pit guardrails, steel mesh, barbed wire, cow fence mesh, etc. Although they are widely used, their cost is not high; The enclosures used in factory areas, residential areas, and villas include zinc steel foundation pit guardrails, triangular bend foundation pit guardrails, frame foundation pit guardrails, etc; A separate type of municipal foundation pit guardrail is commonly used for municipal roads and greening projects; Sports venues such as stadiums often use several types of guardrails, including hooked mesh guardrails, frame foundation pit guardrails, and steel mesh guardrails; Commonly used on highways and railways are double-sided wire isolation nets and frame isolation barriers; Commonly used in landscape engineering include triangular bend foundation pit guardrails, enclosure Dutch nets, frame isolation nets, etc.

4. The diameter of the iron wire for the dedicated guardrail of the foundation pit.

The diameter of the wire is related to the amount of material used and is also a very important parameter that affects the quality and price of the foundation pit guardrail. The tool for measuring the diameter of wire mesh can be a thickness gauge or a vernier caliper.