1. Wrought iron guardrail material requirements: All cast iron guardrail materials and finished products must be entered with a material list and a quality guarantee certificate.

2. Before the construction personnel start work, according to their different jobs, carry out technical and safe construction education.

3. During the construction of the wrought iron guardrail, technicians will check and correct the illegal operation and other problems on the construction site in time. Put forward the quality rectification order and quality problem modification measures to ensure that the project quality meets the design requirements and acceptance specifications.

4. Strict implementation of engineering quality standards, cast iron guardrail varieties, specifications, models, thickness b must meet engineering and design requirements, full welding, grinding smooth and smooth. It is beautiful, the production size is accurate, the product is horizontal and vertical, and it meets the design requirements and acceptance standards.