The standardized operation of building fasteners during transportation and storage is the key to ensuring their performance and avoiding premature damage. Specific precautions are as follows:
1、 Precautions during transportation
Packaging protection
Durable wooden boxes or pallets should be used for packaging, with a single box weight not exceeding 50kg, to avoid stacking too high and causing deformation of the bottom fasteners due to compression. Buffer materials (such as bubble wrap and cardboard) should be used to separate the fasteners to prevent scratches and deformation caused by metal parts colliding with each other. Special attention should be paid to protecting the bolt threads and the curved grooves of the fastener clips (to avoid dimensional deviations caused by collisions).
Loading specifications
Transport vehicles must be level, with fasteners stacked no higher than the carriage guardrail, and secured with ropes to prevent bouncing and slipping. Avoid mixing with sharp objects (such as steel bars and angle steels) to prevent fasteners from being pierced or scratched; Stay away from corrosive substances such as paint and chemicals to prevent rusting after contamination.
Transportation environment control
Rainproof cloth should be covered during transportation on rainy days to prevent fasteners from getting wet and rusting; Avoid prolonged exposure to sunlight during high temperature seasons to prevent accelerated aging of surface coatings (such as galvanized layers) on fasteners due to excessively high temperatures inside the packaging. During long-distance transportation, regularly inspect the packaging for damage and promptly reinforce any loose stacking.
2、 Precautions for storage process
Storage environment requirements
It needs to be stored in a dry and ventilated indoor warehouse, with moisture-proof mats (such as wooden boards or rubber mats) on the ground, at a height of ≥ 15cm above the ground, to prevent moisture erosion on the ground. The relative humidity of the warehouse should be controlled below 60% to avoid outdoor storage (if temporarily stored outdoors, double protection with a rain shelter and moisture-proof cloth is required).
Stack Management
Sort and stack according to type (right angle, rotating, docking fasteners), with a stacking height not exceeding 1.5m, and leave a passage of ≥ 0.5m between each stack for easy access. Do not stack heavy objects (such as steel pipes, cement bags) above the fasteners to prevent deformation of the fastener cover and bending of bolts caused by long-term compression.
Protection and maintenance
Before storage, check the condition of the fasteners, apply anti rust oil (such as Vaseline) to the threaded parts, and protect the bolt ends with plastic caps; For fasteners with slight rust, they need to be derusted before storage. Regularly (monthly) check the humidity of the warehouse and the condition of the fasteners. If rust or deformation is found, it should be dealt with in a timely manner to avoid the spread of rust.
Identification and recording
Mark the type, specification, and date of storage next to each pile of fasteners, following the principle of "first in, first out" to avoid performance degradation caused by long-term storage (such as increased brittleness of malleable cast iron due to long-term moisture).
Through the above measures, mechanical damage, corrosion, and performance degradation of fasteners during transportation and storage can be effectively reduced, ensuring that they meet size and strength requirements during installation and guaranteeing the safety of scaffold connections.
