Key points for transportation, installation, and storage environment of buried arc steel pipes

Submerged arc steel pipes play a key role in many engineering construction industries, such as petroleum, natural growth gas transportation, and urban pipeline construction, due to their excellent welding performance and high strength. Reasonable control of its transportation, installation, and storage environment is crucial for protecting the quality of steel pipes, extending their service life, and ensuring the safety of the project.

Transportation environment: meticulous care to prevent damage

During the transportation of buried arc steel pipes, it is necessary to create a safe and stable environment in all directions. The selection of transportation vehicles is the first step, and suitable vehicles should be selected based on the specifications and length of the steel pipes to confirm that the vehicles have good stability and load-bearing capacity. The cargo compartment of the vehicle should be flat, clean, and free of sharp protrusions to prevent scratching the surface coating of the steel pipes during transportation.

When loading, a reasonable loading method should be adopted. For longer steel pipes, one-on-one lifting tools such as slings or soft steel wire ropes should be used to avoid direct lifting with hard steel wire ropes to prevent damage to the surface of the steel pipe. At the same time, it is necessary to confirm that the steel pipes are neatly and stably placed in the carriage, and can be fixed with wooden wedges, brackets, etc. to prevent rolling and collision during driving. For steel pipes stacked in multiple layers, suitable shims should be placed between each layer to ensure good ventilation between protective layers. The position of the shims should be aligned vertically to ensure even stress distribution on the steel pipes.

The planning of transportation routes cannot be ignored either. It is advisable to choose roads with good and flat conditions, avoid bumpy and rough sections, and minimize damage to steel pipes caused by severe vehicle vibrations. During transportation, drivers should drive carefully, maintain a constant speed, avoid sudden braking and sharp turns, and ensure the safety of the steel pipes during transportation.

Installation environment: clean and standardized to ensure quality

The installation environment of buried arc steel pipes directly affects the installation quality and subsequent use effect. The installation site should be kept clean and orderly, with debris and obstacles removed to provide a good workspace for installation work. For the installation of underground pipelines, trench excavation work should be done in advance, and the size and slope of the trench should meet the design requirements to confirm that the steel pipe can be smoothly placed and accurately positioned.

Before installation, it is necessary to conduct a comprehensive inspection of the steel pipe to confirm that its surface is free of scratches, cracks, and other defects, and that the interior is clean and free of debris. For steel pipes that require welding connections, the welding environment should meet certain conditions. The construction site should maintain good ventilation and avoid welding operations in damp and dusty environments to prevent defects such as porosity and slag inclusion in the weld seam. At the same time, it is necessary to control the welding temperature and avoid welding in low or high temperature environments, which may affect the welding quality.

During the installation process, it is necessary to strictly follow the design drawings and construction specifications for operation. The connection of steel pipes should be tight and firm, and the sealing performance should be confirmed to be good. For steel pipes that require anti-corrosion treatment (mainly based on actual reports), anti-corrosion (mainly based on actual reports) operations should be carried out in a timely manner after installation. Suitable anti-corrosion (mainly based on actual reports) materials and construction processes should be selected to protect the quality and thickness of the anti-corrosion (mainly based on actual reports) layer to meet the requirements.

Storage environment: Suitable for stable and extended lifespan

The storage environment of buried arc steel pipes has a profound impact on their quality. The storage site should be chosen in a flat, dry, and ventilated area, avoiding low-lying, damp, and water prone areas to prevent steel pipes from getting damp and rusting. The site should have a good drainage system to ensure that rainwater can be discharged in a timely manner and avoid steel pipes being soaked in water for a long time.

When storing steel pipes, they should be classified according to specifications, models, and materials, and clearly labeled for easy management and retrieval. The storage method can be stacking or setting up storage racks. When stacking, the bottom layer should be leveled, the wooden pads should be practical, and the height of the wooden pads should be moderate, generally not less than 150 millimeters, to protect the good ventilation at the bottom of the steel pipe. Each layer of steel pipes should also be separated by wooden pads, and the number of layers should not be too many to avoid deformation of the bottom steel pipes due to excessive stress.

During storage, the steel pipes should be regularly inspected to see if there is any rust, deformation, or other issues on their surface. If any problems are found, corresponding measures should be taken in a timely manner, such as rust removal, correction, etc. At the same time, protective measures should be taken to prevent steel pipes from being exposed to direct sunlight, rain, and chemical substances, thereby extending their service life.