What are the storage standards for anti-corrosion steel pipes

1. The appearance of anti-corrosion steel pipes entering and leaving the warehouse requires the following inspection:

① Inspect each pipe individually to ensure the polyethylene layer is smooth and flat, free of dark bubbles, pitting, wrinkles, or cracks, and has a uniform overall color. Excessive rust should not be present on the pipe surface.

② The curvature of the pipe should be less than 0.2% of the pipe length, and the ovality should be ≤ 0.2% of the pipe's outer diameter. Local unevenness on the pipe surface should be less than 2mm.

2. The following points should be observed during the transportation of anti-corrosion steel pipes:

① Loading and unloading: Use lifting equipment that does not damage the pipe ends and does not damage the anti-corrosion coating. All construction machinery and equipment must comply with regulations during loading and unloading. Before loading, verify the pipe's anti-corrosion grade, material, and wall thickness. Mixed loading is not recommended.

② Transportation: Thrust plates should be installed between the trailer and the cab. When transporting corrosion-resistant steel pipes, they must be securely tied, and the anti-corrosion coating must be protected. Rubber sheets or other soft materials should be used as cushioning between the corrosion-resistant steel pipes and the vehicle frame or columns, and between the corrosion-resistant steel pipes themselves.

3. What are the storage standards for corrosion-resistant steel pipes?

① Steel pipes, fittings, and valves must be properly stored according to the instructions and carefully inspected during storage to prevent rust, deformation, and aging.

② Materials such as glass cloth, heat wrap, and heat shrink sleeves must be stored in a dry, well-ventilated warehouse.

③ Steel pipes, fittings, and valves can be stored outdoors in separate areas. The selected storage area must be flat, free of rocks, and free of water. The slope must be between 1% and 2%, and there must be drainage ditches.

④ In the warehouse, corrosion-resistant steel pipes must be stacked in layers at a height that ensures the pipes maintain their shape. Stacking should be done separately according to specifications and materials. Place soft cushions between each layer of anti-corrosion steel pipes. Place two rows of sleepers under the lower layer of steel pipes. The stacked steel pipes should be >50mm above the ground.

⑤ During on-site construction, certain storage requirements for steel pipes are in place: Two supports should be used at the bottom, spaced approximately 4m to 8m apart. The anti-corrosion steel pipes must be at least 100mm above the ground. Flexible insulation should be used between the supports and the anti-corrosion steel pipes, and between the anti-corrosion steel pipes themselves.