What are the standards for the storage of anti-corrosion steel pipes

1. The appearance of anti-corrosion steel pipes entering and leaving the warehouse needs to be checked as follows:
① Check each pipe to ensure that the surface of the polyethylene layer is flat and smooth, without dark bubbles, pitting, wrinkles, or cracks, and the overall color needs to be uniform. The surface of the pipe should not be excessively corroded.
② The curvature of the steel pipe should be less than 0.2% of the length of the steel pipe, and its ellipticity should be ≤ 0.2% of the outer diameter of the steel pipe. The local surface unevenness of the entire pipe is less than 2mm.

2. The following points should be noted when transporting anti-corrosion steel pipes:
① Loading and unloading: Use a hoist that does not damage the pipe mouth and does not damage the anti-corrosion layer. All construction machinery and equipment must comply with regulations during loading and unloading. Before loading, the anti-corrosion grade, material, and wall thickness of the steel pipe should be checked in advance, and mixed loading is not suitable.
② Transportation: A thrust baffle needs to be set between the trailer and the cab. When transporting anti-corrosion steel pipes, they need to be tied firmly and protective measures should be taken for the anti-corrosion layer in time. Rubber sheets or some soft materials should be set between the anti-corrosion steel pipes and the frame or column, and between the anti-corrosion steel pipes for padding.

3. What are the storage standards:
① Steel pipes, pipe fittings, and valves need to be properly stored according to the instructions, and they need to be inspected during storage to avoid rust, deformation, and aging.
② In addition, some materials such as glass cloth, heat wrapping tape, and heat shrink sleeves need to be stored in a dry and well-ventilated warehouse.
③ Materials such as steel pipes, pipe fittings, and valves can be classified for open-air storage. Of course, the selected storage site needs to be flat and free of stones, and there must be no water on the ground. The slope is guaranteed to be 1% to 2%, and there is a drainage ditch.
④ The anti-corrosion steel pipes in the warehouse need to be stacked in layers, and the height needs to ensure that the steel pipes do not lose their stable shape. Stack them separately according to different specifications and materials. Soft pads should be placed between each layer of anti-corrosion steel pipes, and two rows of sleepers should be placed under the steel pipes on the lower layer. The stacked steel pipes should be >50mm from the ground.
⑤ If it is on-site construction, some storage requirements for pipes: two pads are required at the bottom, with a spacing of about 4m to 8m between them. The anti-corrosion steel pipe should not be less than 100mm from the ground. Flexible isolation materials should be placed between the pads and the anti-corrosion steel pipes, and between the anti-corrosion steel pipes.