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Principle requirements for stacking of spiral steel pipes

Principle requirements for stacking of spiral steel pipe

spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, extruded at regular temperature, and welded by automatic double-wire double-sided submerged arc welding process.
The spiral steel pipe sends the strip steel into the welded pipe unit, and the strip steel is rolled up gradually after rolling by multiple rollers to form a circular tube billet with an opening gap. 
Adjust the reduction of the extrusion roller to control the weld gap at 1-3mm, and make both ends of the welding port flush.

The principle requirement of spiral steel pipe stacking is to stack according to varieties and specifications under the premise of stable stacking and ensuring safety. 

Different types of materials should be stacked separately to prevent confusion and mutual erosion;

It is forbidden to store items that corrode steel around the stack of spiral steel pipes;

The bottom of the spiral steel pipe pile should be high, firm and flat to prevent the material from being damp or deformed;

The same material is stacked separately according to the order of storage;

For the spiral steel pipe sections stacked in the open air, there must be wooden pads or stone strips underneath, and the stacking surface is slightly inclined to facilitate drainage, and attention should be paid to placing the materials straight to prevent bending deformation;

The stacking height of spiral steel pipes shall not exceed 1.2m for manual work, 1.5m for mechanical work, and the stack width shall not exceed 2.5m;

There should be a certain channel between the stacks. The inspection channel is generally 0.5m, and the access channel depends on the size of the material and the transport machinery, generally 1.5-2.0m;

The angle steel and channel steel stacked in the open air should be laid down, that is, the mouth should face down, and the I-beam should be placed upright. The I-channel surface of the steel should not face upward, so as to avoid water accumulation and rust;

The bottom of the stack should be raised. If the warehouse is on a sunny concrete floor, it can be raised by 0.1m; if it is a mud floor, it must be raised by 0.2-0.5m. If it is an open field, the cement floor shall be cushioned with a height of 0.3-0.5m, and the sand and mud surface shall be cushioned with a height of 0.5-0.7m.
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