Precautions for storing straight seam steel pipes:
Most of the merchants did not use the straight seam steel pipe soon after purchasing it. So is there anything we need to pay attention to in the storage of straight seam steel pipes? The staff of straight seam steel pipe manufacturers reminded that the correct storage method of straight seam steel pipes will play a good protective role and avoid many problems. First, we need to classify and store the straight seam steel pipe, so that a lot of work can be avoided when it needs to be used. The straight seam steel pipe will rust during the storage process, so we also need to separate the rusted straight seam steel pipe from the good straight seam steel pipe when classifying. To avoid corrosion, the straight seam steel pipe needs to be isolated from acid and alkaline substances, to avoid the influence of these substances on the straight seam steel pipe. The erosion of rain is also the cause of rust, so we should not store it in the open air. Moisture will also have a great impact on the straight seam steel pipe, so we need to choose a dry and ventilated place. The staff of automobile tire manufacturers reminded us that it is good to have a cushion to isolate the wet ground under the straight seam steel pipe.
The series of diameter sizes specified by the straight seam steel pipe standard:
The nominal diameter of straight seam steel pipe refers to the series of diameters specified in the standard of straight seam steel pipe. For straight seam steel pipes, pipe fittings, valves, etc., the series specified by the standard are used to indicate the nominal straight seam steel pipe diameter. The components of the straight seam steel pipe for conveying fluids adopt the nominal diameter series. The Chinese straight seam steel pipe standard is expressed by an integer whose nominal diameter is in millimeters (mm).
The nominal diameter of the straight seam steel pipe standard is expressed in inches (in) or millimeters. When the nominal diameter of my country's straight seam steel pipe standard is 10mm, it is marked as DNIO. The working pressure of straight seam steel pipe refers to the pressure that pipes, fittings, valves, and other pipeline components bear under normal operating conditions. The design pressure of the straight seam steel pipe refers to the harsh conditions = the pressure in the combination of the set and the corresponding design temperature during the normal operation of the pipeline. The working temperature of the straight seam steel pipe is the temperature of the straight seam steel pipe under normal operating conditions and the design temperature of the straight seam steel pipe that may be endured under the corresponding design pressure during the normal operation process.
Heating physical deformation of straight seam steel pipe welded steel pipe:
The straight seam welded steel pipe is physically deformed by heating. If a straight seam welded steel is welded, the size of the data can be reduced to a large extent by the physical deformation of the straight seam welded steel pipe. The demand for straight seam steel pipe projects is relatively high, and the outer seam welding is the beginning of welding to ensure the penetration of large straight seam welded steel pipes, the beauty of straight seam steel pipe welds, and the continuous linearity of straight seam steel pipe welds. In the case of serious corrosion of steel, the edge should be cleaned strictly, and the shape of the weld should be controlled to ensure the shape of the weld. For steel pipes whose storage and transportation conditions have an important influence on welding, the severe corrosion of steel plates in the open air is inevitable, which will have a significant impact on the product.
Steel pipes can also be superimposed, on the other hand, from adjacent steel pipes to add lateral restraints; and secondly also supported by the following, fixed blocks of steel pipe supports. From the above analysis, the static accumulation of the steel pipe under gravity is mainly due to the action of three forces such as the steel pipe support and the horizontal binding of the upper steel pipe fixing block; however, during the transportation process, the steel pipe stress distribution changes in a large dynamic load. On the one hand, the steel pipe D/t (steel pipe diameter D, t steel pipe wall thickness) is relatively large, the stress of the stacked steel pipe located at the bottom of the engine room is relatively complex, the horizontal direction has been affected by the binding of the adjacent pipe, the longitudinal steel pipe is under its weight and fixed block, The combined effect of the force of gravity on the stacking rod also makes the horizontal and vertical alternation of the tube section possible to warp. If the steel pipe is shipped by mistake with the shorter dimension of the lower one, then the top and adjacent penstocks are required to be high.