What is spiral steel pipe

The outer diameter of the tube of the spiral welded pipe is indicated by the letter D, followed by the size and wall thickness of the outer diameter. For example, a seamless steel pipe with an outer diameter of 105, with a wall thickness of 6 mm, is represented by D107*5, and the plastic pipe is also With the outer diameter, such as De63, other such as reinforced concrete pipe, cast iron pipe, galvanized pipe, etc., are represented by DN, which is generally expressed in the nominal diameter in the design drawings. The nominal diameter is designed for the convenience of design, manufacture and maintenance. One of the dimensions, also known as the nominal diameter, is the specification of the tube (or fitting).
Spiral welded pipe between the concrete and concrete should leave a certain channel, check the width of the track is generally about 0.5m, access to the width of the channel depending on the size of the material and transport machinery, usually 1.5 to 2m
The stacking height of spiral steel pipe, manual operation does not exceed 1.2m, mechanical operation does not exceed 1.5m, width is not more than 2.5m
Such as spiral steel pipe stacked in the open, must be below the spiral steel pipe to prevent wood mats or bars, etc., and the surface should be slightly tilted, in order to facilitate drainage, and pay attention to whether the steel pipe is straight, prevent the bending deformation of the steel pipe spiral welded pipe is generally stronger than The straight seam welded pipe is high, and a narrower blank can be used to produce a larger diameter pipe, and a pipe with a different diameter can also be produced using a blank of the same width. However, compared with straight seam pipes of the same length, the weld length increases by 40 to 100%, and the production speed is low. After cutting into a single steel pipe, a strict first inspection system is required for each of the first three pipes of each batch to check the mechanical properties of the weld, the chemical composition, the fusion condition, the surface quality of the steel pipe, and the inspection and repair after non-destructive inspection to ensure that the pipe manufacturing process is qualified. Only officially put into production. Spiral welded pipe production process is simple, high production efficiency, low cost and rapid development.
The height of the bottom of the spiral welded pipe according to the detailed situation, if the warehouse is a rising cement floor, the height can be 0.1m; if it is a mud, it must be 0.2 to 0.5m. If it is stored in open air, the height of the cement floor should be about 0.3 to 0.5m, and the sediment floor should be 0.5 to 0.7m.