If the large -diameter spiral steel pipe is processed to a certain length, bending must exist, and it is often encountered in the steel pipe. The large -diameter spiral steel pipe is due to uneven direction or such curved shapes at the bottom of the steel pipe, commonly known as "goose head curved".
The main reasons for bending are caused by local heat inspection, local water cooling; improper adjustment when correcting, severe rollers are severely worn out; bending caused by hanging and transportation; Essence
For large -caliber spiral steel pipes that occur, if it is bending exceeding the standard, you can perform secondary straight straight, but if you are unable to correct the "goose head curved", the removal should be given. In addition, during the production of large -diameter spiral steel pipes, because several rollers cannot be very accurate on a straight line, bending is easy to occur. The solution is to increase the number and distance of these rollers.
Spiral steel pipes are mainly used for water supply engineering, petrochemical industry, chemical, electricity, agricultural irrigation and urban construction. Used for liquid transportation: water drainage. Natural gas transportation: natural gas, steam, liquefied petroleum gas. Structural use: for pile tube and bridge; for docks, roads, building structures, etc.
