The spiral tube is also called a spiral steel pipe or a spiral tube. It is rolled into a tube blanket at the angle of the spiral line (called the forming angle) of the steel or low alloy structure steel belt at a certain spiral line, and then welded the pipe seams. , It can produce large steel pipes with narrow steel steel.
1. For the thickness and appearance of the spiral steel pipe, the regulations are not quite large in length, but it is not too scary. If the design is not harmful to all normal application foundations, there is no regulation. Come on.
2. There are gaps and telescopic on the surface layer. The surface layer of the spiral steel tube can be bumpy but there is a limited specification for this convex block.
The spiral steel pipes have the following advantages in the steel structure workshop. The screw steel pipe standards have strong habitual standards, that is, any standard, the spiral steel pipe can be produced, the length of the spiral steel pipe can be randomly, the longest can be achieved by 30 meters, the spiral steel pipes can be achieved. It can also be made into a courses, which is better than slot steel and cheaper.
