The relationship between the wall thickness of spiral steel pipe

　　The wall thickness of the spiral steel pipe is 6mm, and the spiral steel pipe manufacturer orders 5mm strip steel for production in the steel plant. That is to say, the difference of the bottom thickness of the spiral steel pipe manufacturer just tells you that we use the difference of the bottom thickness of the strip steel to produce, rather than the actual wall thickness of the spiral steel pipe is the difference of the bottom thickness of the strip steel. In fact, the thinnest part of the spiral steel pipe is not 5mm, because the strip steel is 5mm thick Its wall thickness is not uniform, and its thickness is 4.8mm, 4.9mm, 5.0mm, 5.1mm and so on. Generally, both sides of the strip steel are the thinnest place, and the spiral steel pipe produced is the thinnest on both sides of the weld. Therefore, the API 5L Schedule 80 Welded Spiral Steel Pipe we purchased is made of 5mm strip steel, and sometimes the thinnest place may be 4.8mm,

　　If the customer wants to be no less than 5mm wall thickness, say to the spiral steel pipe manufacturer, the spiral steel pipe manufacturer will order 5.25mm strip steel to produce spiral steel pipe for you. From the previous introduction, we can see that the actual wall thickness of the spiral steel pipe is not the nominal wall thickness of the strip steel, and if the customer wants the full thickness of the spiral steel pipe, he needs to order the strip steel higher than the nominal wall thickness to produce the spiral steel pipe.