Nowadays, many spiral pipe manufacturers have not reached standard regulations on the surface through the production and processing of spiral pipes, but there are still successive spiral tubes. Let's learn about some requirements for the surface of the pipeline about the surface of the pipeline.
Although the standard specifies the "surface smooth" of the spiral tube, some manufacturers in the manufacturing, the surface of the steel pipes caused by various reasons is as high as 10 types. Many problems include: gaps (cracks), hair pattern, hair pattern, inner folding, outer folding, rolling, outer trails, outer layers, crusts, recessed, convex buns, hemp (hemp surface (quilted, outer trails, outer trails, outer trails, outer trails, outer trails, outer trails, outer trails, outer tracts, outer tracts, outer tracts, outer tracts, outer straight laminates, scabs, recessed bags, hemp noodles (hemp surface (hemp surface (hemp surface ), Scratch (scratch), internal spiral roads, external spiral roads, green lines, corrected concave, roller prints, etc.
In the above problems mentioned above, some problems are very serious to the harm of the steel pipe performance indicators of the spiral tube. Delivery, scabs, stretching, convex bags, etc.; Some problems directly affect the performance indicators of steel pipes less than relatively small, and are called routine issues, such as spiral tube pipes (noodles), blue lines Touch) Wounds, mild inner trails and external straight trails, mild internal spiral trails and external spiral roads, orthodox concave, roller prints, etc.
Although some very mild and practicality of the spiral tube directly affects extremely small problems can be retained on the steel pipe, the depth and length (size) of the standards still have very stringent limitations on the depth and length (size) of its problems.
The method of removing or grinding for harmful spiral tubes on the surface of the harmful spiral tube is completely eliminated. When the problems on the surface of the steel pipes that can be used for repair are completed, the depth of the standard ground and the shape of the grinding point must meet the standard standards. Therefore, in order to better improve the surface quality of the spiral tube, sometimes the spray (sand), sand grinding or machine processing is also completed on the inside and outside surface of the steel pipe.
