Wholesale Seamless Tube Seamless Steel Tube

  The four grades of 20, 20G, 20g and 20R are all carbon structural steels with 0.20% carbon content. But there are big differences between them, and the prices are quite different. If the design and use are not properly selected, destructive accidents will often occur in the heavy ones, and the light ones will also affect the service life or cause inferior use of superior materials.