20G high-pressure boiler tube is a common boiler tube material, which is mainly used in the manufacture of high-pressure boilers. The following is a detailed introduction to 20G high pressure boiler tube:
1. Specifications: The specifications of 20G high-pressure boiler tubes are generally 48-219mm in outer diameter and 3-40mm in wall thickness.
2. Wall thickness: The wall thickness of 20G high-pressure boiler tubes is very important for the safe operation of high-pressure boilers. Generally, the wall thickness is required to be above 4mm.
3. Mechanical properties: The tensile strength of 20G high-pressure boiler tubes is 410-550MPa, the yield strength is 245MPa, and the elongation is greater than 25%.
4. Chemical composition: The chemical composition of 20G high-pressure boiler tubes includes carbon (C) ≤0.17-0.24%, silicon (Si) ≤0.17-0.37%, manganese (Mn) 0.35-0.65%, phosphorus (P) ≤0.035%, Sulfur (S) ≤0.035%.
In conclusion, 20G high-pressure boiler tube is an important boiler tube material with good mechanical properties and high temperature resistance, and is widely used in high-pressure boiler and pipeline transportation fields.