Square tube material is called alloy square tube in some states
2020-11-20
In what state is the material of square tube called alloy square tube: alloy square tube mainly with ferrite structure in service state. Chromium content is 11%~30%, with body centered cubic crystal structure. This kind of steel generally does not contain nickel, and sometimes contains a small amount of Mo, Ti, Nb and other elements. This kind of steel has the characteristics of high thermal conductivity, small shrinkage coefficient, good oxidation resistance, stress corrosion resistance, etc
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