fireplaceI. Specifications:-ID: 125mm, 150mm, 175mm, 200mm-OD: 175mm,200mm, 225mm, 250mmII. Body:-Outer layerMaterial: stainless steelType: SS304/2BThickness: 0.5mmHardness: 200HVTensile strength: 690MPa/mm2-Inner layer:Material: stainless steelType: SS316L/2BThickness: 0.5mmHardness: 177HVTensile strength: 480MPa/mm2III. Flame-retardant material-Material: aluminum silicate-Resistance high temperature: 1,200 C