... (mm) : 10-30 , Width (mm): 500 or 1000 Length(mm) :10,000 or 20,0002) Pipe : Thickness(mm): 15-30 , Inner dia(mm) 16-89, Length (mm ... ) : 2,000 4. Remark :1) OD ovr 89 mm ,board would be better ... choose.2) Thermal insulation material's thickness over 25 mm adoption many layers laps ...