Model 型号  Diameter  加工管径       Tthickness 壁厚
ISF80          10-80mm                        25/50mm 
ISF150         65-150mm                     25/50mm 
ISF300         150-300mm                   25/50mm 
ISF450         300-450mm                   25/50mm 
ISF600         450-600mm                   25/50mm
ISF750         600-750mm                   25/50mm 
ISF900         750-900mm                   25/50mm 
ISF1050       900-1050mm                 25/50mm 
ISF1160       980-1160mm                 25/50mm
ISF1240       1040-1240mm                25/50mm 
ISF1300       1100-1300mm                25/50mm 
ISF1500       1300-1500mm                25/50mm
ISF1700       1500-1700mm                25/50mm 
ISF1910       1700-1910mm                25/50mm 
ISF2100       1900-2100mm                25/50mm
ISF2300       2100-2300mm                25/50mm