管道od        通径           定货号 
1/32"         0.25 mm         zx.5 
              0.50 mm         zx.5l 
1/16"         0.25 mm         zx1c 
              0.50 mm         zx1m 
              0.75 mm         zx1 
              1.00 mm         zx1l 
1/8"          0.75 mm         zx2 
              2.00 mm         zx2l 
1/4"          1.00 mm         zx4 
              4.60 mm         zx4l