Dimensional Tolerances (DIN)
DIN 2605/2615/2616/2617/2609 EN10253-1
da in mm Limit Deviations for Outer Diameter Tolerance 
    Subject  on  Q
    to agrement Circularity
    ±1% da     Within the     
£ 100 (with a maximum of  ±0.4mm specified  1% of dimension
  ±0.5mm)     tolerance  (with a maximum
100<da £200   ±1% da  ±0.5% da on diameter of 1mm)
>200   ±1% da  ±0.6% da 2%    
Nominal Limit Deviations for Dimension
Size 45 Elbow 90 Elbow 180 Bend Cap Tee Reducer
DN b b 2b h a and b l1
15~65 ±6.0 ±2.5 ±8.0 ±4 ±2.0 ±2.5
80~100 ±7.0 ±3.0 ±9.0 ±3.0
125~200 ±8.5 ±3.5 ±10.0 ±7 ±3.5
250 ±9.5 ±4.0 ±14.0 ±3.0 ±4.0
300~450 ±12.0 ±5.0 ±5.0
500~600 ±14.5 ±6.0 ±16.0 ±6.0
700  To Be Agreed ±10
800 ±19.0 ±8.0 ±5.0
900~1200 ±8.0
Nominal Thickness      s       Limit Deviations for Wall Thickness s      
Size DN   DIN       EN10253-1  
15~400 s£4mm -12.5%    +15%          -0% +20%
s>4mm -12.5%  +15%
450~600 Any Not Specified
700~1200 s£10mm -0.35mm +15%
s>10mm -0.5mm