NBN EN 10031 : 2003

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Appearance and soundness
   4.1 General
   4.2 Removal of surface defects
5 Tolerances on dimensions
   5.1 Tolerances on sides of the cross-section
       5.1.1 Rectangular semi-finished products
       5.1.2 Square or circular semi-finished products
   5.2 Diagonal tolerances
   5.3 Length tolerances
       5.3.1 Delivery in standard lengths
       5.3.2 Delivery in fixed lengths
6 Shape tolerances
   6.1 Straightness
   6.2 Twist
7 Tolerances on mass
   7.1 Tolerances on mass per unit length
       7.1.1 Case of billets
       7.1.2 Case of blooms and slabs
   7.2 Tolerance on batch quantities
Bibliography

Defines the tolerances on dimensions, shape and mass for semi-finished products intended to undergo hot forming by forging, i.e. blooms, slabs and billets made of: - general purpose steels, in accordance with EN 10250-1 to 5; - steels for pressure purposes, in accordance with EN 1022-1 to 5.