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Special Grades

The VA-Series of products are designed for special applications. They may or may not be addressed by the API-Specifications.

The VA-Series of products are designed for special applications. They may or may not be addressed by the API-Specifications. When the service application is addressed by an API grade, the VA-Series will exceed the API requirements. The practices available to achieve the stated goals include but are not limited to:

  • Steel with a special chemical composition
  • Special steel-making practices
  • Use of SPC during rolling and heat treatment
  • Reduced tolerances
  • Mechanical properties restricted to a more stringent range
  • Additional testing

Depending on the final use, appropriate processes are taken. 

H2S Service

  • VA-SS-75
  • VA-SS-80
  • VA-SS-90
  • VA-SS-95
  • VA-SS-110

H2S + CO2 Service

  • VA-FP-55 1Cr
  • VA-FP-70 1Cr
  • VA-FP-80 1Cr

High Collapse Service

  • VA-HC-55
  • VA-HC-80
  • VA-HC-90
  • VA-HC-95
  • VA-HC-110
  • VA-HC-125
  • VA-HC-130
  • VA-HC-140

Deep Well Service

  • VA-D-125
  • VA-D-130
  • VA-D-140
  • VA-D-150

Low Temperatur Service

  • VA-LT-55
  • VA-LT-80
  • VA-LT-95
  • VA-LT-110

Beside API standard thread connections voestalpine Tubulars produces premium connections for special applications.