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Proprietary Grades

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 grades are taken. 

Overview of Proprietary Grades

High Collapse Series:

VA-HC-N80-Q
VA-HC-L80-1
VA-HC-C90
VA-HC-R95
VA-HC-T95
VA-HC-C110
VA-HC-P110
VA-HC-Q125

On request also available in combination with low temperature grades.

Enhanced Grades:

VA-EP-N80-Q
VA-EP-L80-1
VA-EP-C90
VA-EP-R95
VA-EP-T95
VA-EP-C110
VA-EP-P110
VA-EP-Q125

On request also available in combination with low temperature grades.

Extreme Grades:

VA-XP-N80-Q
VA-XP-L80-1
VA-XP-C90
VA-XP-R95
VA-XP-T95
VA-XP-P110
VA-XP-Q125

On request also available in combination with low temperature grades.

Sour Service Grades:

  with High Collapse with Enhanced Properties
VA-SS-80 VA-SS-80-HC VA-SS-80-EP
VA-SS-90 VA-SS-90-HC VA-SS-90-EP
VA-SS-95 VA-SS-95-HC VA-SS-95-EP
VA-SS-110 VA-SS-110-HC VA-SS-110-EP
VA-S-110 VA-S-110-HC VA-S-110-EP
VA-S-125 VA-S-125-HC VA-S-125-EP

 On request also available in combination with low temperature grades.

Deep Well Series:

  with High Collapse
VA-D-125 VA-D-125-HC
VA-D-140 VA-D-140-HC
VA-D-150 VA-D-150-HC

 On request also available in combination with low temperature, enhanced or extreme properties.

Low Temperatur Series:

VA-LT-J55
VA-LT-K55
VA-LT-N80-Q
VA-LT-L80-1
VA-LT-C90
VA-LT-R95
VA-LT-T95
VA-LT-C110
VA-LT-P110
VA-LT-Q125

Mild Sweet Gas Series:

Ferrite / Pearlite Quenched & Tempered
VA-FP-55-1CR  
VA-FP-75-1CR  
VA-FP-80-1CR  
  VA-N80-Q-1CR / VA-N80-Q-3CR
  VA-L80-1-1CR 
  VA-R95-1CR / VA-R95-3CR
  VA-P110-1CR / VA-P110-3CR

API Grades

J55
K55
L80-1
L80-3Cr
L80-13Cr
N80-Q
C90
R95
T95
C110
P110
Q125

Sweet Gas Series:

VA-95-13CR
VA-110-13CR

Upon request in combination with High Collapse, Enhanced or Extreme Properties.