L80 HCE

L80 TYPE1 HCE.png
Collapse properties of OCTG are influenced by a combination of pipe geometry such as Outer Diameter, Ovality, Wall Thickness and Eccentricity and also material properties such as Yield Strength and Residual Stresses. API collapse ratings are derived from simple theoretical models based on physical test results from various pipe manufactures and do not consider all influencing parameters. Further API collapse ratings are given for information purposes only. Controlling the most influencing parameters during production allows Vallourec to provide our customers with enhanced and guaranteed collapse properties. All collapse ratings are confirmed by standardized physical collapse tests with sample length of eight times diameter. 

MECHANICAL PROPERTIES

​Yield Strength
ksi (MPa)
​Ultimate Tensile
Strength ksi (MPa)
​Elongation
%
Hardness
HRC​​ 
Min.Max.​Min.Min.Max.​
 87.595 95API 
5CT
≤23​