Use this article to identify the relevant standard, dimensions and purchasing fields before preparing an RFQ or order.
HV Is a Hardness Designation
In washer descriptions, 140HV, 200HV and 300HV identify hardness levels. They are not packaging codes or price tiers.
Select the hardness together with the product standard, nominal size, material and joint requirement.
Choosing Between Hardness Levels
RINGRHINO offers 140HV, 200HV and 300HV product options. The appropriate level depends on the product standard, nominal size, material and connection design.
Include Hardness in the RFQ
Standard and nominal size alone may not uniquely identify the product.
- Standard
- Hardness level
- Nominal size
- Quantity and delivery conditions
Reference Material
These references support further review of the standard name, edition, dimensions and related technical conditions.
- China National Standards Open System: GB/T 96.1-2002Used to verify the title, status, publication date and implementation date. The platform does not publish the full text because the standard adopts ISO content.
- China National Standards Open System: GB/T 97.1-2002Used to verify the standard title, status, publication date and implementation date.