Pressure Testing (HDS)

NSF has the largest hydrostatic testing capacity in North America.

We utilize standard pressure testing methodologies to determine a material’s hydrostatic design basis (HDB) and hydrostatic design stress (HDS). These test methods allow NSF to forecast the long-term material strength to help ensure safe use in the field.

HDB: The categorized long-term hydrostatic strength (LTHS) in the circumferential or hoop direction, for a given set of end use conditions as established by ASTM D2837.

HDS: The recommended maximum hoop stress that can be applied continuously with a high degree of certainty that pipe failure will not occur.

We currently test to:

  • ASTM D1598 – Standard Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal Pressure
  • ASTM D1599 – Standard Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings
  • ASTM D2837 – Standard Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials or Pressure Design Basis for Thermoplastic Pipe Products
  • ISO 9080 – Plastics piping and ducting systems – Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation
  • CSA B137.0 – Definitions, General Requirements, and Methods of Testing for Thermoplastic Pressure Piping

Ready to Begin the Process?

Contact us with questions or to receive a quote.