Short answer. Both are multi-layer anti-corrosion systems, but the layer build-up and the internal protection they are paired with differ. There is no universally better option: the owner’s specification decides.
- Ask the designer which standard and edition each system must comply with before comparing offers.
- Confirm whether the quoted system covers the external coating only, or external coating plus internal lining.
- Field joint coating, pipe-end cutback and repair materials differ between systems and should be priced separately.
- Do not let a supplier substitute one system for the other on price alone.
For AWWA-based projects the external coating references are C215 and C213; TPEP-type systems are usually defined by the owner’s own specification.
Ask whether the owner’s specification was written for an AWWA-based package or an EN-based package; substituting a coating name without changing the associated lining and joint clauses is a common source of rejection.
See our 3PE coated SSAW steel pipe for the supply range. Send the coating clause from your specification and we will confirm clause by clause what we can supply. Send your enquiry.
