Quality claims are only worth what a reviewer can verify. Everything on this page is stated the way it appears on the certificate, including the certificate numbers.
Certification
| Standard | Certificate number | Issued by |
|---|---|---|
| ISO 9001:2015 — Quality management | 01 100 2437759 | TÜV Rheinland |
| ISO 14001:2015 — Environmental management | 01 104 2537285 | TÜV Rheinland |
| ISO 45001:2018 — Occupational health & safety | 01 213 2537285 | TÜV Rheinland |
What we test, on every pressure assembly
| Test | Criterion |
|---|---|
| Hydrostatic pressure test | 1.5 × working pressure; no leakage, no permanent deformation |
| Visual and dimensional inspection | Against the approved assembly drawing |
| Weld visual inspection | Full circumference, both ends |
| Material traceability | Every pressure-retaining component traced to its mill test certificate |
Additional testing is available on request. Pneumatic, burst, fatigue cycle and positive material identification are done in our own works; helium leak detection, radiography, ultrasonic and dye penetrant are placed with a qualified subcontractor and certified back to you. See testing and inspection for the full list and the documentation that accompanies each.
Design basis
| Product | Standard |
|---|---|
| Corrugated hose and assemblies | ISO 10380; BS 6501 Part 1 where called for |
| Interlock (strip-wound) hose | ISO 15465 |
| Bellows expansion joints | EN 14917:2021 and EJMA 11th Edition |
Where a project runs to EN 13445, EN 13480, ASME B31.1 or B31.3, tell us at enquiry. See standards we build to.
Pressure basis
- Burst pressure is at least four times working pressure.
- Test pressure is 1.5 times working pressure, and every pressure-retaining assembly is tested before despatch.
- Catalogue pressures are at 20 °C and must be derated for service temperature — see temperature derating.
Third-party inspection
We work routinely with third-party inspection agencies and welcome witnessed testing. Nominate the agency and the hold points at enquiry so inspection is planned into the production sequence. Our ISO certification is held with TÜV Rheinland; witnessed inspection by another agency is arranged to your nomination.
Documentation
Test certificates with every pressure assembly. EN 10204 3.1 material certification on request, 3.2 where an independent inspector validates. Dimensional reports, welder and procedure qualification records, and manufacturing data books compiled to a project index — all available, all much easier if specified at enquiry rather than requested after despatch.