We build trust on documentation, not slogans. Simoa is an integrated marine supply partner: we source through class-approved manufacturers and deliver traceable quality on every order. Here is exactly how certification and traceability work — including who holds each certificate.
We show only certificates we can document. Type approvals held by manufacturing partners are labelled with the holder. Per-order class surveys are labelled as survey records, not type approvals. Your QA team and class surveyors can verify everything directly.
Type approvals sit with the manufacturer. We make them transparent so you can verify the source.
Holder: Shanghai Univalve Marine Equipment Co., Ltd. (Kunshan, CHN). Simoa supplies these valves through this approved manufacturer.
Verify on veristar.comShell and seat pressure testing on every valve, hydraulic or air, before shipment.
Material test certificate traceable to heat number, supplied per shipment.
Positive Material Identification confirms alloy chemistry where required.
Complete packing list, markings and dimensional records with each batch.
The inspection items your QA team expects — with the standards behind them.
| Test | Method | Standard ref | What it confirms |
|---|---|---|---|
| Pressure test | Hydrostatic / Air | API 598 · GB/T 13927 | Shell & seat tightness at rated pressure |
| PT — Dye penetrant | NDT | ASTM E165 · EN 571 | Surface cracks in castings / welds |
| MT — Magnetic particle | NDT | ASTM E709 · EN 1290 | Surface & near-surface flaws (ferrous) |
| UT — Ultrasonic | NDT | ASTM E2375 · EN 584 | Internal flaws in thick sections |
| RT — Radiographic | NDT | ASTM E94 · EN 1435 | Internal integrity of critical welds |
| PMI | Spectrometry | ASTM E1476 | Alloy grade matches specification |
| Dimensional | CMM / gauges | Per product standard | Face-to-face, flange drilling per standard |
You send standard, size and class requirement. We match to an approved manufacturer and quote with MTC terms.
Where required, we arrange CCS/ABS/BV/DNV/LR survey with the manufacturer for your order.
100% pressure test, PMI and NDT performed; results recorded and bundled.
MTC 3.1, test records, packing list and survey certificates ship with the order — traceable end to end.
Tell us the product, class and survey requirement.
