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About SYNHE
One works: foundry, machining, test, dispatch. API monogrammed under API Spec Q1 since 2024.
Zhejiang Xinghe Intelligent Control Technology Co., Ltd. is a valve manufacturer with its own casting shop, its own machining and test shop, and three API monogram licences under API Spec Q1.
The works sits in Qingtian County, Lishui, Zhejiang. Castings for the monogrammed lines are poured in our own foundry — WCB, WCC, CF8M, WC6, WC9, duplex and super duplex — then machined, assembled and tested in the same plant, so the bolted bonnet joint, seat fit and stem packing stay under one quality system.
The monogram programme is audited, not self-declared: API 600 licence 600-0432, API 6D licence 6D-2150 and API 609 licence 609-0298, all under API Spec Q1, verifiable on the API composite list at api.org/compositelist.
Credentials
| Licence | Detail |
|---|---|
| API 600 — API Monogram | 600-0432 · Bolted bonnet steel gate valves · 2024-05-24 → 2027-05-24 · American Petroleum Institute |
| API 6D — API Monogram | 6D-2150 · Ball valves, check valves, gate valves · 2024-05-24 → 2027-05-24 · American Petroleum Institute |
| API 609 — API Monogram | 609-0298 · Butterfly valves — Category B · 2024-05-24 → 2027-05-24 · American Petroleum Institute |
| ISO 9001 — Management system | [CONFIRM] · Design and manufacture of industrial valves · [CONFIRM] → [CONFIRM] · [CONFIRM] certification body |
| ISO 14001 — Management system | [CONFIRM] · Environmental management, valve manufacturing site · [CONFIRM] → [CONFIRM] · [CONFIRM] certification body |
| ISO 45001 — Management system | [CONFIRM] · Occupational health and safety, valve manufacturing site · [CONFIRM] → [CONFIRM] · [CONFIRM] certification body |
Send the piping class, not the part number
We check the dimensions, the material and the standard before we price — which is the part that decides whether the valve actually fits. RFQ answered within one working day.