Main Products
We manufacture differential-pressure primary elements following the standard shapes of each ISO 5167 part, to catalog specifications.
We carry out design, machining, welding and inspection ourselves at our plant in Hwaseong, Gyeonggi-do, and supply ISO 5167-based orifice plates, venturi tubes, nozzles, wedge meters and pitot tubes to plants in Korea and overseas.
No exaggeration — just appropriate technology that fits your site. Daehan Instruments is a manufacturer that designs and builds its own differential-pressure flow measurement elements and temperature sensors.
We design and manufacture in-house differential-pressure primary elements such as orifice plates, venturi tubes, flow nozzles, wedge meters, averaging pitot tubes and annular venturi meters, as well as condensate pots, flow conditioners and temperature sensors.
The cone-type venturi meter and averaging pitot tube are our own developments, and we hold China government CPA type approval (cone meter · wedge meter · venturi tube), ABS welding procedure approval and ASME PP · S · U Stamps. We operate a corporate R&D center and hold 9 Korean registered patents and 1 US patent.
We have supplied steel, power, petrochemical and offshore plants as well as municipal sewage treatment plants, and supply exhaust venturi tubes for eco-friendly marine engines as a tier-1 supplier to HSD Engine (formerly Doosan Engine).
| Company | Daehan Instruments Co., Ltd. |
|---|---|
| Founded | November 1991 |
| Head office · Plant | 18-21, Muha-ro 36beon-gil, Hwaseong-si, Gyeonggi-do, Korea (18279) |
| Business | Design and manufacture of differential-pressure flow meters (primary elements) · temperature sensors · pressure vessels |
| Quality · Environment | ISO 9001:2015 · ISO 14001:2015 |
| Contact | ✉ [email protected] · ☎ 031-357-8431 (Sales, ext. 1) |
We manufacture differential-pressure primary elements following the standard shapes of each ISO 5167 part, to catalog specifications.
Because we build everything in one place without relying on subcontractors, we control delivery and quality directly.
Large-bore precision machining
Hwaseong plantOnly certifications and registered patents confirmed by official documents are listed.
Design and manufacture of pressure vessels, temperature sensors and flow elements (ICR)
Pressure piping and pressure vessel fabrication certification
Welding procedure (WPS/PQR) inspection witnessed by the American Bureau of Shipping
Cone meter DHAV-CC01 (2003-F240) · Wedge meter DHWM-F/T (2010-F145) · Venturi tube DHOV-FF (2011-F249)
Averaging pitot tube type flow measuring device (incl. US patent), concentric-body type flow meter, venturi flow meter, flow meter combined with check valve, etc.
KOSHA explosion-proof certification · INNO-BIZ · Direct Production Confirmation (flow meters) · Materials, Parts & Equipment specialist company · USD 3 Million Export Tower
We have supplied differential-pressure flow meters to plant projects in Korea and overseas. Representative sectors and customers are summarized below.
POSCO Gwangyang and Pohang blast furnaces, FINEX, CCPP · Hyundai Steel blast furnaces — orifice plates, venturi tubes, annular venturi meters
POSCO Power CCPP · Shin-Boryeong · KSTAR fusion research device — orifice plates, restriction orifices, sheathed thermocouples
Refineries and petrochemical plants in Korea and overseas, including Sinopec · CNPC · CNOOC (China) and Petronas (Malaysia)
Offshore plants including BP Clair Ridge (Shetland, UK) · exhaust venturi tubes for HSD Engine eco-friendly marine engines
Municipal sewage treatment plants including Chungmu, Hwado, Namhae, Gimcheon, Gijang, Mokpo and Wonju
China · Indonesia · Malaysia · Thailand · India · Myanmar · Japan · Brazil · Uzbekistan · Bahrain · United Kingdom · Morocco · Nigeria · Congo and others
※ Based on company delivery records. Detailed project references are available on request.
"We develop the products the field needs with appropriate technology,
and supply flow measurement products of good quality at reasonable prices."
Based on sincerity in technology and trust with our customers, we pursue steady and sustainable growth.
