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Douglas Chero
was established in 1974 to meet the demand for high quality forged
valves in the petroleum refining and production plants, offshore oil
and gas fields, power industry, fertilizer, chemical and desalination
plants all over the world.
Production capacity soured from 3,000 pieces in 1974 to current 40,000
pieces per month in our new factory with modern state of the art machining
facilities and manufacturing technology.
The factory is 25,000 sq.m. (278,000 sq.ft.) of which 9,000 sq.m.
(100,000 sq.ft.) are covered.
Forged Steel Valves
Product Range
Type
Gate, Globe/Stop/Needle, Piston/Ball/Swing-check, Drop & Block
check (Urea Service)
Body joining
Bolted and Welded bonnet (seal or full penetration), Bonnetless
and Pressure seal
Execution
Straight, Y pattern & Angle, Bellows Seals, Cryogenic service,
Vacuum service, OS&Y, ISRS, …
Motorized
with Electric, Pneumatic actuators,…
Sizes
1/4'' to 2'' reduced and full bore (Urea service up to 8")
End connections
SW, Threaded, BW, Hub and Flanged (integral type)
Rating
ANSI class150 to 4500 lbs
Materials
Carbon steel
- ASTM A105
Killed Carbon steel -
ASTM A350 / LF2
Alloy steel
- ASTM A182 - F5, F9, F11, F22, F91
Stainless steel
- ASTM A182/F304(L), F316(L), F317, F321, F347, F44
Special Alloy
- Monel, Inconel, Incoloy, Hastelloy, UNS, Alloy 20, Sanicro 28,
Titanium, …
Duplex
- ASTM A182/F51, F53, F55
Material Test Report
NDE, Mechanical and Chemical Analysis
Hydro Test
Air Test
Performance Test
Cryogenic Test
Special tests available on request
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