About us

Chengdu Diyuan Tech (As known as Diyuan Industrial), Developed from one small private workshop which originally produce the tungsten carbide Wear parts for Oil & Gas industry. As Diyuan’s significant developing in past 10 years, we invested lots of capital into Valve Parts, Mechanical Seal for Pump and Valves application area.For now, we have three ISO9001:2008 Joint-Venture Facilities specialize in different part production.

Facility 1: Specialize in Tungsten carbide Wear Part especially for Downhole, Drilling, Pumping &Valve parts used in Oil&Gas industry, such as Tungsten Carbide Drill bits, Choke Bean Sleeve, API11ax Ball and Seats, Plug for Plug Valve, Tungsten Stem and Seats for choke Valve, Cage for choke Valve, Straight Wall Seats/Step Wall Seat/Choke beans and so on.

Facility 2: Specialize in surfacing process, such as HVOF TC coating and Weld Cladding TC or STL6#. We have the top of the line supersonic spraying equipment (Praxair/TAFA JP-8000) and fully-automated robotic application capabilities to offer the customer more precision application of coatings, used for on various valve components (Gate valve Components & Ball Valve Components) in support of a number of different industries including the oil & gas industry, Such as FC Valve Gate and Seat, Check Valve disc and Seats, API6A Hard Face Valve Ball and Seats.

Facility 3: Specialize in machining Valve&Pump Parts especially for Oil & Gas Industry; We provide precision machining and finish grinding to many valve components specifically gate valve parts (Gate and Seats kits, Stem, Sealing Ring, Pin, Nut), Ball valve parts(Ball and seats kits, Closure, Stem etc),Choke valve parts(Choke Bean, Choke Needle, Choke stem, Choke wrench Etc).  And we have the capability to provide precision ground, mate-lapped balls and seats and finish grind balls.

Main material including:

Forging Steel:A105,LF2,F6A,410,4130,4140,F304,F316,17-4PH,F44,F51,F53F55,F60,

Alloy:               Inconel ®, Monel ®, Tungsten, Stellite ® etc.

Rubber:           PEEK, PTFE