We supply Stem-guided valve &Tri-arm seat,Stem-guided valve & Cross-arm seat,Three-wing guided valve & Full open seat,Four-wing guided valve & Full open seatvalves & seats etc to fit your drilling needs, suiting to almost all popular mud pumps in the world.
Jining Donghong Machinery Co., Ltd
www.dhparts.com
dh@dhparts.com
spareparts1960@gmail.com
Mobile/WhatsApp: 0086-18954079939
Skype: spareparts1960
API OSHA IADC OPEC RIG ZONE WORLD OIL Drilling Formulas
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