about Us
DONGYING ZEYI Petroleum Equipment Co., Ltd. is an integrated manufacturer and supplier specializing in the R&D, production, and sales of petroleum equipment and spare parts. We provide one-stop solutions with both standard and customized options, backed by strict quality control and professional technical support. Serving customers worldwide across Europe, the Americas, the Middle East, Southeast Asia, and beyond, we are committed to delivering reliable products and responsive service.
Industry Solutions
LSNOI Lanzhou LS 3NB-1600 Mud Pump Crank Shaft Assembly Parts
Product Introduction This series of replacement parts covers all core matching components of the LSNOI 3NB-1600 mud pump crank shaft assembly, including main bearing end
LS NOV 3NB-1300C Mud Pump Electrical Liner Washer Spray Pump Parts List
Product Introduction This series covers all core replacement parts for the LS NOV 3NB-1300C mud pump electrical liner washer spray pump, including the fixed base,
LGF-1000 Mud Pump One-Year Recommended Parts & Special Tools
Product Introduction This all-inclusive LGF-1000 mud pump package includes three core segments: a full set of special maintenance tools for safe, efficient disassembly and assembly, a
Lanzhou LS 3NB Mud Pump Pulsation Dampener Replacement Parts
Product Introduction This series of pulsation dampener parts covers all replacement components suitable for Lanzhou LS 3NB500C, 3NB1000C, 3NB1300C, 3NB1600 mud pumps, including dampener main
Latest articles
07/17/2026
LGF-1000 Mud Pump One-Year Recommended Parts & Special Tools
Product Introduction This all-inclusive LGF-1000 mud pump package includes three core segments: a full set of special maintenance tools for safe, efficient disassembly and assembly, a 12-month recommended parts list covering all high-wear fluid end and power end components, and critical spare parts for emergency repairs, paired with official assembly drawings for technical guidance. Every part and tool is manufactured to match OEM specifications, eliminating compatibility issues and ensuring seamless use with LGF-1000 mud pumps. The curated annual parts selection accounts for typical
Lanzhou LS 3NB Mud Pump Pulsation Dampener Replacement Parts
Product Introduction This series of pulsation dampener parts covers all replacement components suitable for Lanzhou LS 3NB500C, 3NB1000C, 3NB1300C, 3NB1600 mud pumps, including dampener main body casing, pneumatic charging components, welding parts, bearing retaining plates, high-strength bolts, studs, nuts, various types of washers, O-rings, sealing gaskets, pressure gauges, cut-off valves, pipe caps and other matching parts. All parts adopt universal design for the four pump models, eliminating the trouble of model matching confusion; parts are made of high-strength alloy steel,
Lanzhou LS 3NB Mud Pump Power End Assembly Parts
Product Introduction This series of power end replacement parts covers all core components suitable for Lanzhou LS 3NB500C, 3NB1000C, 3NB1300C, 3NB1600 mud pumps, including pistons of various specifications, bi-metal liners, piston rod clamps, rid pistons, suction & discharge manifolds, valve bodies, valve seats, valve rings, high-strength studs, lock nuts, seals, spray hoses, spray pumps, liner end covers, locking plates, cages, gaskets, flanges and other matching fittings. All parts are made of high-strength alloy steel, wear-resistant polymer and bi-metal composite materials,
User comments
Oilfield Project Manager, Middle East
“We worked with THEEASY on a custom BOP project, and their OEM service was excellent. Quality and delivery exceeded our expectations.”
Field Operations Director, Central Asia
“We have cooperated with THEEASY on multiple projects. Stable quality, clear documentation, and professional service make them a trusted supplier.”
Procurement Manager, Southeast Asia
“THEEASY provided wellhead equipment and spare parts for our drilling program. Competitive pricing, stable quality, and on-time delivery.”
Engineering Manager, Europe
“Their engineering team supported us with customized mud pump solutions tailored to our project requirements. Communication and execution were excellent.”
