Intelligent Electric Actuators & Valve Automation Solutions
Gas over oil Actuator : Pipeline Gas In Hydraulic Force Out
Power
50kN-500kN
Precision
4-10 bar
Speed
100mm-600mm
Protection
IP66/IP68
Engineered to Replace. Built to Outperform
Plug-compatible intelligent actuators serving 6 industries across 40+ countries
SIL3/Fail-safe
Critical Reliability for the Energy Value Chain
Engineered for SIL3 fail-safe control from -50°C to high-pressure gas fields. Our field-proven actuators power major pipelines and storage terminals across 15+ countries, including Rosneft and South Pars.
Applications of Actuators in the Industry
Comprehensive range of industrial automation products designed for reliability and precision
Beyond Standards.Engineered for Your Extremes
Delivering full OEM/ODM expertise for ultra-low temperatures down to -60°C, specialized communication protocols, and bespoke mounting solutions. From conceptual design to field-ready deployment.
Consult an ExpertWe Engineer It.
Electro-Hydraulic Actuator
Output: 3kN – 700kN
IP66/IP68 | SIL2/SIL3
Temp: -60°C to +70°C
Global Project Cases & Impact
Delivering excellence across continents
Countries Covered
Projects Completed
Global Partners
Featured Projects
China-Russia Eastern Gas Pipeline
China-Russia Eastern Line: Total 657 units provided for various sections.. China-Russia Eastern Gas Pipeline & West-to-East Gas Pipeline Lin
Gazprom - LTD ENGINEERING TECHNOLOGIES
172 Units. Strategic Natural Gas Pipelines in Russia. Delivered Electric Actuators (AVA/AVAT series) using 172 Units for Gazprom (PAO Gazpro
DEMCA Motion Control Project
71 Units. Water Infrastructure Development in South Africa. Delivered GREATORK Intelligent Electric Actuators using 71 Units for Various Mun
Certifications & Standards
Lloyd's Register
Marine Classification
IP68
Ingress Protection
ISO & OHSAS
Management Systems
CE
European Conformity
ATEX
Explosion Protection
About Greatork
Leading the global automation industry with precision engineering and innovative solutions
Excellence in Manufacturing
Greatork offers a comprehensive range of high-performance actuation solutions designed for critical industrial applications. Our product portfolio includes Intelligent Electric Actuators, Electro-Hydraulic Actuators, and Gas-Over-Oil Actuators. Each product line is engineered with a focus on reliability, precision, and durability, serving major industries such as oil & gas, petrochemical, power generation, and water treatment. Backed by international certifications and a commitment to innovation, we provide the optimal drive solution for any valve.
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Our global team is ready to provide technical support and custom solutions for your automation needs
Contact Information
Global Headquarters
Tefulong Group Co., Ltd.
Tefulong(Shanghai) Technologies Co., Ltd.
Factory Address: No.950, Feidu Road, Nicheng Town,
Pudong New Area, Shanghai, China
Global Partnerships Division
Ranshine (Shanghai) Energy Technologies Co., Ltd.
Partner Office Address: Room 408, Building 9, Guiguoyuan
No.471 Guiping Road, Xuhui District, Shanghai, China.
Global Service Hotline
+8615601713000 Eric
+8613901803381 David