CHINA PETROLEUM NATURAL GAS GROUP CORPORATION

Yongjia Deli Electromechanical Hydraulic Industry Co. is a specialized manufacturer and trading company based in Wenzhou, China, with a history dating back to the 1980s. Operating under the recognized "Nanxijiang" brand, the company is an appointed manufacturer by the China Valve Association and serves as a class-I supplier to the China Petroleum & Natural Gas Group Corporation. The company maintains an ISO 9001 certified quality management system and holds independent import and export rights.

The company specializes in the design and production of high-tech valve testing and repair equipment, including hydraulic valve test benches, valve grinding machines, and ball grinding machines. Their advanced testing systems integrate mechanical, hydraulic, and electrical components with PLC control and remote monitoring capabilities. These solutions are engineered to meet rigorous international standards such as API 598, 6A, 6D, and GB/T13927-2008. Their equipment is capable of handling extreme specifications, including water test pressures up to 210MPa and gas test pressures up to 76MPa.

As an OEM provider with dedicated R&D capabilities, Yongjia Deli serves a diverse range of industries including petroleum, petrochemical, natural gas, power stations, and waterworks. Their products are utilized globally, with an export footprint spanning North America, Europe, Southeast Asia, and the Middle East. The company is committed to delivering professional technical support and high-performance machinery for the maintenance and quality assurance of high, medium, and low-pressure valves.

Yongjia Deli Electromechanical Hydraulic Industry Co.

Valve Seat Grinding Machine, Find Details and Price about Valve Grinding Machine Valve Lapping Machine from Valve Seat Grinding Machine - Yongjia Deli Electromechanical Hydraulic Industry Co.

Valve Seat Grinding Machine

Deli Valve Test Benches Test Machine for Testing Butterfly Valves (flange, wafer, lug end butterfly valves), Find Details and Price about Valve Test Machine Valve Pressure Testing Machine from Deli Valve Test Benches Test Machine for Testing Butterfly Valves (flange, wafer, lug end butterfly valves) - Yongjia Deli Electromechanical Hydraulic Industry Co.

Deli Valve Test Benches Test Machine for Testing Butterfly Valves (flange, wafer, lug end butterfly valves)

Deli Valve Test Benches Test Machine for Testing Safety Valves (flange or thread end safety valves), Find Details and Price about Valve Test Machine Valve Pressure Testing Machine from Deli Valve Test Benches Test Machine for Testing Safety Valves (flange or thread end safety valves) - Yongjia Deli Electromechanical Hydraulic Industry Co.

Deli Valve Test Benches Test Machine for Testing Safety Valves (flange or thread end safety valves)

Safety Valve Test Bench Test Machine for Testing Flange or Thread End Safety Valves, Find Details and Price about Valve Test Machine Valve Pressure Testing Machine from Safety Valve Test Bench Test Machine for Testing Flange or Thread End Safety Valves - Yongjia Deli Electromechanical Hydraulic Industry Co.

Safety Valve Test Bench Test Machine for Testing Flange or Thread End Safety Valves

Digital Display Sphere Grinder for Precision Grinding Tasks, Find Details and Price about Ball Grinding Machine  Ball Lapping Machine from Digital Display Sphere Grinder for Precision Grinding Tasks - Yongjia Deli Electromechanical Hydraulic Industry Co.

Digital Display Sphere Grinder for Precision Grinding Tasks

Deli Sphere Grinding Machine with Adjustable Speed Control, Find Details and Price about Ball Grinding Machine  Ball Lapping Machine from Deli Sphere Grinding Machine with Adjustable Speed Control - Yongjia Deli Electromechanical Hydraulic Industry Co.

Deli Sphere Grinding Machine with Adjustable Speed Control

Deli Ball Grinding Machine Sphere Grinder (Grinding speed adjustable and digital displayed), Find Details and Price about Ball Grinding Machine  Ball Lapping Machine from Deli Ball Grinding Machine Sphere Grinder (Grinding speed adjustable and digital displayed) - Yongjia Deli Electromechanical Hydraulic Industry Co.

Deli Ball Grinding Machine Sphere Grinder (Grinding speed adjustable and digital displayed)

High-Speed Adjustable Deli Ball Grinder with Digital Control, Find Details and Price about Ball Grinding Machine  Ball Lapping Machine from High-Speed Adjustable Deli Ball Grinder with Digital Control - Yongjia Deli Electromechanical Hydraulic Industry Co.

High-Speed Adjustable Deli Ball Grinder with Digital Control

Adjustable Speed Deli Ball Grinding Machine for Efficiency, Find Details and Price about Ball Grinding Machine  Ball Lapping Machine from Adjustable Speed Deli Ball Grinding Machine for Efficiency - Yongjia Deli Electromechanical Hydraulic Industry Co.

Adjustable Speed Deli Ball Grinding Machine for Efficiency

Digital Display Deli Ball Grinder for Precision Grinding, Find Details and Price about Ball Grinding Machine  Ball Lapping Machine from Digital Display Deli Ball Grinder for Precision Grinding - Yongjia Deli Electromechanical Hydraulic Industry Co.

Digital Display Deli Ball Grinder for Precision Grinding

Valve Test Bench Test Machine (Screw type with valve bore/internal sealing) for Testing Shut-off Valves, Find Details and Price about Valve Test Bench Valve Test Machine from Valve Test Bench Test Machine (Screw type with valve bore/internal sealing) for Testing Shut-off Valves - Yongjia Deli Electromechanical Hydraulic Industry Co.

Valve Test Bench Test Machine (Screw type with valve bore/internal sealing) for Testing Shut-off Valves

Precision Valve Test Bench for Shut-off Valve Sealing, Find Details and Price about Valve Test Bench Valve Test Machine from Precision Valve Test Bench for Shut-off Valve Sealing - Yongjia Deli Electromechanical Hydraulic Industry Co.

Yongjia Deli Electromechanical Hydraulic Industry Co.

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