Shanghai Wan Hui Machinery Co.,Ltd

Mr. Frank Fang and his partner founded Shanghai Wan Hui Machinery Co., Ltd in 2006. He started his career as a quality engineer in the late 1980s. Over the last 30 years, Frank and his team had taken quality control as a habit. They take every part into a deep inspection process. They know their strength is not design or innovation, but confirming and improving high-quality requirements for customers so that it makes the customers come back.

The mission: to be the quality expert of custom metal products.                                                                                                                                 

Thermowells, Test Wells & Probes

"Thermowells, test well and sample probe are used to guard temperature sensors such as thermocouples, thermistors and bimetal thermometers against damage from excessive pressure, material velocity and corrosion." Wanhui specialized in threaded thermowell bar stock made for over ten years. It takes one week to produce sample for regular size and two weeks for custom design.

single chamber orifice fitting

Orifice Fittings & Parts

"Orifice Fittings satisfy most flow measurement applications and are used in the most common flowmeter type today." They are Wanhui's featured products, especially single chamber fittings and universal parts for dual-chamber fittings (such as plate carriers, valve seats, and gear shafts). They are accordance with API MPMS Ch. 14.3/AGA Report No. 3, ISO 5167 and ASME B16.34.

Pressure Relief Valve Parts

"The primary purpose of a pressure relief valve or called a safety valve is the protection of life, property, and the environment. A pressure relief valve is designed to open and relieve excess pressure from vessels or equipment and to reclose and prevent the further release of fluid after normal conditions have been restored." Wanhui ONLY supplies the parts of pressure relief valve.

Pressure relief valve kit


Wan Hui Machinery is a professional mechanical engineering company. We have supplied single chamber orifice fitting, dual-chamber orifice fitting parts, thermowell, parts for pressure relief valve for over 13 years. With our deep knowledge of steel casting and iron casting, we are also invited to supply the custom-designed bracket, sprocket and disc pulley to the world-leading construction equipment companies. Our hydraulic fittings are based on Metric standard, American SAE, British BS, Japanese JIS, and German DIN. Many of our customers benefit from these superior products.