Nanjing Changxun Machinery Design & Manufacturing Co., Ltd. was established in January 2011 as a research and development-oriented manufacturing company. The Chairman, Ren Guobin, leads a technical team from state-owned military industrial units, crafting unique advanced equipment with exceptional design concepts and advanced manufacturing techniques to meet the needs of modern industrial development. Our products are exported to countries like Russia and Saudi Arabia, and the pipe fitting test machines designed and produced for Shanghai Aifu Co. and Qingdao Wode Pipeline Fittings Co., Ltd. have received high recognition from international experts.

Business Scope

Design, manufacturing, pre-sales, sales, and after-sales service for abnormal shape pipe fittings testing machines. Design, manufacturing, pre-sales, sales, and after-sales service for valve testing machines.

Design and production of specialized machines for automatic drilling, tapping, and threading. Modification of outdated equipment that does not meet industrial automation and environmental protection requirements.

Company Products

Valve Pressure Testers, Fitting Pressure Testers, Pipe Filters, and Elbow Pressure Testers. Particularly, our自主研发 Fitting Pressure Testers are designed for pressing non-standard large diameter pipe fittings at various angles, featuring hydraulic adjustments for blind plate height and angle, as well as the moving worktable and secure clamping of the workpiece. This ensures smooth operation, easy adjustments, and reliable clamping, significantly reducing labor intensity and increasing efficiency. Especially during export business operations and enterprise certification upgrades, this equipment is an indispensable choice!

Valve plate and body automatic machining machines are another unique automated processing equipment from Changxun. These are fully automatic production machines developed in-house for the valve industry's component processing. They are controlled by PIC programming, feature multi-station continuous processing, and are suitable for mass production of valve factory components, enhancing production output, ensuring stable quality, and improving production efficiency. They have obtained 2 invention patents for "Technical Novelty."

Technical Services

We tailor-made suitable solution designs for our customers' specific products according to their needs, until we produce qualified products. Additionally, the company undertakes the design and manufacturing of specialized machines for intelligent manufacturing of other traditional products, collaborating with numerous traditional enterprises to collectively enter the era of Industry 4.0.

Market analysts believe that with the rapid economic development of our country, the real estate market is booming, the construction of new towns is advancing, the renovation of old underground water supply networks in cities, and the development of oil and chemical enterprises, there is a significant increase in demand for valves and pipe fittings. This surge in demand is bound to drive a sharp rise in the need for valves and pipe fittings. However, the long-standing production model in our country, where manufacturers rush in en masse, has led to a chaotic market standard for valves and a wide range of quality issues, causing inconvenience to users. Therefore, since 2014, the government has been reshuffling the industry of valves and pipe fittings, unifying industry standards, raising the threshold for the industry, and prompting enterprises to meet standards; those that fail to do so will be eliminated.

Our company's valves and pipe fittings pressure testing machines are at the forefront of domestic technology, ensuring stringent quality standards. Our Long Xun products are suitable for the following types of enterprises and institutions:

New manufacturing facilities, facility expansions; retrofitting and upgrading of old enterprises; corporate certification; export-oriented enterprises; installation companies; equipment suppliers.

Based on the aforementioned market analysis, the company is strengthening its internal team by further hiring highly skilled technical talent and collaborating with various social institutions to form friendly partnerships. It is actively seeking diverse opinions and innovating its business model, fully prepared to embrace the next spring of China's manufacturing industry.