About Us

Wuxi Longterm Machinery Technologies Co., Ltd

Wuxi Longterm Machinery Technologies Co., Ltd is the leading supplier of complete turnkey solutions for the LPG cylinder manufacturing. The whole process from blanking to powder coating and finishing line. With professional technical back ground, we have been engaged in welding research since 1975. We have fully automatic line from trimming, joggling, valve bung welding, handle and bottom welding to automatic MIG body welding, the whole line involves only 7 workers with output 2000pcs per 8hrs. The circumferential seam welding machines are completed with both video and laser tracing devices which ensure good welding quality continuously. Our machine has been exported to many country, such as America, Russia, Turkey, Vietnam, India, Thailand, Bangladesh, South Africa, etc..They are popular all over the world and bring big profit by saving a lot of labor, electricity and time.



Our workshop




Some of our customers


  • Our company has a long history in LPG industry. The equipment of LPG cylinder production line is popular all over the world, and won a great recognition from our esteemed customers.
  • We have an excellent management team; Foreign trade group consists of young adults who are energetic and prosperous. We are ready to face challenges and overcome all problems ; Technical group isvery experienced, as our engineers are all highly experienced technicians in LPG machinery industry. They provide powerful support for our project and always devote themselves to improving the technology.
  • We are especially good at resource integration. We have established a reliable after-sales service guarantee system, in order to help customers get best and fasted solution of any problems.
  • Our company are active in participating the significant forum and summit in LPG domain, including LPG World Forum, AEGPL European LPG Forum and Asia, Africa LPG Summit, etc.. We are looking forward to cooperating with the customers from all the world.



  • Our company developed automatic welding system completed with automatic laser and video tracing devices with help and support from many famous research institutes with great research and development strength and cooperation from Panasonic  Japan, the famous world's top 500 companies. Our automatic body welding line is patent protected with core technology and filled the gap in the domestic industry and opens up Europe. International markets such as Asia, America and Africa,etc..
  • The company's patented automatic welding system has smooth welding seams, less spatter, strong permeability and fast welding speed. The welded seam is firm, and the X-ray film pass rate is 98%, which greatly improves the product quality.
  • The company's patented automatic welding system has high degree of automation, stable welding quality and greatly reduced labor; on the other hand, it also greatly saves consumables such as welding wire and reduces costs. Reduced staff which greatly enhances the competitiveness of customers in the market.



Auto. single-head body welding machine

  • Welding speed: 360 pcs/8 hours/set
  • Loadng & Unloading time: 20 Second/pcs
  • Welding wire consumption: Save 40% welding wires compared with SAW
  • Power consumption: Save 40% electricity compared with SAW

Auto. double-head body welding machine

  • Feature: Cylinder size: 20, 25, 33, 35, 45, 50 etc.
  • Capacity: 250 pcs/8 hours Welding process:
  • Double-head MAG wleding, with vision tracking device to inspect the weld.





Our world-class R&D team ensures that we use the most innovative design and manufacturing techniques for our machines. We also offer professional field installation, commissioning, and training to confirm that each client is delivered high-quality machinery and is able to use it properly.



Our diligent employees are great contributors to our success, and we believe that taking care of them is an investment in our long-term success. We operate working environments that are safe and friendly, and we encourage our workers to take advantage of all of our learning and advancement programs.