Wuxi Longterm Machinery Technologies Co., Ltd

Longterm Machinery (Wuxi Longterm Machinery Technologies)

Wuxi Longterm Machinery Technologies is a manufacturer of solar water tank machinery, LPG and LNG cylinder equipment, and steel drum welding equipment. The company states 25-30 years of experience (cited variously across its pages) and positions itself around customisable welding solutions: circumferential seam welding, longitudinal seam welding, nozzle welding, and jacket layer welding systems.

The company documents an unusually active international trade show and customer visit history, including the 2024 LPG Week in Cape Town, South Africa; the 6th Africa LPG Summit 2019 in Tanzania; the 32nd World LPG Forum & European Congress in Amsterdam (2019); the 4th Asia Pacific LPG Expo in the Philippines (2023); a visit from Italian customers to discuss a fire extinguisher making line (2024); and a visit from Pakistani customers regarding an LPG cylinder production line (2024). The company also states it was featured in a CCTV (China Central Television) interview regarding its auto welding line for LPG cylinders, and references a shipment of LPG cylinder machinery to a Brazilian customer.

What Longterm Machinery Makes

LPG Gas Cylinder Machineries

• Decoiler & Blanking Line
• Deep Drawing Machine
• Automatic Welding Line (stated: high-speed Panasonic MIG welder, no spatter left on cylinder surface, 360 pieces per 8 hours per machine)
• LPG Gas Cylinder Heat Treatment Furnace
• Hydro Testing Machine
• Shot Blasting Machine
• Zinc Metalizing Machine
• Powder Coating Line
• Air Leakage Testing Machine
• Neck Threading Machine (CNC threaded screw machine)
• Valve Change Machine (for filled cylinders)
• Silk Printing Machine / Screen Printer
• LPG Gas Cylinder Reconditioning and Requalification Machine

Hot Spinning Machine

• CO2 Fire Extinguisher Hot Spinning Machine
• CNG Tank/Cylinder Hot Spinning Machine
• Long Pipe for Vehicle Hot Spinning Machine
• Size range stated: 80mm-930mm; energy types: LNG, LPG, and electricity

Steel Drum Machineries

• Steel Drum Body Machineries (stated: full automatic line, 5-6 pieces per minute, standard sizes 200L/208L/201L/220L)
• Drum Cover & Bottom Manufacturing Machine
• Drum Cleaning Machine
• Steel Drum Painting Machine (including closed-top barrel painting booths)
• Flanging, Expanding & Seaming Machine
• High-speed 55-gallon drum making machine (stated: 8 pieces/min, for petrol or bitumen drums)

LNG Gas Cylinder Tank Machineries

• Longitudinal Seam Welding Machine
• Circumferential Seam Welding Machine
• Water Pipe/Nozzle Welding Machine

Water Heater Welding Line

• Longitudinal Seam Welding Machine
• Circumferential Seam Welding Machine
• Water Pipe/Nozzle Welding Machine
• Flange Welding Machine

Other

• CNG Gas Cylinder Production Line (seamless steel cylinder making)
• Fiber optic cable extrusion sheathing line, cable stranding machine (adjacent, non-core products)

Industries Served

• LPG cylinder manufacturing
• LNG and CNG tank/cylinder manufacturing
• Steel drum and barrel manufacturing (petrol, bitumen, general industrial)
• Fire extinguisher manufacturing
• Solar water tank manufacturing
• Water heater manufacturing

Why Buy From Longterm Machinery

• 25-30 years of experience in cylinder and drum welding equipment
• Genuinely active international trade show presence across Africa, Europe, and Southeast Asia (documented 2019-2024)
• Named customer visits from Italy and Pakistan, and a shipment case to Brazil
• Specific stated performance figures: 360 LPG cylinders per 8 hours (welding line), 5-6 steel drums per minute, 8 drums per minute (55-gallon high-speed line)
• Full range from raw coil (decoiler/blanking) through to finished, tested, printed cylinder or drum
• Customisable equipment to specific customer requirements

Frequently Asked Questions

What does Longterm Machinery make?
Complete LPG, LNG, and CNG gas cylinder manufacturing equipment (from blanking and deep drawing through welding, heat treatment, testing, coating, and printing), hot spinning machines for cylinders and tanks, and steel drum manufacturing lines (body, cover/bottom, cleaning, painting).

Where is Longterm Machinery based?
Wuxi National Hi-Tech Industrial Development Zone, Jiangsu Province, China.

How long has Longterm Machinery been in business?
The company states 25-30 years of experience across different pages.

What is a hot spinning machine used for?
Forming the ends of cylinders and tanks (CO2 fire extinguishers, CNG tanks, and long vehicle pipes) by spinning the metal under heat — Longterm states a size range of 80mm to 930mm.

How fast is Longterm's LPG cylinder welding line?
The company states 360 cylinders per 8-hour shift, using a high-speed Panasonic MIG welder with no spatter left on the cylinder surface.

What standard steel drum sizes does Longterm's equipment handle?
200L, 208L, 201L, and 220L are stated as standard sizes, with a stated line speed of 5-6 drums per minute (or up to 8 per minute on the high-speed 55-gallon line).

Does Longterm Machinery have international trade show and customer experience?
Yes — documented attendance at LPG industry events in South Africa, Tanzania, the Netherlands, and the Philippines, plus customer visits from Italy and Pakistan and a shipment to Brazil.