Model NO.: HLT
Condition: New
Capacity: 333PCS/8hours
Vessel Diameter: Dn250-800mm
Wall Thickness: 2.5-8mm
Welding Torch: Double or Single Welding Torch
Cylinder Material: HP295
Noise Level: <45dB
Warranty: 1 Year After Delivery
Cylinder Size: 6kg, 12kg, 25kg, 48kg, or Customized
OEM & OEM: Ok
Trolley Motion Speed: 100-500mm/Min
Trademark: LONGTERM
Transport Package: Standard Seaworthy Package
Origin: China
HS Code: 830710000
Circumferential Welding Machine for 15kg Cylinder ProductionA. Product Description
The pressure cylinder welding machine is designed for MAG welding of LPG, LNG cylinders, fire extinguisher bottles, and other similar containers. It ensures high-quality, consistent welds while maintaining efficiency and durability. The machine supports a wide range of vessel diameters (DN250–800mm) and wall thicknesses (2.5–8mm), making it ideal for various industrial applications.
It features a double or single welding torch setup, allowing flexibility in production. The welding speed varies depending on the selected welding system, such as Panasonic or Lorch, ensuring optimal performance for different materials like carbon steel or stainless steel.
Production capacity: approximately 333 units per 8 hours

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Model |
Auto Circumferential & Linear Welding Machine |
Features | Strong and reliable structure & design Fast welding speed (0.8m/min) Low noise level (<45dB) Easy operation Water cooling with copper backing covered with Argon gas |
Applications | Our Circumferential Welding Machines are most commonly used in tank production. ?   LPG cylinder ?   LNG gas station ?   Cryoease ?   Storage tank |
Range of Working Piece | Working piece thickness: 2.5–6mm Diameter: 250–400mm Length: ≤1500mm, customizable |
Custom Designed Equipment Components | We can incorporate necessary control systems, including PLCs, push buttons, emergency stops, safety sensors, alarms, and data acquisition tools. |
Standard Accessories | Water-cooled welding torch Automatic cycling water tank Panasonic welding machines |
Packing Details | Plywood cases/boxes |
MOQ | 1 set |
Warranty | 1 year after delivery |
Payment | T/T, L/C, D/P, Western Union |
OEM & OEM | OK |
Longitudinal Seam Welding Machine | |
Description | Data |
Effective length | 1500 mm |
Clamping | Pneumatic with keyboard and clamping board |
Clamping control | Footswitch/remote control |
Trolley motion speed | 100–500 mm/min |
Wall thickness | 2.0–4.0 mm |
Mandrel cooling | External water cooling |
Cable assembly | Drag chain |
Circumferential Seam Welding Machine (Single Head & Double Heads Welding) | |
Description | Data |
Welding Speed | 0–1000 mm/min |
Welding Current | 5–400 A |
Payload capacity | 200 kg |
Wall thickness | 2.0–4.0 mm |
Rotation speed | 0.05–0.5 rpm |
Diameter coverage | OD300–OD500 mm |
Speed regulation | AC frequency conversion |
Suitable for work-piece length | 1500 mm |
Clamping | Pneumatic cylinder |
Support | Manual operation support |
Capacity (for Double Heads Welding) | 1 or 2 torches typically built-in 2. Up to 4–5 torches available 3. Adjustable for different thicknesses 4. Precision longitudinal track for smooth travel |
B. Producing ProcessÂ

Producing Process

Shot blasting machine

Zinc metalizing machine

C. FAQ:
LPG Cylinder Manufacturing Equipment
Q: What size of LPG cylinder can your machine produce?
A: Our machines can produce 6kg, 12kg, 15kg, and 50kg LPG cylinders for cooking purposes, as well as custom sizes based on customer requirements.
Q: Can you design machines according to LPG cylinder technical drawings?
A: Yes, please send us your technical drawings, and we will customize the machines accordingly.
Q: What are the benefits of choosing your machines?
A: Our machines are robust, reliable, and built for long-term industrial use, ensuring efficient and high-quality production.
To provide you with the best proposal for the right machines, please share the following details:
We need the following information to provide an accurate quotation:
1. Technical drawing of the cylinders you want to make?
2. What size of cylinder do you want to produce? (e.g., 6kg, 12kg)
3. What diameter and thickness of the cylinder do you want to make?
4. Are you new to this industry, or do you already have some machines in your workshop?
5. What is your required production capacity, i.e., how many pieces and sizes do you want to produce per day?
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