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Automatic Circumferential Seam Welding Machine

Welding · LPG cylinder production line

Welding
Automatic Circumferential Seam Welding Machine
Special equipment for LPG cylinder girth welding, consisting of an automatic welding machine and its frame. Cylinder rotation (welding speed) is driven by a cycloidal reducer or a speed-regulating motor; the welding-nozzle position is adjustable, and pneumatic clamping allows fast loading and unloading, delivering stable welding quality and high production efficiency.
  • Welding speed0.3–1.2 m/min
  • First-pass yield≥ 99.5%
  • Twin torchsynchronized
  • Lead time60–90 days
  • Warranty12 months
Key Features

What we got right in the design

Symmetric twin-torch welding

Both sides of the circumferential seam arc at the same time, balancing heat input so ovality change stays small and no re-rounding pass is needed.

Arc sensing seam tracking

The torch follows the joint in real time, so fit-up variation in incoming parts does not turn into weld deviation.

Recipe-based parameters

Each cylinder type and plate thickness has a stored program; a size change is a recipe call, not a manual setup.

Specification

Technical data

Standard machine data below. Non-standard sizes can be tooled to your cylinder drawings.

Air pressure0.6 MPa
Welding speed0.2–1.36 m/min (stepless)
Open-circuit voltage70 V
Welding voltage24–40 V
Welding current100–500 A
Rated input current70 A
Input power38 KVA
Duty cycle500 A/60%, 400 A/100%
Welding voltage stability±1.5 V
Welding current stability±15 V
Control circuit voltage36 V
Power supplyAC 380 V / 50 Hz, 3-phase + N + PE (customized to destination)
ProtectionControl cabinet IP54, actuators IP65
Lead time60 – 90 days after contract effectiveness
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Tell us your cylinder and target output

The more specific your information, the more accurate the quote. Ideally include: cylinder size (1 / 5 / 12.5 / 15 / 25 / 50 kg), sheet thickness, target daily output, existing process and available floor area.

  • ResponseWithin 4 working hours
  • ProposalPreliminary layout in 48 h
  • ConfidentialityNDA available