Preda Machine seam locker is used for closing Pittsburgh seams on straight or curved ducts.
You can use this machine to seam the Pittsburgh locks quickly and easily!
Thickness capable for the sheet is 0.5mm-1.2mm with adjustment to the sheet thickness automatic.
Suitable for flange heights of 9 mm – 13 mm and for sheet thicknesses of 0.5 mm – 1.25 mm.
This machine is in 8KG, which is easy to carry and suitable for on-site ductworks.

Preda Lock seamer Parameters:
Model | Max thickness (mm) | Power (kW) | Weight (kg) | Dimension L*W*H (mm) |
LS-12 | 1.2 | 0.75 | 8 | 400*150*200 |













V. FAQ
Abovr all, whether Preda Machine is a manufacturer or just exporter? What machines do Preda Machine manufacture?
Anhui Preda Machinery Manufacturing Co.,Ltd is 100% manufacturer of HVAC duct forming machines.
Our products cover all ranges of rectangular HVAC duct former and spiral tube formers mainly as following,
Duct Line 5 U type
Duct Line 5
Duct Line 4
Duct Line 3
Duct Line 2
Cut to length line
Mould type spiral Tubeformer
Spiral duct machine
Plasma cutting machine
Elbow gorelocker
TDF Rollformer/TDF Flange former
Lock fomer/Pittsburgh machine
Seam locker (Hand-held version)
Grooving machine
Groove&sheare
Electrical shearer
CNC hydraulic guillotine
Angle iron bender/roller
Pneumatic/Manual folder (Normal/TDF versions)
Angle iron flange former
Hydraulic notching machine
1. How to get a accurate quotation from Preda Machine?
Provide the machine name you want, the specifications you need and the quantity of machine, we shall quote accordingly!
2. What’s the shipping cost from China to your country?
Please kindly tell us your nearest port to your place. We have reliable shipping forwarder to insure cheap, safe, convenient and timely delivery via sea.
3. Payment terms, MOQ, warranty, FOB.
Payment terms: 20% TT paid in advance, the balance of 80% before the shipment.
Minimum order quantity: 1 set of any machine of Preda Machine.
Delivery time : 5days after order confirmation. As a real manufacturer, we normally stock our machine in at least 1-3 sets including duct line 5, duct line 3,duct line 2! And at least 5sets each for TDF flange forming machine, Pittsburgh lock former, TDF folding machine, Pneumatic folder and etc…
Shipping terms : FOB, CFR, CIF and etc.. according to your requirements.
Warranty:24 months after our machines arriving at you.
4. What’s the package?
Fumigation-free plywood case for LCL and nude package for full container basis such as duct line 5, duct line 3, duct line 2...
5. What about commissioning service?
We can offer commissioning service, the buyer need to pay for all the transport, salary, hotel, meals for Preda Machine technicians caused during the service period.
6. What’s policy for guarantee and broken parts?
Warranty period of equipment is two years, during which the broken parts and spares caused by quality can be offered free. After guarantee period, all broken parts or easy wearing parts will be charged in a most competitive price ever in the market!