---
title: Improved Seam Welding with the QuickStitch 2.0 Rotary Stitch Welder
description: Let's take a look at the key features and benefits of the machine and how it can maximize productivity in your seam welding operations.
image: https://blog.mestekmachinery.com/hubfs/4-3-Lockformer-QuickStich-20-Rotary-Stitch-Welder-8-min-scaled.jpg
---
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# Improved Seam Welding with the QuickStitch 2.0 Rotary Stitch Welder
Aug 8, 2026 | by Mestek Machinery
The QuickStitch 2.0 Rotary Stitch Welder from Lockformer was designed to meet the needs of today’s duct fitting fabrication. Let's take a look at the key features and benefits of the machine and how it can maximize productivity in your seam welding operations.
## Key Features of the Lockformer QuickStitch 2.0 Rotary Stitch Welder
The QuickStitch 2.0 optimizes your welding production output by giving the operator a controlled and consistent longitudinal weld from end to end with a minimal overlap. With a new operator-friendly touch-screen control panel wth a memory feature for ease of production, the operator can choose from a continuous or stitch weld that provides an excellent solution for welding of both galvanized and stainless steel straight tubes and round fittings.
A manual welding pressure system is also included for welds and changeovers. The system also features digital temperature switches for chiller temperature and water flow adjustments. The QuickStitch 2.0 produces air-tight weld seams with an adjustable weld speed from 3 ft/min to 49 ft/min for maximum productivity and efficiency.
## QuickStitch 2.0 Specifications by Model
The QuickStitch 2.0 is available in three (3) models to meet your operational needs allowing you to create longitudinal seams of 2” - 40”, 2” - 50”, or 2” - 60” respectively.
| ****Model**** | ****40"**** | ****50"**** | ****60"**** |
| --- | --- | --- | --- |
| ****Galvanized Steel Material Thickness Range**** | 30ga to 18ga (0.012" to 0.048") | 30ga to 18ga (0.012" to 0.048") | 30ga to 18ga (0.012" to 0.048") |
| ****Stainless Steel Material Thickness Range**** | 30ga to 18ga (0.012" to 0.048") | 30ga to 18ga (0.012" to 0.048") | 30ga to 18ga (0.012" to 0.048") |
| ****Diameter Range**** | 3" to 40" | 3" to 40" | 3" to 40" |
| ****Longitudinal Seam Length**** | 2" to 40" | 2" to 50" | 2" to 60" |
| ****Standard Overlapping** **(Special on Request)**** | 0.236" (1/4" nominal) | 0.316" (5/16" nominal) | 0.316" (5/16" nominal) |
| ****Power, Stitchwelder**** | 460VAC, 3PH, 60Hz, 125A | 460VAC, 3PH, 60Hz, 125A | 460VAC, 3PH, 60Hz, 125A |
| ****Power, Chiller**** | 120VAC, 1PH, 60Hz, 10A | 120VAC, 1PH, 60Hz, 10A | 120VAC, 1PH, 60Hz, 10A |
| ****Copper Wire**** | 0.078" round (optional 0.070" round) | 0.078" round (optional 0.070" round) | 0.078" round (optional 0.070" round) |
| ****Weld Speed**** | 3 ft/min to 49 ft/min | 3 ft/min to 49 ft/min | 3 ft/min to 49 ft/min |
| ****Dimensions / Weight**** | Length: 115" Width: 45" Height: 69" Machine Weight: 1,323 lbs. Copper Wire Coil Weight: 44 lbs. | Length: 115" Width: 45" Height: 69" Machine Weight: 1,356 lbs. Copper Wire Coil Weight: 44 lbs. | Length: 115" Width: 45" Height: 69" Machine Weight: 1,389 lbs. Copper Wire Coil Weight: 44 lbs. |
## QuickStitch 2.0 Rotary Stitch Welder Demo
## Benefits of Longitudinal Seams in HVAC Fabrication
Most HVAC duct leakage occurs at the notch hole that is produced at the top and bottom of a duct section at the transverse duct connection to the fan or the unit. A full-engagement longitudinal seam which allows you to deliver a finished duct with substantially reduced chances of leakage in the corners of the duct’s transverse joint. Not only does the reduced chances for leakage create a more desirable duct, but it also reduces the amount of post-production sealing that’s necessary. In most cases, a full-engagement longitudinal seam substantially reduces the chances of leakage in the corners of the duct’s transverse joint by up to 25%.
Want to learn more about the QuickStitch 2.0 and other solutions from Lockformer that can boost productivity and profitability in your shop? Register today for a 1-on-1 consultation with one of our technical experts today!
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