Full-Strength Stud Welds in Under a Second. Up to 18 Studs a Minute.
The CRUXWELD CDS-2500 is a drawn arc stud welding machine for shear connectors, threaded studs, insulation pins and anchors from 6 to 25 mm diameter on mild steel, stainless steel and aluminium. A microprocessor-controlled, full-bridge rectifier power source delivers 100–2500 A, continuously adjustable, with weld time set from 0.01 to 9.99 s — and it tolerates ±20% supply fluctuation, so it welds on the bridge deck as well as in the shop. Made in India by a GeM Registered OEM Manufacturer.
The Drawn Arc Stud Welding Machine for Structural Work
Drawn arc stud welding fastens a stud to plate in a fraction of a second with a full-penetration weld stronger than the stud itself — no drilling, no tapping, no leak path at the joint. The CDS-2500 is the production-size drawn arc stud welding machine: a 120 kVA three-phase power source rated at 2500 A, a drawn arc gun with ceramic-ferrule foot and chuck, and a control that sets weld time and current steplessly so every stud gets the same energy.
It is built for site: IP23 enclosure, class H insulation, automatic compensation for supply voltage fluctuation, self-test at switch-on, anti-repeat protection so a stud cannot be fired twice onto the same spot, and a trolley with large wheels and a telescopic handle so one person moves it along the deck.
100–2500 A, stepless
Continuously adjustable current and 15–2000 ms timing for fine tuning on every stud size.
Enhanced duty cycle
Increased duty for production environments and 24-hour working; up to 30% energy saving over conventional sources.
Through-deck function
Special mode for welding shear studs through galvanised metal deck onto the beam flange.
Gun test & auto shutdown
Check the gun lift and plunge before welding; auto safety shutdown and anti-faulty-operation logic.
CDS-2500: 120 kVA, 2500 A, trolley-mounted with telescopic handle.
The system
Power Source, Gun, Control
1Power source
Full-bridge controlled rectifier, microprocessor control, 100–2500 A continuously adjustable. Forced-air cooled, IP23, class H, 130 kg on braked wheels.
2Drawn arc stud gun
Lift-and-plunge gun with adjustable legs, chuck and ferrule grip for M6–M25 studs; the gun lifts the stud, strikes the arc and plunges it into the pool on the set timing.
3Digital control
Weld current, strike current, weld time and forging time set on one panel with digital display; job memory, torch test and contact indicator.
Supplied with the gun cable, an extended gun cable, two earth clamps with leads, four sets of chucks and ceramic ring claws and a spanner — a complete drawn arc stud welding machine set, ready to weld on the day it arrives.
How it works
Lift, Arc, Plunge: One Second per Stud
1Load and position
Stud in the chuck of the drawn arc stud welding machine gun, ceramic ferrule in the foot. Press the gun square onto the plate; the legs set the plunge depth.
2Lift and arc
On the trigger the gun lifts the stud a few millimetres and strikes a pilot arc; the main current — up to 2500 A — melts the stud end and the plate for the set time.
3Plunge
The gun plunges the stud into the molten pool; the ferrule shapes the collar and the weld solidifies in a fraction of a second.
4Break the ferrule, next stud
Knock the ferrule off: a full-penetration weld with a uniform 360° collar. At 3–18 studs a minute the deck fills fast.
Stud welding needs no hole, no certified welder and no second operation: the full cross-section of the stud is welded, so engineers design around the strength of the stud or the plate — not the joint.
Various jobsites
Where the CDS-2500 Works
Infrastructure
Highway bridge girders: shear connectors welded on site
Composite decks
I-beam flanges
Fabrication yard
Bridge sections
Shop work: threaded studs on plates
Headed studs on beam flanges
The weld: one second under the ferrule
From highway bridges to boiler linings, the CDS-2500 is the drawn arc stud welding machine Indian contractors and fabricators put on the job:
Seconds per stud against minutes for a drilled-and-tapped or arc-welded fastening.
No-hole fastening
Complete joint penetration across the full stud cross-section — and no leak path at the connection.
Repeatable
Microprocessor-timed current and lift give the same weld every time, stud after stud.
Stronger than the stud
The weld is stronger than the stud or the base metal; design around the member, not the joint.
No certified welder needed
The process is easy to train on; a deck crew is productive in a day.
Fast payback
Labour savings, no consumable electrodes and no secondary operations pay back the machine quickly.
For small studs on thin sheet where the back must stay clean, see our capacitor discharge stud welders (CDS10M up to M10, CDS12M up to M12).
Key features
Built for Production, Point by Point
2500 A transformer rating
The drawn arc stud welding machine welds studs to 25 mm as standard and welds a 32 mm weld base with the right gun and chuck.
Stepless time and current
15–2000 ms timing and 100–2500 A, infinitely adjustable for fine tuning.
Voltage compensation
Automatic compensation for grid fluctuation; ±20% supply variation allowed.
Self-test at switch-on
The controller checks itself for safety and quality before the first weld.
Anti-repeat logic
Anti-faulty-operation design prevents a second weld onto the same point.
Gun test function
Check the gun lift and plunge action before welding.
Compact and portable
780 × 355 × 870 mm, 130 kg, on braked wheels with a telescopic handle.
IP23, class H, air cooled
Shop-floor protection rating and class H insulation; forced-air cooling for continuous work.
Stud range
What It Welds
Drawn arc gun with chuck, legs and ferrule foot.
The CDS-2500 welds drawn arc studs from 6 to 25 mm diameter and up to 400 mm long in mild steel, stainless steel and aluminium — one machine for every stud type used in structural and plant work:
A drawn arc stud welding machine of this size gives full-strength welds on plate from about 3 mm; as a rule the plate should be at least one-third of the stud diameter. Send us your stud size and plate thickness and we will confirm the settings.
Scope of supply
What Arrives with the CDS-2500
✓CDS-2500 drawn arc stud welding power source on trolley
✓Drawn arc stud gun with cable, plus one extended gun cable
✓Two earth clamps with earth leads
✓Four sets of chucks and ceramic ring claws for the stud sizes on your order
✓Crescent spanner, operation manual and test certificate
Connect a 380/415 V three-phase feeder rated for 120 kVA (162 A) and the drawn arc stud welding machine is ready to weld. Additional chucks, ferrule grips, longer cables, through-deck accessories and ferrules are quoted separately; the exact scope is confirmed on the quotation. See the full range on our products page.
Gun with cable, chuck and ferrule foot.
Why buy from CRUXWELD
Made in India, Supported Worldwide
45+ years of welding expertise
This drawn arc stud welding machine is designed, built and load tested by CRUXWELD engineers in India; our technical team answers on WhatsApp.
ISO 9001:2015
Every drawn arc stud welding machine power source is tested at rated current and every gun checked on a test plate before dispatch.
GeM Registered OEM Manufacturer
Tender-ready documentation for government, PSU, railway and infrastructure buyers.
Pan-India supply, export ready
Dispatch across India and export packing for overseas orders; guns, chucks, ferrules and spares in stock.
Specifications are subject to improvement without notice; the quotation and test certificate supplied with the machine are the governing documents. Warranty terms are stated on the quotation / invoice.
What stud sizes can the CDS-2500 drawn arc stud welding machine weld?
Drawn arc studs from 6 mm to 25 mm diameter — headed shear studs, threaded studs, insulation pins and refractory anchors — up to 400 mm long, in mild steel, stainless steel and aluminium. With the right gun and chuck it welds a 32 mm weld base.
What power supply does it need?
A three-phase 380/415 V supply, 50 or 60 Hz. Rated input is 120 kVA and 162 A, so provide a dedicated feeder with a suitably rated breaker or a generator of adequate size. The machine tolerates ±20% voltage fluctuation and compensates automatically, which matters on construction sites.
How fast does it weld?
On a drawn arc stud welding machine each weld takes 0.01 to 9.99 seconds depending on stud size; in practice an operator welds 3 to 18 studs per minute including loading the stud and ferrule.
Can it weld shear connectors through metal deck?
Yes. The CDS-2500 has a through-deck function for welding headed shear studs through galvanised profiled deck onto the beam flange, the method used on composite floors and bridges.
What is the difference between drawn arc and CD stud welding?
Drawn arc (this machine) uses a timed arc of up to 2500 A and a ceramic ferrule to weld large studs onto thicker plate. Capacitor discharge welding releases stored energy in milliseconds to weld small studs onto thin sheet without marking the back. CRUXWELD makes both — see the CD stud welder page.
Is the drawn arc stud welding machine suitable for site work?
It is built for it: IP23 enclosure, class H insulation, self-test at switch-on, anti-repeat protection, large braked wheels and a telescopic handle so one person moves it along a deck or girder.
What is supplied with the machine?
Power source on trolley, drawn arc stud gun with cable and an extended gun cable, two earth clamps with leads, four sets of chucks and ceramic ring claws, spanner, user manual and test certificate. The exact scope is confirmed on the quotation.
How do I get the CDS-2500 price and delivery time?
Request a quote on this page or message +91 88008 82983 on WhatsApp with your stud sizes, plate thickness and daily stud count. You will receive a GST quotation with delivery time, usually the same working day.
Stud size, plate thickness, studs per day — send us three numbers and we will confirm the set-up and price.
This comment shows appreciation for the post, acknowledges something new the commenter learned, and expresses intent to try the suggested activity. It’s concise, and friendly, and encourages the blogger to keep sharing valuable content.
I need to weld 16mm shear studs on 1.5mm deck sheet and my base metal thickness is 1.5mm, and I am using Inverter Arc STUD welder of specification STUD 2500, what should be the exact setting that i should input on the machine 0A to 2500A
Dear Sir,
Greetings!!,
We require a stud welding machine and would like to request your best offer.
1. STUD WELDING MACHINE STUD CD 2500 VIRGO PLUS
Please also confirm payment terms and validity of the quotation.
We look forward to your competitive offer.
For Pentagon Machines and Tools
Surendra Kumar
Pentagon Machines and Tools
*Pune/GREATER NOIDA/Faridabad*
Mobile: *+91 7972028138, 9022861033, 9373601875, 9890009604*
Web: http://www.pentagonmachines.com
Email: pentagon@pentagonmachines.com
Please quote the price for upto 25mm stud welding.
We will do the needful.
Please confirm the price. Can we use this Stud welder for 22mm diameter studs?
Yes, it is available for 22mm diameter studs. Please provide your email ID and contact details for a formal quote.
Thank you for your response. My procurement team will contact you soon.
I need to weld 10mm shear studs but my base metal thickness is 12mm, can I weld with CD Stud Welder?
Dear Gorang Patel, your job can be done with a drawn arc stud welder but not possible with a capacitor discharge stud welder.
Can I use this equipment on a generator?
Dear Rohan Singh,
Greetings!
Yes, you can also operate it on a generator.
This comment shows appreciation for the post, acknowledges something new the commenter learned, and expresses intent to try the suggested activity. It’s concise, and friendly, and encourages the blogger to keep sharing valuable content.
Require stud welding machine,suitable to weld 16mm diameter stud.
I need to weld 16mm shear studs on 1.5mm deck sheet and my base metal thickness is 1.5mm, and I am using Inverter Arc STUD welder of specification STUD 2500, what should be the exact setting that i should input on the machine 0A to 2500A
what is the different between drawn arc stud welder and a capacitor discharge stud welder.
Please send a quote for CDS-2500 with complete set
the delivery time to Kuwait with the price plz
I am also interested in a quote
Dear Sir,
Greetings!!,
We require a stud welding machine and would like to request your best offer.
1. STUD WELDING MACHINE STUD CD 2500 VIRGO PLUS
Please also confirm payment terms and validity of the quotation.
We look forward to your competitive offer.
For Pentagon Machines and Tools
Surendra Kumar
Pentagon Machines and Tools
*Pune/GREATER NOIDA/Faridabad*
Mobile: *+91 7972028138, 9022861033, 9373601875, 9890009604*
Web: http://www.pentagonmachines.com
Email: pentagon@pentagonmachines.com