Köco


Al Naesar Trading is the sole distributor and exclusive service provider of KÖCO brand welding equipment, accessories and consumables from Köster & Co., Germany in the UAE.

Our large inventory of stud welding machines, shear studs (shear connectors) and threaded studs in Dubai, UAE has made Al Naesar Trading the preferred supplier of stud welding tools and services across the GCC region. Dedicated sales personnel, seasoned technicians and efficient support services ensure smooth commissioning and uninterrupted operations for our clients with unmatched welding precision and consistency thanks to the rigorous testing all equipment receive to meet the highest quality assurance standards.

Stud Welding Machines

ELOTOP 510

Stud welding range: 3–8 mm w/ ceramic ferrule
Max. current: 450 A
Max. time: 460 ms

ELOTOP 810

Stud welding range: 3–12 mm  w/ ceramic ferrule 
Max. current: 800 A

Max. time: 600 ms

ELOTOP 1010

Stud welding range: 3–14 mm  w/ ceramic ferrule

Max. current: 1100 A

Max. time: 1000 ms

ELOTOP 1710

Stud welding range: 3–20 mm  w/ ceramic ferrule
Max. current: 1800 A
Max. time: 1500 ms

ELOTOP 2010

Stud welding range: 3–22 mm w/ ceramic ferrule
Max. current: 2300 A
Max. time: 1500 ms

ELOTOP 3010

Stud welding range: 6–25 mm  w/ ceramic ferrule
Max. current: 3500 A
Max. time: 2000 ms

KST 110

Weldable stud range: 3-10 mm
Stud welding equipment with capacitor discharge

Suitable for welding steel, stainless steel, aluminium and brass

Inverter 1305i

Stud welding range: 3–16 mm
Max. current: 1300 A
Max. time: 1000 ms

Inverter 1805i

Stud welding range: 2–19 mm
Max. current: 1600 A
Max. time : 1000 ms

Inverter 2305i

Stud welding range: 2–25 mm
Max. current: 2300 A
Max. time: 1500 ms


All KÖCO welding studs and shear connectors are made from materials that possess phenomenal yield strength capable of withstanding the heaviest tensile and shear loads.

Standard product design and dimensions conform to DIN EN ISO 13918.

Stud Range

Shear Stud
(SD)

Available in Grade S235J2+C470 or ASTM A108 

Full Threaded Stud
(FD)

Available in MS 4.8, SS 1.4301, SS 4571 and K800 grades

Partial Threaded Stud
(PD)

Available in MS 4.8, SS 1.4301, SS 4571 and K800 grades

Reduced Shaft Threaded Stud
(RD)

Available in MS 4.8, SS 1.4301, SS 4571 and K800 grades

MIG Internal Threaded Stud

Available in MS 4.8, SS 1.4301, SS 4571 and K800 grades

Insulation Pins


Our Drawn Arc and CD pins are available in these materials:

  • Stainless Steel
  • Aluminium
  • Brass
  • Copper-coated mild steel