Changzhou Longhai Welding Equipment Co.,lt mainly produce CD and drawn arc stud welder ,stud gun ,welding stud ,ceramic ferrule ,insulation pin ,washer ,shear connector ,brazing pin , pin brazing machine ,cable lug , milling cutter ,etc CD stud welder minaly including CD-1000II and CD-1500II to welding dia 3-6mm and 3-8mm CD welding stud .Arc stud welder mainly including ARC-800,ARC-1450,ARC-2000,ARC-2650 ,ARC-6000-10 ARC-6000-201 similar as USA nelson stud welder ,stud gun .Inverter type arc stud welder ARC-800II,ARC-1600II,ARC-2000II,ARC-2500II welding dia 3-25mm differently .Pin brazing machine ,brazing pin for cathodic protection ,etc Ceramic Ferrule size 4mm 6mm 8mm 10mm 12mm 13mm 16mm 19mm 22mm 25mm ,etc Shear connector size from 13mm to 25mm , length from 50m m to 300mm