Cup Head Weld Pins

Warmlock Cup head weld pins go with many different types of insulation, like glass wool, rock wool, ceramic wool, and more. And Cup head weld pins are usually used to attach rigid or semi-rigid boards, or duct liner to metal surface. Cup head weld pins help the insulation layers to be installed in one easy step. Just weld the pins with Capacitor Discharge through insulation layers onto metal sheets.

We also manufacture Cup head weld pins with insulation washer, that’s adhered to the underside of the Cup head, and is usually of kraft paper. The Cup head weld pins with insulation washer are a perfect option for installation of insulation materials with aluminum foil facing or any other metal foil facing, as the insulation washer will prevent arcing on the metal facing foil.

Warmlock Cup head weld pins are involved a lot in HVAC duct lining, air ducts, shipbuilding and maintenance, and various removable or reusable insulation covers and jackets on heating equipments.

Warmlock Cup head CD Weld Pins are mainly of mild steel ( galvanized steel ), also stainless steel.

Warmlock Cup head CD Weld Pins have a cup head in diameter of 30mm (ie, 1-3/16") that is easy for welders to locate during installation. And the cup heads have an upturned bevelled edge that protects the insulation surface from cutting or tearing when the CD weld pins are pushed to pierce through the insulation layers during installation. Also Warmlock has specifically designed the manufacturing technique to ensure the pins to stand firmly and perpendicularly on the head base, unlike quite some of cup head CD weld pins in the industries, whose pin parts come loose easily out of the head bases when being held to shake in cross directions, that lowers efficiency when installation or fabrication, even leads the product fail to work. Warmlock Cup head CD weld Pins perform excellent on this precision point.

Material of cup head CD weld pins -

• Galvanized steel;
• Mild steel;
• Copper plated;
• Nickel plated
• Stainless steel;

Manufacturing of cup head CD weld pins -

Typical specifications of Warmlock cup head CD weld pins -

• Material: mild steel;
• Pin length: 1"(25.4mm), 1-1/8"(28.6mm), 1-3/16"(30mm),  1-3/8"(35mm);
• Pin diameter: 2.7mm (12GA);
• Base diameter: 30mm;
• Base thickness: 0.5mm

Other spec is available upon request.

Application of cup head weld pins -