In addition, we engineer this CD Weld Insulation Pin (also known as cupped head pins, insulation weld pins, or duct liner weld pins) as a precision capacitor discharge fastener. It permanently attaches blanket insulation, duct liner, and acoustic panels to sheet metal surfaces in one step. Therefore, the industry relies on it for HVAC duct insulation, industrial ovens, boilers, tanks, and marine bulkhead applications.

Technical Specifications of Cup Head Weld Insulation Pin

Material & Plating Options for Insulation Weld Pins

• To begin with, we use low carbon steel (C-0.23% max, Mn-0.90% max) as the standard material for both pin and washer.
• Moreover, we offer plating options including galvanized (standard) or copper plated (available on request).
• Additionally, we bevel the washer edge to prevent cutting of insulation material.
• For special orders, we supply stainless steel (18-8), aluminum, and bimetallic options.
• Finally, we offer kraft paper insulating washers for welding through foil-faced insulation — we can factory-install them or you can order them separately.

About Our Factory — Direct Manufacturer of CD Weld Pins

In fact, Tarco Industry operates a modern manufacturing facility and we dedicate it to the production of insulation weld pins, CD weld pins, and HVAC duct insulation fasteners. Furthermore, we complete every step — from raw material to finished packaging — in our own factory. Consequently, we do not outsource production, and we do not act as a middleman.

In addition, we equip our factory with advanced cold heading machines, automated pin production lines, and strict quality inspection systems. As a result, we produce Cup Head Weld Insulation Pin with consistent dimensions, reliable weld tips, and stable performance for B2B customers worldwide. Therefore, whether you need standard pins or custom specifications, Tarco Industry can produce them directly for you.

Factory Direct Advantages

• First, we are a Manufacturer, Not a Trader — you buy directly from Tarco Industry production lines, and we eliminate middleman markups.
• Second, we handle In-House Production — we produce pins, washers, and packaging all under one roof for full quality control.
• Third, we welcome OEM & ODM — we customize pin length, diameter, washer size, material, and packaging according to your drawings or samples.
• Fourth, we maintain Bulk Production Capacity — we ensure stable output for large orders with short lead times.
• Finally, we provide Factory Price — we offer competitive direct pricing for distributors, contractors, and insulation system manufacturers.

Why Choose Our Cup Head Weld Insulation Pin?

• For example, our pins offer One-Step Installation — you push the cup head pin through insulation and weld it directly to the metal substrate in a single operation. You need no drilling and no adhesives.
• In addition, they support Capacitor Discharge (CD) Welding — they work perfectly with standard CD stud welders and resistance welding equipment, including portable on-site units for HVAC ductwork.
• Moreover, they feature Precision Sharp Points — we manufacture them from special carbon alloy steel with cold-formed hardened tips for positive contact and reliable welds on 16–24 gauge sheet metal.
• Furthermore, they handle Foil-Faced Insulation — the paper insulating washer option prevents arcing and damage when you weld through aluminum foil-faced insulation.
• As a result of their Labor-Saving Design, they reduce installation time by up to 60% compared to traditional mechanical fastening methods in thermal and acoustical insulation projects.
• Finally, we provide Direct Factory Support — Tarco Industry provides technical guidance, samples, and custom production for your specific insulation fastening needs.

How to Install Cup Head Weld Pins

1. First, prepare the surface — clean the metal surface to ensure proper electrical contact for CD welding.
2. Then, position insulation — place the insulation material onto the metal surface (duct, oven wall, boiler, etc.).
3. Next, push pin through insulation — insert the cup head pin through the insulation until it contacts the base metal. Note: you need an insulating paper washer when you weld through foil-faced insulation.
4. Finally, weld in place — activate the CD stud welder to weld the pin to the metal substrate, and you complete the installation in one step.

Applications & Industries for Cup Head Weld Pins

• For instance, in HVAC ductwork, contractors use our pins to fasten duct liner and external insulation for heating, ventilation, and air conditioning systems.
• Also, in industrial equipment, they secure insulation for ovens, boilers, tanks, and hot/cold process equipment.
• In addition, for marine and shipbuilding, shipyards use them for bulkhead and hull insulation fastening in offshore platforms.
• Lastly, in commercial construction, builders use them for acoustic panels, thermal barriers, and architectural insulation systems.

Quality Assurance & Certifications

Furthermore, Tarco Industry manufactures our Cup Head Weld Insulation Pin under strict quality control systems, and they comply with relevant industry standards such as ISO 13918, AWS D1.1, and GB/T 10433. As a result, we inspect every production batch for dimensions and weld tip quality before shipment from our factory.

• Additionally, we offer certifications including ISO 9001, CE, and SGS.
• Moreover, our production capacity reaches 10,000 pcs/hour.
• Also, we set the MOQ at 5,000 pcs (negotiable for sample orders).
• In terms of packaging, we offer 1,000–3,000 pcs per carton / 48 cartons per pallet / custom packaging available.
• Finally, we deliver within 15–20 business days after order confirmation.
• Most importantly, Tarco Industry is the manufacturer — we handle direct factory production.