As a result, we deliver factory-direct pricing, consistent weld quality, and fast delivery. Similarly, this applies to all your HVAC duct, tank, boiler, and furnace insulation projects.

In addition, we produce these insulation weld pins with a perforated baseplate that allows adhesive to lock the fastener in place. Meanwhile, we also supply CD weld pins with copper-plated or zinc-coated shanks for capacitor discharge welding. Therefore, mechanical contractors and insulation fabricators rely on them for permanently attaching blanket insulation, duct liner, and acoustic panels to metal surfaces.

Technical Specifications of Perforated Base Insulation Weld Pins

To begin with, we manufacture our insulation weld pins in a range of diameters and lengths. Specifically, the table below summarizes the standard product range.

Material & Specification Details for Insulation Weld Pins

• To begin with, we use low-carbon steel (C – 0.23% max, Mn – 0.90% max) as the standard base material for our weld pins.
• Moreover, we apply a copper coating as standard on the pin shank. Copper plating improves electrical conductivity for capacitor discharge welding.
• Additionally, the perforated baseplate is made from galvanized carbon steel sheet, 0.030″ thick and 2″ × 2″ square. The perforations allow adhesive to extrude through and lock the fastener in place.
• Furthermore, our weld pins achieve a minimum tensile strength of 60,000 psi and a minimum yield strength of 50,000 psi, with a minimum elongation of 20% in 2 inches.
• For special orders, we supply stainless steel (302/304/305) and aluminum pins for corrosion-sensitive applications.
• Finally, we offer OEM & ODM — we customize pin diameter, length, base dimensions, plating, and packaging according to your specifications.

How Perforated Base Insulation Weld Pins Work — Adhesive & Weld Fastening

In fact, the perforated base insulation weld pin offers two fastening methods in one product. Furthermore, this flexibility makes it suitable for both weldable and non-weldable substrates.

To begin with, for adhesive mounting, you apply a general-purpose adhesive to the perforated baseplate. Meanwhile, the adhesive extrudes through the perforations and locks the fastener to concrete, masonry, or other rough surfaces. Then, you impale the insulation over the pin and secure it with a self-locking washer.

Moreover, for capacitor discharge (CD) welding, you weld the copper-plated pin directly to sheet metal ducts, ovens, or tanks. Consequently, you can install insulation quickly without drilling or adhesives.

Therefore, the same pin serves both adhesive and weld applications. As a result, contractors reduce inventory and simplify procurement.

Key Advantages of Perforated Base Insulation Weld Pins

• First, the perforated baseplate allows adhesive to lock the fastener in place on concrete, masonry, and other rough surfaces.
• Second, the copper-plated shank enables reliable capacitor discharge welding to sheet metal.
• Third, the self-locking washer (speed clip) presses onto the pin and locks the insulation securely in position.
• Finally, only the pin and washer are needed. No through-holes, no secondary operations, and no special tools for assembly.

Self-Locking Washers — Insulation Retaining Washers for Weld Pins

In addition, the self-locking washer is a critical accessory for completing the insulation fastening operation. Furthermore, we supply these washers as a matched component with our weld pins.

To begin with, you simply press the self-locking washer onto the pin up against the insulation. Meanwhile, the domed, multi-lanced hole design provides positive locking. Then, you clip off or bend over the remaining portion of the pin for a permanent attachment.

Moreover, most washers are manufactured with a beveled edge to prevent the washer from cutting into the insulation facing. Therefore, the insulation remains intact and performs as designed.

Self-Locking Washer Specifications

• First, we offer round and square self-locking washers in various sizes.
• Second, standard diameters include 1″, 1-3/16″, 1-1/2″, and 2″.
• Third, standard thickness is 0.015″ nominal, formed from galvanized steel.
• Finally, we also supply aluminum and stainless steel washers for special applications.

About Our Factory — Direct Manufacturer of Insulation Weld Pins

In fact, Tarco Industry operates a modern manufacturing facility. Specifically, we dedicate it to the production of perforated base insulation weld pins and insulation fasteners.

Furthermore, we complete every step in our own factory. This includes wire drawing, cold heading, baseplate stamping, perforation, plating, and packaging. Consequently, we do not outsource production. We do not act as a middleman.

In addition, we equip our factory with advanced cold heading machines and automated perforation lines. As a result, we produce high-strength insulation weld pins with consistent dimensions and reliable weld performance.

Therefore, whether you need standard pins or custom configurations, 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, eliminating middleman markups.
• Second, we handle In-House Production. We produce pins, bases, and washers all under one roof for full quality control.
• Third, we welcome OEM & ODM. We customize pin dimensions, base sizes, plating, and packaging.
• Fourth, we maintain Bulk Production Capacity. We ensure stable output for large HVAC and industrial insulation orders.
• Finally, we provide Factory Price. We offer competitive direct pricing for distributors, insulation contractors, and OEMs.

Why Choose Our Perforated Base Insulation Weld Pins?

• For example, our pins offer Dual Fastening Flexibility. The perforated base supports adhesive mounting, while the copper-plated shank supports CD welding.
• In addition, they provide Reliable Adhesive Locking. The perforated baseplate allows glue extrusion for a secure bond on concrete and masonry.
• Moreover, they feature Precision CD Weld Performance. Copper plating ensures consistent electrical conductivity for drawn arc stud welding.
• Furthermore, they ensure Secure Insulation Retention. Self-locking washers with beveled edges hold insulation firmly without cutting the facing.
• As a result of their Corrosion Resistance, the galvanized base and plated shank resist rust in humid or outdoor environments.
• Finally, we provide Direct Factory Support. Tarco Industry provides technical guidance, samples, and custom production.

How to Install Perforated Base Insulation Weld Pins

1. First, choose the fastening method. For weldable metal surfaces, use the CD weld method. For concrete or masonry, use the adhesive method.
2. Then, apply adhesive (adhesive method). Spread a general-purpose adhesive on the perforated baseplate, then press it onto the substrate. The adhesive extrudes through the perforations and locks the pin in place.
3. Next, weld the pin (weld method). Use a standard CD stud welder to weld the copper-plated pin directly to the metal surface.
4. After that, impale the insulation. Push the insulation over the pin until it rests against the base or the metal surface.
5. Finally, secure with self-locking washer. Press the self-locking washer onto the pin up against the insulation. Clip off or bend over the remaining pin portion for a permanent attachment.

Applications & Industries for Insulation Weld Pins

• For instance, in HVAC duct systems, contractors use our pins to attach duct liner and external insulation to sheet metal ducts.
• Also, in tank and vessel insulation, they secure thermal insulation to storage tanks and process vessels.
• In addition, for boiler and furnace linings, they hold refractory blanket and ceramic fiber insulation in place.
• Furthermore, in acoustic panel installation, they fasten sound-absorbing insulation to metal walls and ceilings.
• Lastly, in metal building construction, they attach insulation to purlins, girts, and roof decks.

Quality Assurance & Certifications

Furthermore, Tarco Industry manufactures our insulation weld pins under strict quality control. Specifically, they comply with industry standards for ISO 13918 stud welding and ASTM A108 material requirements.

As a result, we perform dimensional inspection, plating thickness verification, and weld testing. Moreover, we test every production batch before shipment.

• Additionally, we offer certifications including ISO 9001, CE, and SGS.
• Similarly, our production capacity reaches 500,000 pcs per month.
• Also, we set the MOQ at 10,000 pcs (negotiable for sample orders).
• In terms of packaging, we offer bulk cartons on pallets with custom marking.
• Finally, we deliver within 15–20 business days after order confirmation.