The Stainless Quick Card Insulation Nail for Furnace represents a breakthrough in high-temperature fastening technology, specifically engineered to overcome the limitations of traditional insulation anchors in industrial furnace environments. Unlike conventional welded or drilled anchors that require specialized labor and extended installation time, these nails integrate a precision-machined stainless steel core (available in 304 and 316 grades) with an innovative quick-card mechanism that enables tool-free installation. This design reduces on-site labor costs by 40% and cuts project timelines by half compared to traditional methods.
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Crafted to thrive in extreme conditions, the nails feature a serrated shank with 0.5mm deep teeth that create mechanical interlock with refractory materials, delivering superior pull-out resistance of 1.2kN per nail—a 30% improvement over smooth-shank alternatives. The expanded flange (15mm-25mm diameter) distributes pressure evenly across insulation surfaces, preventing localized damage during thermal expansion. These attributes make them indispensable for critical applications in petrochemical reactors, power plant boilers, and steel mill furnaces where operating temperatures reach 1200°C and corrosion from gases, moisture, or chemicals is a constant threat.
Parameter | Value |
Material | 304/316 Stainless Steel (ASTM A276 compliant) |
Temperature Range | -50°C to 1200°C (continuous operation) |
Nail Diameter | 3mm (light-duty), 4mm (standard), 6mm (heavy-duty) |
Flange Diameter | 15mm (3mm nail), 20mm (4mm nail), 25mm (6mm nail) |
Length Options | 50mm-200mm (custom lengths available) |
Installation | Push-fit into pre-drilled holes (6mm-8mm diameter) or adhesive bonding |
Surface Treatment | Passivated (304), pickled & passivated (316) |
Certifications | EN 10216-5, ASME BPVC Section VIII, ISO 9001:2015 |
Tool-Free Installation: The spring-loaded quick-card mechanism features a retractable locking pin that engages with pre-drilled holes upon insertion, eliminating the need for welding, drilling, or specialized tools. In large-scale projects requiring 1000+ nails, this reduces installation time from 2 days to 1 day compared to welded anchors.
Extreme Temperature Performance: 316 stainless steel retains 90% of its tensile strength at 1000°C due to its molybdenum content (2-3%), ensuring structural integrity in ethylene cracking furnaces where peak temperatures reach 1100°C and thermal cycling occurs 50+ times daily.
Corrosion Resistance: The duplex steel variant (S31803) combines 22% chromium, 5% nickel, and 3% molybdenum to resist chloride stress corrosion cracking and sulfuric acid attacks, extending service life by 2-3 years in hydrotreating units where H₂S concentrations exceed 500ppm.
Load Distribution: The expanded flange (25mm diameter on 6mm nails) spreads thermal expansion forces over a 490mm² area, reducing refractory spalling by 40% in cyclone preheaters where temperature gradients exceed 500°C per hour during start-up and shutdown cycles.
Petrochemical Reactors: Secure ceramic fiber modules in Fluid Catalytic Cracking (FCC) units operating at 800°C and 5MPa pressure, withstanding hydrogen sulfide (H₂S) corrosion that degrades carbon steel anchors within 12 months.
Power Plant Boilers: Anchor refractory linings in superheater and reheater sections, handling flue gases up to 1200°C with sulfur dioxide (SO₂) concentrations exceeding 1000ppm—common in coal-fired plants.
Steel Reheating Furnaces: Stabilize insulation layers in walking beam furnaces, maintaining integrity during 1200°C radiant heat exposure and supporting 50-ton/day billet throughput without loosening.
Waste Incinerators: Fasten refractory linings in combustion chambers processing municipal solid waste, resisting hydrochloric acid (HCl) corrosion from plastic combustion and 1000°C heat during 24/7 operation.
Q: What is the maximum load capacity of these nails?
A: The 316 stainless steel variant supports 1.2kN per nail in tension for standard 4mm diameter nails, while the 6mm heavy-duty duplex steel (S31803) handles 1.8kN—sufficient to secure 50mm-thick ceramic fiber modules in high-pressure reactors.
Q: Can they be used in cryogenic environments?
A: Yes, 304 stainless steel retains 80% of its toughness at -50°C due to its low carbon content (<0.08%), making it suitable for liquid nitrogen storage tank insulation where temperatures drop to -196°C during maintenance.
Q: How do I prevent oxidation during installation?
A: For applications exceeding 1000°C, apply a ceramic coating (Al₂O₃-based) with 0.1mm thickness to the nail surface before embedding. This coating forms a protective barrier that enhances oxidation resistance at 1200°C by 50% compared to uncoated nails.
Q: Are custom sizes available?
A: Yes, we offer custom lengths (50-200mm) and material grades, including Hastelloy C-276 for extreme corrosion environments (e.g., chloride-rich offshore furnaces) and Inconel 600 for ultra-high temperatures up to 1250°C.
Crafted to thrive in extreme conditions, the nails feature a serrated shank with 0.5mm deep teeth that create mechanical interlock with refractory materials, delivering superior pull-out resistance of 1.2kN per nail—a 30% improvement over smooth-shank alternatives. The expanded flange (15mm-25mm diameter) distributes pressure evenly across insulation surfaces, preventing localized damage during thermal expansion. These attributes make them indispensable for critical applications in petrochemical reactors, power plant boilers, and steel mill furnaces where operating temperatures reach 1200°C and corrosion from gases, moisture, or chemicals is a constant threat.
Parameter | Value |
Material | 304/316 Stainless Steel (ASTM A276 compliant) |
Temperature Range | -50°C to 1200°C (continuous operation) |
Nail Diameter | 3mm (light-duty), 4mm (standard), 6mm (heavy-duty) |
Flange Diameter | 15mm (3mm nail), 20mm (4mm nail), 25mm (6mm nail) |
Length Options | 50mm-200mm (custom lengths available) |
Installation | Push-fit into pre-drilled holes (6mm-8mm diameter) or adhesive bonding |
Surface Treatment | Passivated (304), pickled & passivated (316) |
Certifications | EN 10216-5, ASME BPVC Section VIII, ISO 9001:2015 |
Tool-Free Installation: The spring-loaded quick-card mechanism features a retractable locking pin that engages with pre-drilled holes upon insertion, eliminating the need for welding, drilling, or specialized tools. In large-scale projects requiring 1000+ nails, this reduces installation time from 2 days to 1 day compared to welded anchors.
Extreme Temperature Performance: 316 stainless steel retains 90% of its tensile strength at 1000°C due to its molybdenum content (2-3%), ensuring structural integrity in ethylene cracking furnaces where peak temperatures reach 1100°C and thermal cycling occurs 50+ times daily.
Corrosion Resistance: The duplex steel variant (S31803) combines 22% chromium, 5% nickel, and 3% molybdenum to resist chloride stress corrosion cracking and sulfuric acid attacks, extending service life by 2-3 years in hydrotreating units where H₂S concentrations exceed 500ppm.
Load Distribution: The expanded flange (25mm diameter on 6mm nails) spreads thermal expansion forces over a 490mm² area, reducing refractory spalling by 40% in cyclone preheaters where temperature gradients exceed 500°C per hour during start-up and shutdown cycles.
Petrochemical Reactors: Secure ceramic fiber modules in Fluid Catalytic Cracking (FCC) units operating at 800°C and 5MPa pressure, withstanding hydrogen sulfide (H₂S) corrosion that degrades carbon steel anchors within 12 months.
Power Plant Boilers: Anchor refractory linings in superheater and reheater sections, handling flue gases up to 1200°C with sulfur dioxide (SO₂) concentrations exceeding 1000ppm—common in coal-fired plants.
Steel Reheating Furnaces: Stabilize insulation layers in walking beam furnaces, maintaining integrity during 1200°C radiant heat exposure and supporting 50-ton/day billet throughput without loosening.
Waste Incinerators: Fasten refractory linings in combustion chambers processing municipal solid waste, resisting hydrochloric acid (HCl) corrosion from plastic combustion and 1000°C heat during 24/7 operation.
Q: What is the maximum load capacity of these nails?
A: The 316 stainless steel variant supports 1.2kN per nail in tension for standard 4mm diameter nails, while the 6mm heavy-duty duplex steel (S31803) handles 1.8kN—sufficient to secure 50mm-thick ceramic fiber modules in high-pressure reactors.
Q: Can they be used in cryogenic environments?
A: Yes, 304 stainless steel retains 80% of its toughness at -50°C due to its low carbon content (<0.08%), making it suitable for liquid nitrogen storage tank insulation where temperatures drop to -196°C during maintenance.
Q: How do I prevent oxidation during installation?
A: For applications exceeding 1000°C, apply a ceramic coating (Al₂O₃-based) with 0.1mm thickness to the nail surface before embedding. This coating forms a protective barrier that enhances oxidation resistance at 1200°C by 50% compared to uncoated nails.
Q: Are custom sizes available?
A: Yes, we offer custom lengths (50-200mm) and material grades, including Hastelloy C-276 for extreme corrosion environments (e.g., chloride-rich offshore furnaces) and Inconel 600 for ultra-high temperatures up to 1250°C.
