Refractory Anchors Manufacturer & Supplier in India
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Premium-Grade SS 304, SS 310, SS 330, SS 446 & Inconel Anchors for High-Temperature Industrial Applications CTA Buttons: Request a Quote | Download Catalogue
When industrial furnaces, kilns, and reactors push temperatures beyond 1,000°C, the refractory lining that protects their walls needs more than just bricks and castable — it needs the right anchoring system holding everything in place. That is exactly where refractory anchors become critical.
At Aashish Metals, we manufacture and supply a comprehensive range of refractory anchors engineered for extreme heat, chemical resistance, and long-term structural integrity. Our anchors are produced from high-performance alloys including Stainless Steel 304, 310, 330, 446, Inconel 600, and Inconel 601 — materials chosen specifically for their ability to retain strength and resist oxidation at elevated temperatures.
With over a decade of experience supplying to refineries, steel plants, cement kilns, and petrochemical units across India and internationally, we understand what industrial buyers need: consistent quality, fast dispatch, and technical support before and after purchase.
Whether you are sourcing V type refractory anchors, UV type anchors, or L type anchors for a new lining project or replacement, Aashish Metals delivers precision-made components that match your engineering drawings and timeline.
What Are Refractory Anchors?
Refractory anchors are metallic fastening elements welded or embedded into the shell of high-temperature vessels — furnaces, kilns, reactors, boilers, and incinerators — to mechanically grip and hold the refractory lining (bricks, castables, or ceramic fiber blankets) in position. Without adequate anchoring, thermal expansion and vibration forces would cause the lining to crack, spall, or collapse, exposing the vessel shell to dangerous heat levels.
These anchors are manufactured from heat-resistant alloys that maintain their mechanical properties well above 1,000°C. The most commonly used grades are SS 310, SS 330, SS 446, Inconel 600, and Inconel 601, each selected based on the specific temperature range, chemical environment, and cycling frequency of the application.
The anchor’s geometry — whether V, Y, UV, L, or delta-shaped — determines how load is distributed into the castable matrix and how the refractory is keyed in mechanically. Choosing the right anchor type, material, wire diameter, and leg height for your lining thickness and operating temperature is essential to lining longevity.
Quick-Reference: Refractory Anchor Types at a Glance
| Type | Shape Description | Typical Use |
|---|---|---|
| V Anchor | Single V-shaped leg | General castable lining, furnace walls |
| Y Anchor | Y-shaped with three legs | Thick castable linings, heavy-duty furnaces |
| UV Anchor | U + V combined shape | Hot gas ducts, reformer tunnels |
| L Anchor | L-shaped flat bar | Ceramic fiber blanket attachment |
| Delta Anchor | Triangular loop | Cylindrical vessels, rotary kilns |
| Hex Mesh | Hexagonal mesh panel | Large-area castable lining reinforcement |
Types of Refractory Anchors We Supply
Aashish Metals manufactures all major refractory anchor types in multiple grades and custom dimensions. Each anchor type is designed to address specific mechanical and thermal challenges within high-temperature linings.
V Type Refractory Anchors
The V type refractory anchor is the most widely used anchor design in industrial refractory linings. Formed from a single wire bent into a V-shape, these anchors are welded directly to the vessel shell and embedded into the castable refractory during pouring. The V geometry distributes tensile loads evenly across the refractory matrix, preventing delamination during thermal cycling.
Best for: Furnace walls, boiler linings, incinerator chambers, industrial ovens.
Y Type Refractory Anchors
Y type anchors (also called Y anchor refractory) add a third leg to the V geometry, increasing the anchor’s grip area within the castable. This makes them the preferred choice for thick linings where higher pullout strength is needed. The third leg also helps support the castable against gravitational loading in roof and ceiling applications.
Best for: Furnace roofs, thick-walled reactors, catalytic reformers.
UV Type Refractory Anchors
UV type anchors combine a U-shaped base with a V-shaped top, providing an extended keying depth ideal for multilayer or extra-thick castable applications. The combined shape resists both tensile and shear forces, making it suitable for high-vibration environments.
Best for: Hot gas ducts, reformer tunnels, cracking furnaces.
L Type Refractory Anchors
L type anchors feature a flat L-shaped profile and are primarily used to secure ceramic fiber blankets and lightweight refractories to vessel walls. They are simpler in form but require precision in weld placement to ensure uniform blanket compression.
Best for: Ceramic fiber lining systems, annealing furnaces, box furnaces.
Anchor Types Comparison Table
| Anchor Type | Wire / Bar Dimensions | Key Strength | Max. Temp Rating | Material Grades Available |
|---|---|---|---|---|
| V Type | 3 mm – 8 mm wire dia | Tensile, anti-delamination | Up to 1,200°C | SS 304, 310, 330, 446, Inconel 600/601 |
| Y Type | 4 mm – 8 mm wire dia | High pullout, gravity load | Up to 1,200°C | SS 310, 330, 446, Inconel 600/601 |
| UV Type | 4 mm – 10 mm wire dia | Tensile + Shear combined | Up to 1,250°C | SS 310, 330, 446, Inconel 601 |
| L Type | 3 mm – 6 mm flat bar | Blanket retention | Up to 1,100°C | SS 304, 310, 316 |
| Delta | 5 mm – 10 mm wire dia | Cylindrical vessel linings | Up to 1,200°C | SS 310, 446, Inconel 600 |
| Hex Mesh | 0.8 mm – 2 mm sheet | Large-area reinforcement | Up to 1,150°C | SS 304, 310, 316 |
Technical Data
Refractory Anchors Technical Specifications
Aashish Metals manufactures refractory anchors to customer-specified dimensions or standard configurations. Below are the general technical parameters for our stainless steel and high-alloy refractory anchors.
| Parameter | Standard range | Custom range |
|---|---|---|
| Wire diameter | 3 mm – 8 mm | Up to 12 mm |
| Leg height (H) | 30 mm – 150 mm | Per drawing |
| Leg spread (W) | 20 mm – 100 mm | Per drawing |
| Overall anchor length | 50 mm – 300 mm | Per drawing |
| Surface finish | Mill finish / Pickled | Electropolished on request |
| Weld base | Plain / with stud | Per application requirement |
Refractory Anchors Material & Temperature Rating
| Grade | Standard | Max. continuous temp. | Key property |
|---|---|---|---|
| SS 304 / 304L | ASTM A276 | 870 °C | General-purpose heat resistance |
| SS 310 / 310S | ASTM A276 | 1,100 °C | High-temperature oxidation resistance |
| SS 330 | ASTM A276 | 1,150 °C | Carburization resistance, high creep strength |
| SS 446 | ASTM A276 | 1,175 °C | Superior oxidation resistance, low thermal expansion |
| Inconel 600 | ASTM B166 | 1,175 °C | Excellent high-temp strength & corrosion resistance |
| Inconel 601 | ASTM B166 | 1,250 °C | Outstanding oxidation resistance above 1,000 °C |
| Alloy 20 | ASTM B473 | 870 °C | Sulphuric acid & chemical resistance |
Applicable Standards & Certifications
| Standard | Application |
|---|---|
| ASTM A276 | Stainless steel bar and shapes |
| ASTM B166 / B168 | Nickel-chromium-iron alloy wire & strip |
| EN 10204 3.1 / 3.2 | Mill Test Certificate – chemical & mechanical |
| ISO 9001:2015 | Quality Management System |
| ASME SA-276 | Pressure vessel grade stainless bars |
Custom Manufacturing Available: Aashish Metals fabricates refractory anchors to customer-supplied drawings in any grade listed above. We also supply anchors with pre-applied anti-oxidant coating for extended service life.
Refractory Anchors Applications & Industries
Refractory anchors are critical fastening components in every industry where processes operate at sustained high temperatures. Aashish Metals supplies anchors to a wide range of sectors, each with its own demanding requirements for heat resistance, dimensional stability, and material compatibility.
| Industry / Equipment | Anchor type used | Grade recommended | Operating temperature |
|---|---|---|---|
| Petroleum Refinery (FCC Units) | V, Y, UV Type | SS 310, Inconel 601 | 700 °C – 1,100 °C |
| Petrochemical (Reformer Furnaces) | UV, Delta Type | SS 330, Inconel 600 | 900 °C – 1,200 °C |
| Steel Plant (Reheating Furnaces) | V, Y Type | SS 310, SS 446 | 800 °C – 1,200 °C |
| Cement Kiln (Preheater Cyclones) | V, Y Type | SS 310S, SS 446 | 700 °C – 1,100 °C |
| Glass Furnace (Regenerators) | V, Delta Type | Inconel 601, SS 446 | 1,000 °C – 1,250 °C |
| Waste-to-Energy Incinerators | V, Y Type | SS 310, Inconel 600 | 850 °C – 1,100 °C |
| Aluminium Smelting Furnaces | L, V Type | SS 310, SS 330 | 700 °C – 1,000 °C |
| Copper Smelting Furnaces | V, UV Type | SS 330, Inconel 600 | 900 °C – 1,150 °C |
| Power Plant Boilers | V, Y Type | SS 310S, SS 304 | 600 °C – 900 °C |
| Ceramic Fiber Lining Systems | L Type | SS 304, SS 310 | Up to 1,100 °C |
| Heat Treatment (Annealing Ovens) | L, V Type | SS 304, SS 316 | 500 °C – 900 °C |
| Rotary Kilns (Lime, Dolomite) | Delta, V Type | SS 446, Inconel 600 | 1,000 °C – 1,200 °C |
Our stainless steel refractory anchors are particularly valued in:
- FCC Regenerators in oil refineries, where erosion-resistant castable requires high pullout-strength Y-type anchors in SS 310 or Inconel 601
- Reformer Furnace Tubes, where UV type anchors in SS 330 support insulating castable against both gravity and vibration loads
- Rotary Cement Kilns, where the continuous rotation demands delta anchors with superior fatigue resistance and oxidation protection at 1,000 °C+
- Ceramic Fiber Lining Projects in annealing lines, where L type SS 304 anchors provide the simplest, most cost-effective retention system
Aashish Metals vs. Other Suppliers
| Feature | Aashish Metals | Typical trader / stockist |
|---|---|---|
| Manufacturing | In-house, custom bending & forming | Reseller, no fabrication |
| Material grades | SS 304, 310, 330, 446, Inconel 600/601 | Limited to 304, 310 only |
| EN 10204 3.1 MTC | Standard with every lot | Often not available |
| Custom dimensions | Available, no MOQ constraint | Standard sizes only |
| Technical support | Grade selection, drawing review | None |
| Delivery lead time | 5–7 working days (stock grades) | 2–4 weeks |
| Export experience | Extensive — UAE, Southeast Asia, Africa | Domestic only |
| PMI testing | Available on request | Not offered |
Features & Benefits of Aashish Metals Refractory Anchors
Key Product Features
- High-Temperature Stability: Manufactured from SS 310, SS 330, SS 446, and Inconel alloys that retain mechanical strength at continuous operating temperatures of 870°C to 1,250°C without creep or distortion.
- Oxidation & Scaling Resistance: High chromium and nickel content in our anchor alloys forms a stable oxide layer, preventing surface degradation and scale loss in oxidizing atmospheres.
- Carburization Resistance: SS 330 and Inconel 601 grades resist carbon absorption in furnace atmospheres where hydrocarbon exposure is frequent.
- Dimensional Precision: All anchors are bent to exact leg-height and spread tolerances (±0.5 mm) ensuring consistent embedment depth across large lining areas.
- Weldability: Our anchors are supplied in mill-annealed condition for easy stud welding or MIG/TIG attachment to carbon steel or stainless steel shells.
- Custom Fabrication: Available in any shape — V, Y, UV, L, delta, or hex mesh — per customer drawing, with no minimum order quantity for standard grades.
- Multi-Grade Stock: Aashish Metals stocks SS 304, 310, 330, 446, Inconel 600, and Inconel 601 wire in multiple diameters for immediate availability and faster delivery.
- EN 10204 3.1 MTCs Included: Every lot ships with a full Material Test Certificate covering chemical composition and mechanical properties.
Business & Supply Benefits
- Competitive refractory anchors price with volume discounts available for project-quantity orders
- Fast turnaround: standard grades dispatched within 5–7 working days of order confirmation
- Packaging in moisture-proof bundles to prevent surface oxidation during transit
- Technical support for anchor selection based on lining thickness, operating temperature, and castable type
- Export-ready documentation: COA, MSDS, packing list, and country-of-origin certificate available on request
- Direct mill sourcing ensures full material traceability from melt to finished anchor
How to Choose the Right Grade
SS 304 is adequate for non-critical applications up to 870°C with light oxidizing atmospheres. It is commonly used in L type anchors for ceramic fiber systems.
SS 310 / 310S is the workhorse grade for most industrial furnace linings. Its higher chromium and nickel content delivers excellent oxidation resistance and mechanical stability up to 1,100°C. A majority of V type and Y type anchors for refinery and steel plant use are specified in SS 310.
SS 330 excels in atmospheres rich in carbon monoxide or hydrocarbons where carburization is a concern. Its high nickel content (34–37%) makes it highly resistant to carbon diffusion and thermal shock. It is the preferred grade for reformer furnace anchors.
SS 446 offers the highest oxidation resistance among ferritic stainless steels and is favoured where low thermal expansion is important, such as in tight-clearance kiln linings and high-cycling furnaces.
Inconel 600 and 601 are nickel-based superalloys used in the most demanding applications above 1,100°C. Inconel 601 with its aluminium addition is particularly resistant to scaling and is specified for glass furnace regenerators, ethylene cracker furnaces, and other ultra-high-temperature systems.
Need help choosing a grade? Our technical team can recommend the optimal alloy for your operating temperature, atmosphere, and lining system. Contact us with your process parameters for a free grade recommendation.
Quality Assurance & Certifications
At Aashish Metals, quality is built into every stage of the refractory anchor production process — from raw material sourcing to final dispatch. We do not simply test at the end; we control quality at every step.
Quality Control Process
| Stage | Quality Check | Method |
|---|---|---|
| Raw Material Incoming | Grade verification & PMI test | Positive Material Identification (PMI) gun |
| Wire Cutting | Diameter & length tolerance check | Digital vernier & micrometer |
| Bending / Forming | Geometry: leg height, spread, angle | Fixture gauge & CMM inspection |
| Welding (if applicable) | Weld strength, visual inspection | Destructive pull test + visual |
| Surface Finish | Mill finish / Pickle & passivation | Visual + acid test |
| Final Lot Inspection | Dimension, quantity, tagging | AQL sampling per ISO 2859 |
| Documentation | MTC, COA, packing list | EN 10204 3.1 format |
Certifications Held
- ISO 9001:2015 — Quality Management System certified
- EN 10204 3.1 Mill Test Certificates — issued with every lot
- NABL-Accredited Lab Testing — third-party chemical and mechanical test reports available
- 3.2 Dual Certification — available on request for critical project requirements
- RoHS Compliant — materials free from restricted hazardous substances
Traceability
Every batch of refractory anchors shipped from Aashish Metals carries a unique lot number traceable back to the original mill heat number. This traceability chain — from raw wire to finished anchor — is documented in our Material Test Certificate and is available for audit at any time.
Packaging & Dispatch
Finished anchors are bundled, tagged with grade, size, and heat number, then packed in moisture-proof polythene bags inside corrugated cartons. Export shipments are additionally packed in wooden crates where required. Our standard dispatch lead time for stock grades is 5–7 working days after order confirmation.
Why Choose Aashish Metals as Your Refractory Anchor Manufacturer?
There are many refractory anchor suppliers in India. Here is what makes Aashish Metals different:
Aashish Metals vs. Other Suppliers
| Feature | Aashish Metals | Typical Trader / Stockist |
|---|---|---|
| Manufacturing | In-house, custom bending & forming | Reseller, no fabrication |
| Material Grades | SS 304, 310, 330, 446, Inconel 600/601 | Limited to 304, 310 only |
| EN 10204 3.1 MTC | Standard with every lot | Often not available |
| Custom Dimensions | Available, no MOQ constraint | Standard sizes only |
| Technical Support | Grade selection, drawing review | None |
| Delivery Lead Time | 5–7 working days (stock grades) | 2–4 weeks |
| Export Experience | Extensive — UAE, Southeast Asia, Africa | Domestic only |
| PMI Testing | Available on request | Not offered |
Our Reach
- Domestic Supply: PAN India — Mumbai, Pune, Ahmedabad, Surat, Delhi NCR, Chennai, Hyderabad, Vizag
- Export Supply: UAE, Saudi Arabia, Qatar, Oman, Singapore, Malaysia, South Africa, Kenya
- Industries Served: Oil & Gas, Petrochemicals, Steel, Cement, Glass, Aluminium, Power, Waste-to-Energy
Refractory Anchors: Frequently Asked Questions
V-type, UV-type and L-type anchors as standard, plus Y-type and specialist shapes formed to a drawing, in heat-resisting grades from 304 through 310 and 321 to Inconel. V-type is the general-purpose volume anchor and UV-type gives a longer grip for thicker linings. If a type or grade is not listed, ask, because we form to requirement.
By the hot-face temperature of the lining. As a guide, 304 suits up to around 850 C, 321 to around 900 C, 310 to around 1050 C and Inconel above 1100 C. The anchor must not soften or scale at the service temperature or it will let the refractory fall, so the grade is matched to the temperature and, where relevant, the atmosphere.
The shape and the grip. A V-type is a simple V welded to the shell at its open ends, the general-purpose anchor for most linings. A UV-type has a rounded or looped top that gives a longer, stronger grip into the refractory, used for thicker linings or where extra hold is needed. Both are chosen alongside the grade and the spacing.
To allow for expansion. The metal anchor grows more than the refractory when heated, so the tips are capped with a ceramic cover or a wax coat that burns out in service, leaving a small gap. That gap lets the anchor expand without pushing on and cracking the lining. It is a small detail that has a large effect on how long a lining lasts.
Yes. Every order ships with an EN 10204 mill test certificate for the anchor grade, heat-number traceable, with positive material identification available at order stage. This matters because the anchor grade is chosen for the service temperature, and the certificate confirms the grade supplied is the grade specified.
Get the Best Price on Refractory Anchors — Request a Quote Today
Tell us your anchor type, alloy grade, dimensions, and quantity — and we will send you a detailed quote with material availability and delivery timeline within 24 hours. Aashish Metals is your trusted refractory anchors manufacturer in India, supplying precision-engineered anchors to domestic and international projects since our founding.
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