Stainless Steel Refractory Anchors Manufacturer

Refractory anchors are heat-resistant metal anchors welded to the steel shell of high-temperature equipment to mechanically hold the refractory lining in place. They grip castable, gunning or ceramic-fiber refractory so it cannot sag, crack away or fall off under heat, vibration and thermal cycling, and are made in stainless and nickel-alloy grades matched to the operating temperature.

Stainless steel refractory anchors are heat-resistant metal anchors — welded to a furnace, boiler or reactor shell — that mechanically hold refractory lining (castable, gunning or ceramic fiber) in place. Made in grades such as SS304, SS316, SS310, SS321 and SS330, they withstand high temperature, thermal cycling and oxidation, and are usually custom-made to customer drawings.

They keep the refractory lining attached to the shell. Refractory is heavy and brittle, and heat makes it expand, contract and crack; without anchors it would sag and fall away from walls and roofs. Anchors transfer the lining's weight and thermal load back into the steel structure, keeping the lining intact and the equipment protected.

Mechanical retention and support: they hold monolithic or fiber refractory against the shell, distribute its weight, accommodate thermal expansion and resist the vibration and thermal cycling of furnace operation — while resisting oxidation and corrosion at temperature so they last as long as the lining.

Refineries, petrochemical and chemical plants, fertilizer plants, cement plants, steel plants, power plants, waste incinerators and any operation running furnaces, kilns, boilers, reactors, process heaters and thermal-processing equipment that is lined with refractory.

Yes — this is our specialty. We manufacture refractory anchors exactly to customer drawings, samples, sketches and technical specifications, including custom dimensions, wire diameters, flat-bar sizes, bending profiles, welding details and materials. Most refractory anchors used on real projects are custom-made, and we are set up specifically to produce non-standard anchors to spec.

Yes. Custom manufacturing is the core of our business. Send a drawing, a sketch or a sample and we will produce the anchor to match — in prototype quantities for trials or full production quantities for projects, in the grade and form your lining and temperature require.

Yes. We routinely reverse-engineer refractory anchors from a physical sample — measuring the geometry, wire/bar size and material — and reproduce it accurately, which is ideal when the original drawing is unavailable or you need a like-for-like replacement.

Ideally a drawing or sketch (or sample), the anchor type, material grade, wire diameter or flat-bar size, key dimensions, quantity and your delivery location. If you are unsure, send your lining type, thickness and operating temperature and our team will recommend a suitable anchor and grade and quote.

Yes. Non-standard and project-specific anchors are exactly what we make. Most refractory anchors used in industrial projects are custom-made, and we specialize in manufacturing non-standard anchors according to customer specifications — special shapes, sizes, materials and welding requirements included.

Both. We make small prototype quantities for trials and qualification, and large production quantities for full projects and turnarounds. Order quantities are flexible to suit your project stage.

Heat-resistant stainless steels — SS304, SS304L, SS316, SS316L, SS310, SS310S, SS321 and SS330 — and nickel alloys such as Inconel 600 and Inconel 601 for the highest temperatures. The grade is chosen to match the maximum service temperature and the corrosivity of the atmosphere; other grades are available on request.

It depends on temperature and atmosphere. SS304/316 suit moderate temperatures, SS321 is used for elevated temperature with good stability, and SS310/310S and SS330 are the workhorses for high-temperature furnace service. For the most severe heat and corrosive atmospheres, Inconel 600/601 is used. We help select the right grade for your duty.

SS310 / SS310S is used for high-temperature refractory anchors — continuous service up to roughly 1100 °C — thanks to its high chromium and nickel, which give excellent oxidation and scaling resistance. It is the most common high-temperature anchor grade in furnaces, heaters and boilers.

SS321 is a titanium-stabilised grade used where the anchor runs hot enough to risk carbide precipitation in plain 304 — roughly up to 870–900 °C. The titanium stabilisation resists sensitisation and gives good elevated-temperature strength, making it a solid mid-to-high-temperature anchor material.

SS304 is a general-purpose grade good to about 870 °C; SS310 is far more highly alloyed (about 25% chromium, 20% nickel) and handles continuous service to about 1100 °C with much better oxidation and scaling resistance. Use SS304 for moderate temperatures and SS310 for genuinely high-temperature furnace linings.

SS330 (UNS N08330, often called RA330) is a high-nickel heat-resistant alloy used for very high-temperature anchors — to around 1150 °C — with excellent resistance to carburisation and thermal cycling, common in heat-treatment furnaces and process heaters.

Inconel 600 and 601 are used for the hottest and most aggressive service — up to roughly 1150–1200 °C — and in reducing, cyclic or sulphidising atmospheres where stainless grades reach their limit. They cost more, so they are specified where the temperature and atmosphere genuinely require it. See our dedicated Inconel refractory anchors page.

A V type refractory anchor is a V-shaped wire anchor welded to the shell by its two legs (or stem), forming the most common and economical anchor for monolithic (castable and gunning) refractory in furnaces, ducts and boilers. It gives reliable general-purpose grip for thin to medium lining thicknesses.

A Y type refractory anchor has a single stem that splits into two legs forming a Y. Welded by the stem, it anchors deeper into the lining and suits medium-to-thick monolithic refractory in petrochemical heaters, reactors and furnaces, giving better grip than a simple V for heavier linings.

A Flat Type Y anchor is a Y-shaped anchor manufactured from flat bar rather than round wire. The flat section is suited to thicker refractory linings and gives improved load distribution and holding power, which is why it is widely used in petrochemical heaters, reactors, furnaces and boilers with heavy castable linings.

Both are Y-shaped, but a standard Y anchor is made from round wire while a Flat Type Y is made from flat bar. The flat bar spreads load over a larger surface, so the Flat Type Y holds thicker, heavier linings better and distributes stress more evenly — preferred on demanding petrochemical and furnace linings.

An H type anchor is a high-holding-power anchor (often corrugated) that resembles a double-V or H form, used for thick and heavy monolithic linings where maximum retention is needed. The corrugations key into the castable to resist pull-out.

A UV type anchor combines U and V geometry to give additional anchoring points, suiting heavier or thicker linings that need more grip than a single V provides. It is welded to the shell and keys deep into the refractory.

A bull horn anchor has two curved legs that splay outward like horns, giving high pull-out resistance in thick, heavy castable linings. The curved geometry locks into the refractory, making it a strong choice for demanding high-load linings.

A crook anchor is a simple single-leg anchor bent into a crook or hook, welded to the shell, used for thinner refractory and ceramic-fiber linings. It is economical and quick to install where heavy holding power is not required.

An L type anchor is an L-shaped (right-angle) anchor or stud used to retain refractory tiles, bricks and lining edges, and as a base for brick-holding systems. It is welded to the shell with the leg engaging the refractory.

A slitted anchor is a flat metal strip with slits (often expanded) that key mechanically into monolithic or ceramic-fiber refractory, giving good grip with a low-profile, weldable base. It suits a range of lining thicknesses.

A refractory brick holder (brick anchor/clip) is a metal clip or holder that mechanically retains refractory bricks or tiles against the shell — used where the lining is brick rather than castable, holding the bricks securely against gravity and vibration.

A twist-lock anchor is a stud-welded serrated anchor used to hold ceramic-fiber blanket: the blanket is impaled over the stud and a twist-lock washer is twisted onto the serrations to lock it. It is the standard fixing for fiber-lined furnaces and ducts. See our Insultwist twist-lock studs.

A twist-lock washer (fibrelok / pressed lock washer) is a pressed metal washer with a central slot that pushes over the serrated section of a twist-lock anchor and twists a quarter-turn to lock the ceramic-fiber blanket in place at the hot face.

A speed clip washer is a pressed clip that pushes onto an anchor's serrations (or round rod) to quickly retain intermediate layers of ceramic-fiber blanket during installation, before the final lock washer is fitted.

A stud anchor (weld stud / pin) is a straight or headed pin welded to the shell to anchor ceramic-fiber or monolithic refractory. Studs are simple, fast to apply by stud welding, and used in large numbers across fiber-lined surfaces.

A christmas-tree anchor has multiple branching legs along a central stem (like a tree), giving many grip points and very high holding power in thick, heavy monolithic linings. It is used where maximum retention over a large lining depth is required.

Anchors are welded to the shell on a grid pattern (commonly stud-welded or fillet-welded), with spacing set by the lining type, thickness, orientation and the refractory supplier's specification — typically closer on roofs and overhangs than on walls. The anchor length is matched to the lining thickness so the tip stays below the hot face.

Yes. Refractory anchors are supplied with EN 10204 3.1 mill test certificates confirming the material grade and chemistry, with full raw-material verification and batch traceability.

Yes. Positive Material Identification (PMI) by XRF or optical emission is available on request to confirm the alloy of the finished anchors, with the PMI report included in the documentation.

Raw-material verification, PMI testing, dimensional inspection against the drawing, visual inspection of forming and welds, and a final inspection report — with batch traceability throughout. Tesco Steel & Engineering is an ISO 9001:2015 certified manufacturer.

Lead time depends on type, grade, quantity and whether tooling/sample approval is needed — prototypes are fast, and production quantities are scheduled to your project. Send your drawing and quantity and we will confirm a delivery date with the quote.

Yes. We are a manufacturer and exporter and ship refractory anchors worldwide with appropriate export and custom packaging. We have export experience across the Middle East, Europe, Asia, Africa and the Americas, and handle the documentation required for import compliance.