Daiwa CA Lance

What We Can Offer?
High Heat-Resistant Oxygen Lance Pipes in Furnaces

Daiwa CA Lance is a calorized lance pipe — a heat-resistant oxygen lance pipe engineered for steelmaking and other high-temperature furnace-side work.

At Daiwa Lance, Daiwa CA Lance is manufactured with a calorizing surface modification and reinforced with a protective ceramic coating on the inner and outer surfaces. This dual-layer protection is designed to improve service life, enhance heat and oxidation resistance, and help achieve lower pipe consumption in demanding operations.

Using advanced calorizing technology, Daiwa CA Lance can deliver up to 3x-10x higher strength for blowing and injecting oxygen into liquid or molten steel, depending on operating conditions.

*Note: The calorized layer and ceramic coating can be applied in different thicknesses to match each customer’s furnace environment, process severity, and performance requirements.

Technical Specifications
Principle
Practical Applications
Advantages
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Technical Specifications

Structure

Daiwa CA Lance has a 3-layer design for stronger heat and oxidation resistance.

Mild steel base pipe: The core pipe for oxygen delivery and mechanical strength.
Calorized layer (inside & outside): Aluminum diffuses into the steel surface to form an aluminum–iron alloy layer, which supports high-temperature oxidation resistance and helps form a protective alumina film during service.
Refractory ceramic coating (inside & outside): An additional barrier over the calorized surfaces to improve resistance against direct heat attack in severe furnace-side conditions.

Size

Daiwa CA Lance is available in a wide range of standard sizes to fit different furnace setups and injection needs. Typical outside diameters (OD) range from 1/4” to 2”, with wall thickness commonly around 2.0–4.0 mm depending on the diameter.

Connection Type

To match different furnace setups and operating methods, Daiwa CA Lance is available in multiple types / end configurations.

Common connection options are grouped into two categories: threaded and non-threaded. Within the non-threaded category, the typical choices are plain end and press-coupling end. The practical goal is simple—select the connection style that best fits your lance holder, your handling method, and the way your team replaces pipes on site.

Type 1 : Both ends are threaded and fitted with one screw socket and one plastic cap. Full coating from end to end.
Type 2 : Both ends are threaded and fitted with one screw socket and one plastic cap. One end is free of coating about 200mm.
Type 3 : Both ends are threaded and fitted with one screw socket and one plastic cap. Both ends are free of coating about 200mm.
Type 4 : Both ends are plain, with no thread. Both ends are free of coating about 200mm.
Type 5 : Both ends are plain, with no thread. Both ends are free of coating about 200mm and 40mm, respectively.
Type 6 : One end is fitted with a press coupling. Other end is free of coating about 200mm.

Operating Principle

The key principle of Daiwa CA Lance’s heat resistance and durability lies in the calorized layer: during the calorizing process, aluminum diffuses into the steel surface and forms an aluminum–iron alloy layer that becomes the foundation of high-temperature protection.

When the pipe is exposed to furnace heat, this surface reacts to form a heat-resistant aluminum oxide film (alumina film). This alumina film works like a protective barrier that slows severe oxidation and helps the mild steel base maintain integrity longer in aggressive furnace atmospheres.

In Daiwa CA Lance, the calorized protection is further supported by a refractory ceramic coating, creating a dual-layer system designed to improve service life and reduce replacement frequency in oxygen blowing and injection-related operations.

Practical Applications

Oxygen blowing to cut steel scrap and refine molten steel in Electric Arc Furnace (EAF) operations.
Carbon injection and lime powder injection (and other additives) for adjusting grades of carbon steels.
Oxygen lancing to cut and melt, and to remove residual slags adhered inside the oxygen converter.
Blowing inert gases such as nitrogen and argon in secondary metallurgy (ladle furnace) or smelter-related work, depending on your process setup.
Thermocouple protection against high-temperature molten liquids in aluminum, copper, and zinc melting furnaces.
Flux injection to help purify aluminum by blowing inert gas and chloride or fluoride salt powder, supporting impurity removal and hydrogen reduction.
Other high-heat duties that require strong resistance against heat, severe oxidation, sulfuration, and vanadium attack.

Advantages

Minimum Consumption

Daiwa CA Lance helps reduce lance consumption in high-heat operations by combining a calorized aluminum-alloy layer with a refractory ceramic coating for stronger heat and oxidation resistance.

Superior Quality

Daiwa Lance uses high-quality raw materials and maintains strict quality control throughout production to deliver consistent calorized lance pipe performance.

Economical Price

Since 1955, Daiwa Lance has kept pricing competitive through large-scale manufacturing, supplying lance products to customers in 55+ countries worldwide.

FAQ

What is a calorized lance pipe?

A calorized lance pipe is a heat-resistant oxygen lance pipe made from mild steel with a heat-resistant calorized layer and refractory ceramic coating on the interior and exterior surfaces for harsh furnace service.

What is Daiwa CA Lance used for?

Daiwa CA Lance is used for oxygen blowing, carbon and lime powder injection, other additive injection, slag-removal-related oxygen service, inert gas blowing in some furnace applications, and thermocouple protection in certain molten-metal environments.

Why does Daiwa CA Lance last longer than mild steel lance pipe?

Because the heat-resistant calorized layer and refractory ceramic coating improve heat resistance and anti-oxidation, and the surface forms a protective alumina film at high temperature. Daiwa CA Lance can last 3 to 10 times longer than mild steel lances, although actual consumption still depends on operating conditions.

Does a calorized lance pipe always perform the same way?

No. Service life varies with furnace condition, oxygen setup, process severity, operator method, and the exact configuration being used.

When should you use a calorized lance pipe?

Usually when your process requires a more heat-resistant and oxidation-resistant pipe for repeated injection work rather than a self-consuming cutting or lancing product.