Gas-Fired Batch Oven

The Gas-Fired Batch Oven is built for facilities where gas heating beats electric on cost, or where the available electrical supply cannot support a large oven. It is offered in 4-7 m internal depths, all sharing a 1.5 x 1.8 m cross-section, with custom sizes available to fit a specific part or building. This is the oven for high-volume production sites, large fabricators, and operations with ready access to natural gas that want to cure big or long parts in batches while keeping the running cost down.

Chamber size and capacity

Depth options of 4, 5, 6, and 7 m let you match the chamber to the longest parts you cure and the batch size you run, and custom sizes extend that further when a standard depth does not fit. The 1.5 x 1.8 m cross-section gives consistent height and width across every depth, so racking and fixtures carry over as you scale. The deeper chambers take long profiles, structural sections, and large assemblies, racked together for an efficient batch. Loading is by cart or overhead rail, so you can roll heavy parts in on a trolley or hang long parts from a track. As with any oven, spacing parts so air circulates around every face is what delivers an even cure across a large load.

Heating and running cost

This oven heats with gas, oil, or dual fuel, driven by a burner of up to 140 kW (478,000 BTU). Gas-fired heating typically uses an indirect burner that transfers heat through an exchanger, so combustion products stay separate from the air around your parts. The reason to choose gas at this scale is operating cost: at sustained high volume, gas commonly costs less per unit of heat than electric, which is the central point of our guide on gas versus electric curing ovens. Dual-fuel capability adds flexibility where you want a backup energy source or want to switch based on price, and the oil option serves sites without a gas connection. For large ovens, gas also sidesteps the heavy electrical supply a comparable electric unit would demand.

Cure profile and temperature uniformity

Maximum temperature is 205 C (400 F), covering the standard powder cure window. Cure is governed by the metal reaching its target temperature, typically in the 180-200 C range, and holding it for the specified dwell, with the timing taken from when the parts are hot rather than when the burner fires. Across chambers up to 7 m deep, even heating along the full depth is essential so a long part cures the same at the back as at the door. The oven circulates heated air through the whole chamber to bring the load to a uniform temperature, and heavy sections are given the soak time they need to come up to temperature throughout before the dwell is counted.

Construction and controls

The oven is insulated to retain heat across a large chamber and is managed by PLC temperature control. PLC control suits production work and documentation: stored programs, a precise setpoint, and repeatable cycles keep results consistent across shifts, and recorded cure profiles support quality and traceability on contract work. The control regulates the burner to hold a steady chamber temperature while the air system keeps that temperature even along the depth, so each batch cures the same way as the last regardless of which fuel you run.

Where it fits in your line

The Gas-Fired Batch Oven is the cure stage for a large, high-throughput finishing operation. It pairs with a coating booth sized for long or bulky parts and with a pretreatment line able to clean structural and large fabricated work before coating. A powder feed center keeps the booth supplied for the high spray volumes that large surface areas demand, so the booth and oven stay matched. With cart or overhead rail loading and custom sizing, it fits a wide range of building layouts, making it the practical cure choice for any large operation where gas economics or electrical limits point away from a big electric oven.