Software for the yard running engine-driven welders.

An engine-driven welder is the machine a crew reaches for when there is welding to do and no power to plug into. It carries its own engine, puts out welding current for stick, wire, and gouging, and runs a generator on the side so the same crew can power grinders, lights, and a pump off one unit. That makes it the default on pipeline, oilfield, and remote structural work. It also makes the welder hard to run as a rental fleet: the machine follows the crew from site to site, the engine racks up hours fast, and the lead sets and trailer that ride with it get dragged through dirt and steel. EquipFlow handles welders the way the yard that built it handles them — dispatch, billing, maintenance, and return inspection on one record per unit.

Built inside Rental King, right now.

Rental King is a heavy-equipment rental yard in Odessa and Midland, TX. They run engine-driven welders, manlifts, forklifts, light towers, generators, compressors, and water trucks on MSA contracts through the Permian Basin — 24/7, oilfield pace. EquipFlow was designed and first deployed inside that yard. Every feature was tested against their live operation before it shipped. The product runs there today.

Welders are high-idle, high-wear units, and that is exactly where money slips off a rental yard. A machine running on a pad while a crew waits on a fit-up earns nothing extra unless the standby hours reach the invoice, and a return that goes out the gate with a chewed lead set or a missing clamp loses money if the damage is never caught and charged. The hour meter is the spine of both maintenance and billing, so it has to be captured the same way every time — at return, on the inspection, against the rental record. When dispatch, billing, maintenance, and inspection all read from one unit record, the dispatcher quotes the right rate, the mechanic services against real engine hours, and the bookkeeper closes the month without rebuilding what happened from memory. That single-record discipline is what keeps a welder fleet from leaking on standby and lead loss.

Engine-Driven Welder specs the rental record tracks.

Every number below is a sourced specification range. The render layer is the only path these values reach the page — they live on the unit record, not in a dispatcher's head.

Rated welding output (DC)

260-575A

Peak generator power

11-19kW

Engine power

22-49hp

Fuel tank capacity

11-20gal

Operating weight

500-640lb

Rated duty cycle at max amperage

60-100%

How EquipFlow handles engine-driven welders on the dispatch board.

Engine-driven welders rarely sit still — a crew drags one from tie-in to tie-in, so the dispatch board treats each machine as a moving line on the driver-by-hour view rather than a yard fixture. The board shows which units are on location, which are loaded for delivery, and which are coming back, on the same responsive screen at any hour. The trap with welders is what rides with the machine: lead sets, a spool gun, the trailer, the lead rack, and the right consumable bundle. A welder dispatched without the leads or the trailer the customer expected is a return trip, so the dispatcher confirms what ships on the rental record before the truck leaves. Because crews ask for the same machine class during overlapping turnaround windows, the board flags double-bookings at the point of assignment instead of at the gate.

Billing engine-driven welders — MSA, standby, and site-level tax.

Most welder demand on the oilfield runs under an MSA, so the rate override lives on the customer record per equipment class, not in a lookup sheet the dispatcher keeps in their head. A welder rental created for that account picks up the negotiated rate on its own. Engine-driven welders are a standby case more than almost any other unit: a machine sits running or idle on a pad while a crew waits on a fit-up, an inspector, or a permit, and those hours bill at a standby rate separate from active welding time. The dispatcher marks standby and the invoice carries both lines without a month-end rebuild. Delivery, pickup, lead-set charges, and consumable bundles ride the same invoice. Tax jurisdiction follows the delivery-site record, so a machine that worked across more than one county still bills the right rate per site. Invoices post to QuickBooks Online on close.

Maintenance on engine-driven welders.

Welder PM is hour-meter driven, not calendar driven, because the engine is the wear item and a machine on a turnaround burns through an interval in weeks while a yard spare idles for a season. The hour reading posts when the return inspection records it, and the maintenance module advances the PM clock off that reading so the next service lands against real run time. Engine service carries the schedule — oil, filters, fuel filters, coolant, and air filters that pack solid in dusty oilfield air — alongside the welding side: brushes and slip rings on machines that have them, output connections, and the condition of the generator windings. Work orders, parts, and meter history live on the unit record, which is also where a damage charge from a return inspection turns into a repair ticket.

Engine-Driven Welder return inspections.

Two inspection rhythms apply. The operator-facing pre-use check belongs to the customer while the machine is on rent — fuel and oil levels, lead condition, and that the engine starts and holds output. The yard's own control is the return inspection. Before a welder comes off rent, the driver runs a mobile-web checklist on a phone — no app install — captures the hour-meter reading, and attaches required photos that cannot be skipped. Welder-specific checks matter here: lead and cable condition end to end, the lug and clamp condition, control-panel and gauge faces, generator receptacles, and whether the engine starts and produces clean output under a check load. The inspection ties to the rental record before the truck leaves the customer site, so a dispute over a chewed-up lead set or a no-start has photos and a timestamp behind it.

Common engine-driven welder classes in the field.

The product, the same way it runs for engine-driven welders.

The sections below are the EquipFlow modules that matter most when running engine-driven welders — each links to the full feature detail.

Operator guides for running engine-driven welders.

Field-tested playbooks that go deeper on pricing, dispatch, billing, and maintenance for fleets like this.

• Daily, Weekly, and Monthly Rental Rate Structure →
• Fuel and Environmental Charges on Rentals →
• How to Forecast Equipment Demand →
• How to Manage Parts Inventory for Repairs →

What you give up running engine-driven welders in EquipFlow.

EquipFlow is a web app, so the return inspection needs a signal to load. On a remote pad with no coverage, the driver cannot complete the mobile inspection at the customer site; most yards run the inspection at the yard on return instead, which means the photos and hour reading land later than ideal. There is no built-in telematics integration today, so engine hours and fault codes from a machine's own controller are not pulled automatically — the hour meter is read at return inspection. And the rate logic is built around the MSA-and-standby model the oilfield runs on; a yard with an unusual billing structure should bring it to the demo to be scoped honestly.