Factory Visit Checklist: What to Look At

A factory visit for a mill-scale shear purchase is not a tour — it is an inspection with a list. This article is the list: what to look at in the welding cells, the hydraulic assembly, the test floor and the machines in build, and which questions to ask while standing in each place. The reference machine is the Q91-1600, the three-shift mill class, where the build details are the purchase. The full range publishes the class boundaries, and the verification guide covers the document checks to complete before you travel.

Before You Travel

Two documents make the visit worth the flight. The first is the specification your quotation is written against — the material list, the duty declaration, the configuration decisions — because the visit verifies the build that specification describes. The second is the list of questions each department should answer, sent ahead, so the right people are on the floor rather than in a meeting room. A factory that receives both is a factory preparing for an inspection; a factory that receives neither is preparing a tour.

The Welding Cells

The frame is the machine, and the welding cells are where it is made. Look at three things:

The process. Automated and manual welding cells, weld quality consistent unit to unit, and a stress-relief process after welding. Ask which cells build the gantry frames and whether the 1600-class frame is built in the same cells as the smaller classes or dedicated ones. The answer tells you whether the flagship is a flagship build or a scaled-up production machine.

The steel. What plate stock the frames are cut from, and whether the material certificates for your frame will ship with the documentation pack. Wear-resistant steel plate in the frame, chamber and guarding is a specification item at this duty, and the stock on the floor should match the quotation.

The inspection points. Where in the process welds are inspected, by whom, and what a failed inspection does to the unit. A factory with documented inspection points describes them without being asked; a factory that describes them vaguely is describing an aspiration.

The Hydraulic Assembly

The hydraulic package decides whether the machine holds its duty rating, and the assembly area is where it is built:

The components. Which pumps, valves and seals are specified for the declared duty, and whether the brands are named in the build documentation. At three-shift duty the seal specification is a production risk rather than a parts line, and the assembly floor should show the grade the quotation promised.

The cleanliness discipline. Oil cleanliness decides seal life as much as the seal grade does, and the assembly area shows the discipline: clean assembly, filtered filling, documented test procedures. A factory that assembles hydraulics in a clean area is describing an uptime practice; a factory that assembles them beside the welding cells is describing a repair history.

The test bench. Whether power units are test-run before installation, and what the test record contains. A factory that bench-tests every power unit has a procedure; a factory that bench-tests some has a habit.

The Test Floor

The test floor is where the machine proves itself before shipment, and it is the most informative room in the factory:

The load test. How the machine is tested, to what load, for how long, and what the record contains. Ask to see a completed test record for a machine of your class — the document is either produced or it is not, and the answer settles the quality-system question faster than any certificate.

The machines in build. Walk past the machines under construction. Weld quality, assembly tidiness, the stage documentation each unit carries — a factory mid-build shows its process more honestly than any showroom, and the machines in build are the specification you will receive.

The blade stock. What blade steel is on the shelf, in what hardness range, and whether the regrind and edge-preparation equipment is in-house. The blade specification is a decade-long cost line, and the factory that hardens and prepares its own blades controls it.

The Questions to Ask On Site

• Who welds my frame, and who inspects it? Names and roles, not departments.
• What seal grade is specified at my declared duty, and why? The answer is a specification or a deflection.
• Can I see a completed load test record for this class? The document is produced or it is not.
• What is the wear-part replacement procedure, in hours and crane time? The procedure is documented or improvised.
• Who commissions my machine, and where are they based? Factory engineers are an asset; contractors are an arrangement.

A factory that answers all five on the floor is describing the build process your quotation was written against — and the verification guide covers the document checks to complete before you travel.

The Blade Stock

One stop on the visit is the blade stock and the hardening equipment, and it is more informative than its size suggests. Look at what blade steel is on the shelf, in what hardness range, and whether the edge preparation and regrind equipment is in-house. A factory that hardens and prepares its own blades controls the blade specification — the grade, the hardness range, the edge geometry — end to end, and the blade life figure it quotes is a build process rather than a supplier’s average.

Ask to see a blade set mid-preparation: the edge geometry, the hardness testing, the seat condition after preparation. The answers describe the decade-long cost line your machine will run on, and they are visible in one room in a way no document can show.

The Visit Report

Write the report the same week, while the floor is fresh: what you saw in the welding cells, the hydraulic assembly, the test floor and the blade stock, and which of the five questions were answered with specifics. The report is what you compare against the quotation when it arrives — and if the quotation describes a different build than the one you walked past, the difference is the conversation to have before the order rather than after.

The visit settles what documents cannot, and the documents settle what the visit cannot reach — the verification guide covers the document checks to complete before you travel, and together the two are the factory-side half of the purchase.

The Welding Cells, Detailed

The welding cells deserve more than a walk-past, because the frame is the machine and the weld is the frame. Look at the weld quality on the machines in build — consistent bead, no undercut, no visible porosity — and ask which cells build the gantry frames and whether the flagship class is built in dedicated cells or shared with the smaller machines. The answer tells you whether the largest machine in the range is a flagship build or a scaled-up production machine, and at mill scale the difference is structural rather than cosmetic.

Ask about the stress-relief process too: after welding, the frame is heat-treated to relieve the internal stresses the welding introduced, and a frame that skips it distorts under load in year three rather than in year thirty. The process is either documented or it is not, and the answer is visible in one conversation on the floor.

The Visit as an Investment

The visit costs a flight and two days, and it settles what no document can: whether the factory on the website is the factory on the floor. The machines in build show the process more honestly than any showroom, and the answers to the five questions — with the weld cells and the test floor as witnesses — are the factory-side half of the purchase.

For a first mill-scale order the investment is easy to justify. For a second order from the same factory it is unnecessary, because the first visit’s report is still on file — and that is the point: the verification is done once and the habit carries it forward.

Buyer FAQ

Is a factory visit necessary for every order?

Not for every order. For a first mill-scale purchase it settles what documents cannot, and the machines in build show the process more honestly than any showroom.

What is the most informative room in the factory?

The test floor. A completed load test record for your class is either produced or it is not, and the answer settles the quality-system question in one minute.

What should I send before traveling?

The specification your quotation is written against — material list, duty declaration, configuration decisions — and the list of questions each department should answer, so the right people are on the floor.

What if the factory discourages the visit?

That is the answer. A factory expecting to still be answering the phone in year five welcomes the inspection; the alternatives describe something else.

Can commissioning be done remotely?

For experienced automation buyers, usually yes. At mill scale, on-site commissioning is quotable and the first-month difference usually pays for it — test runs on your material, training across shift teams, and the maintenance window placed inside the production plan. Write the report the same week, while the floor is fresh, and compare it against the quotation when it arrives — if the quotation describes a different build than the one you walked past, that difference is the conversation to have before the order. The visit settles what documents cannot and the documents settle what the visit cannot reach — run both and the factory-side half of the purchase is complete before the deposit rather than after it.