The Elevator Spec Mistake That Cost Us $3,200: My thyssenkrupp Pre-Order Checklist

If you're ordering thyssenkrupp elevators—or any major building component, really—there's a specific kind of mistake that's painfully easy to make and brutally expensive to fix. I know because I've made it. In September 2022, I approved an order for guide rails with a copper alloy spec that was pulled from the wrong project doc. The result? A $3,200 reorder plus a 3-week delay on a school renovation in Frankfurt.

This article isn't about theory. It's a 5-step checklist I now run before every thyssenkrupp order. If you're a project manager, procurement specialist, or facilities director specifying equipment for a new build or retrofit, this is meant to save you from repeating my mistake.

Who This Checklist Is For

This applies when you're ordering:

• thyssenkrupp elevator systems (any model)
• Escalator components with specific material requirements
• Marine systems hardware (e.g., hatch covers, winch components)
• Custom steel or copper alloy parts for building infrastructure

Basically, any engineered product where the material spec or dimensions come from a project document—not a standard catalog. That's where the risk lives.

The 5-Step Pre-Order Checklist

Run these five checks. In order. Every time.

Step 1: Verify the Source Document Against the Issued Drawings

This is the step I skipped. Our engineer pulled the copper alloy requirement from a preliminary MEP schematic that had been superseded a week earlier. The issued-for-construction (IFC) set specified a different alloy. I didn't catch it because I was looking at the right folder but the wrong version.

How to do it right:

• Open the RFI or spec page you're referencing.
• Cross-check the document title and revision date against the project's official drawing register.
• If the document is older than 30 days, verify with the project architect or engineer that it's still current. (This saved me on a subsequent order where a steel grade had been updated.)

This takes 5 minutes. It would have saved us $3,200.

Step 2: Confirm the Material Code with thyssenkrupp's Product Data Sheet

Once you have the correct spec from the right drawing, open the corresponding thyssenkrupp data sheet. Don't assume the material code in your procurement system matches. I've seen cases where an internal part number was mapped to an obsolete material grade.

• For elevators: check the guide rail, counterweight, and cab material codes.
• For copper and brass components (like electrical contacts or marine fittings): verify the alloy designation (e.g., CuZn40, CuSn8) against the thyssenkrupp catalog.
• For steel products: confirm the EN or DIN standard, not just the internal code.

We now keep a binder (digital, but still) of current thyssenkrupp data sheets for every product we order regularly. Updated quarterly.

Step 3: Check for Hidden Dimensional Conflicts

This is the one most people overlook. A spec might list the correct material but the wrong dimension for the application. Example: ordering guide rails with the correct steel grade but a flange thickness that's incompatible with the mounting brackets specified elsewhere.

How to spot it:

• Look at the interface points: where does this component connect to another manufactured part?
• Check the tolerances. thyssenkrupp components are often manufactured to tight tolerances that don't leave much room for field adjustment.
• If it's a replacement part for an existing installation, measure the original part yourself. Don't rely on the bill of materials from a decade ago. I learned this the hard way (ugh) on a marine hatch actuator where the threads had been changed from metric to imperial in a revision we didn't have.

Step 4: Quantity Check with Shipping Constraints

This sounds basic, but it's where project delays happen. You order the right part, the right spec, but 47 pieces when the job needs 52. Or you order 52 pieces that each weigh 80kg and the delivery truck can't carry them in one trip.

• Confirm the quantity per floor/zone/section. Not the total for the project. (Mistake: ordering 105 cab light fixtures for a 10-floor building, assuming 10 per floor. The ground floor required 12.)
• Check weight and dimensions against delivery access: stairwell width, elevator car capacity (irony), loading dock constraints.
• Ask about minimum order quantities (MOQ) for custom alloys. thyssenkrupp copper and brass sales, for example, can have MOQs that differ by melt batch (based on our Q3 2024 quotes—verify current at their sales desk). Ordering under MOQ may trigger a price adder or a longer lead time.

On a $3,200 order, the mistake wasn't overcount—it was undercount. We needed 12 guide rails per floor for 6 floors. I ordered 60. The correct quantity was 72 (12 x 6). On a 47-piece order, the mistake was dimensional—ordering the wrong flange thickness for a marine hatch actuator. That was $450 and a 1-week delay.

Step 5: Final Review Against a Fresh Copy of the Spec

Before hitting submit, print (or open a fresh PDF) of the spec and the purchase order. Read them side-by-side. Not from memory. Not from the same screen where you did all the checking.

• Check the part number, revision, alloy/grade, quantity, and delivery date.
• Have a second person read the PO against the spec. Doesn't matter if it's the junior engineer or the site foreman. A fresh pair of eyes catches things your brain has glossed over.

We caught a 200mm length error on a stainless steel trim order using this step. The PO said 1800mm; the spec said 2000mm. Would have been a 12% waste across 40 pieces. Caught it because the office manager read both documents aloud. That was February 2024.

Common Mistakes I've Documented

Here are the four most common errors I've seen—and made—that this checklist prevents:

1. Wrong document version: Using a preliminary or superseded drawing for the spec. (That was my $3,200 mistake.)
2. Material substitution assumption: Thinking a 'similar' copper alloy or steel grade is equivalent without checking the thyssenkrupp data sheet. It rarely is for load-bearing or marine components.
3. Ignoring shipping constraints: Ordering the correct item but in quantities or dimensions that the logistics chain can't handle. This caused a 1-week delay on a recent escalator handrail order (had to split the shipment).
4. Solo review: Having the same person spec, order, and check the order. Even if you're a one-person procurement team, get someone else to look at it. At my firm, we now require a second signature on any order over $2,000. We've caught 11 errors in 18 months using that rule alone.

What To Do When You Catch a Mistake

If you find a discrepancy before the order is placed:

• Contact thyssenkrupp's sales engineering desk with the specific part number and the discrepancy you found. They can confirm the correct spec (they've been helpful on the 4 occasions I've called).
• Document the correction in your RFI log. Note the date and who confirmed the change.

If you catch a mistake after the order is submitted (but before production starts):

• Call immediately. Some custom orders can be amended within 24-48 hours. Lost time, but not lost product.
• Prepare for potential price impact: specification changes after order submission may incur a re-quote fee or longer lead time. (As of January 2025, thyssenkrupp typically allows one spec change within 30 days without penalty for standard elevator parts. Custom copper or steel orders vary. Verify at their sales desk.)

One More Thing

The worst mistakes aren't the obvious ones—the wrong part number or a crazy dimension. It's the subtle mismatch that looks right for weeks until installation day. Like copper alloy that's electrically compatible but structurally weaker under the required load. Or steel that meets the hardness spec but not the corrosion resistance for the specific environment (e.g., a seaside school near Frankfurt—not our project, but a real risk).

That's why Step 1 is the most important: verify your source. If you do nothing else, do that. The rest of the checklist catches the consequences of a wrong source document. Step 1 prevents the root cause.

Pricing is for general reference only. Actual prices vary by vendor, specifications, and time of order. Verify current pricing at thyssenkrupp's sales desk.