Alignment
Alignment Is More Than Level.
Alignment study — schematic
Deviation 1.00 → correcting
Schematic illustration only — not a representation of a specific measurement method.
CENTERLINE
The reference the entire line is built around — and the one most often assumed rather than measured.
PASS LINE
The height the material travels at. A pass-line error changes how every stand loads the tube.
DATUM
Fixed references that make repeated measurement meaningful over time.
PARALLELISM
Stands that are square to the line but not to each other still introduce work into the material.
EQUIPMENT RELATIONSHIP
How forming, welding, sizing, and straightening sit relative to one another.
COMPOUNDING ERROR
Small geometric errors can compound as material moves through the line.
Measure the system. Understand the process. Correct the cause.
What gets evaluated
Geometry Across the Entire Process
- 01
Mill centerline
- 02
Pass-line relationships
- 03
Roll stands
- 04
Shafts
- 05
Forming sections
- 06
Weld sections
- 07
Sizing sections
- 08
Straighteners
- 09
Downstream equipment
Preliminary description. Specific methodology, tolerances, measurement technology, and certifications to be supplied by Scott. This page explains the concept of mill alignment; it does not describe a specific process, instrument, or tolerance.
Alignment
Think your mill's geometry has drifted?
Start with a conversation about what the line is doing and what has already been checked.