---
url: https://qsteelcad.com/en/solutions/production-and-cam
language: en
alternate: https://qsteelcad.com/cozumler/uretim-ve-cam
updated: 2026-11-06
publisher: RENMAE Teknoloji ve Yazılım LTD. ŞTİ.
---

# Every profile on screen is a line the machine reads

QSteelCAD writes each profile with its length and operation positions, in millimetres from the profile start. The file passes an error check before it reaches the machine.

## How is the production file made?

BDE export on the OUTPUT tab turns the profiles in the model into lines the rollforming line reads: the whole project, or only walls, roof, trusses, headers or selected members. Each line holds the profile length and operation positions in millimetres.

1. **Choose the machine profile:** Rollform-80, 90, 140, 200 and 300 come ready. In each profile the H, F, N, S, S2 and S3 stations switch on or off individually.
2. **Review the operations:** Add holes and notches with assign by point or by ray; rivets, service holes, notches, flattening and swaging can each be shown in the view.
3. **Run the error check:** Together with minimum length, clashes and model audit. A warning only appears if the file to be written has an error.
4. **Export:** One .bde file and one CSV per section; operations the machine doesn't support are left out of the line.

A line from the reference file Kontrol_Uretim.bde shipped with the installer:

```
59iC07 RR 2584 h: 7 225 1445 2577 f: 229 1449 n: s: l: w: 30 2554
```

## Articles

- [How to choose light gauge steel software: 10 questions before you buy](https://qsteelcad.com/en/blog/how-to-choose-light-gauge-steel-software)
- [What is the difference between general CAD and light gauge steel software?](https://qsteelcad.com/en/blog/general-cad-vs-light-gauge-steel-software)
- [Turkey's light steel regulation takes effect on 1 January 2027: what changes?](https://qsteelcad.com/en/blog/turkey-light-steel-regulation-2027)
- [Bracing systems in light steel: a guide to X, K, V and sheathed panels](https://qsteelcad.com/en/blog/light-steel-bracing-systems-guide)
- [Galvanizing in light steel: 180 or 275 g/m² for each of the 81 provinces?](https://qsteelcad.com/en/blog/zinc-coating-by-province-turkey)
- [Light steel fabrication and erection checklist: how to use Table 10.1](https://qsteelcad.com/en/blog/fabrication-and-erection-checklist)
- [Light steel panel rules 2027: 0.9 mm studs, 625 mm spacing and bridging](https://qsteelcad.com/en/blog/light-steel-panel-rules-2027)
- [What is K-bracing? Compression, node and end bearing in profile bracing](https://qsteelcad.com/en/blog/what-is-k-bracing)
- [Light steel material rules 2027: 250 MPa, the DX grade ban and screw requirements](https://qsteelcad.com/en/blog/light-steel-material-rules-2027)
- [Gusset plates and strap end connections: how does force pass into the frame?](https://qsteelcad.com/en/blog/gusset-plates-and-strap-end-connections)
- [How doors, windows and services affect a braced panel](https://qsteelcad.com/en/blog/openings-services-and-braced-panels)
- [Strap tension and tensioners: why does slack bracing cause problems?](https://qsteelcad.com/en/blog/strap-tension-and-tensioners)
- [Why is saving bracing in CAD as a line between two points not enough?](https://qsteelcad.com/en/blog/modelling-bracing-in-cad)

## Terms

- [Rollforming](https://qsteelcad.com/en/glossary#rollforming): A production line where steel strip passes through successive rollers and takes the shape of a profile. Stations along the line punch holes, notch, flatten and finally cut the profile.
- [.bde file](https://qsteelcad.com/en/glossary#bde): The production file a rollforming line reads. Each line describes one profile: its name, length and operation positions. QSteelCAD writes one .bde and one CSV per section.
- [Machine profile](https://qsteelcad.com/en/glossary#machine-profile): The setting that defines which operations a rollforming line can perform. QSteelCAD ships with Rollform-80, 90, 140, 200 and 300; operations a profile doesn't support never reach the line.
- [Station](https://qsteelcad.com/en/glossary#station): A unit on a rollforming line that performs one operation. In QSteelCAD, stations H, F, N, S, S2 and S3 switch on or off per machine profile.
- [Notch](https://qsteelcad.com/en/glossary#notch): A cut in a profile's web or flange for a connection. Written in the n: field of a .bde line.
- [Flatten](https://qsteelcad.com/en/glossary#flatten): An area of a profile flattened for a connection. Written in the f: field of a .bde line.
- [Swage](https://qsteelcad.com/en/glossary#swage): An operation that narrows a profile's section. Written in the w: field of a .bde line.
- [Service hole](https://qsteelcad.com/en/glossary#service-hole): A small or large hole in a profile for services. Written in the s: and l: fields of a .bde line.

## Frequently asked

### What do the codes in the line mean?

h: rivet or screw hole, f: flattening, n: notch, s: and l: small and large service hole, w: swage. Positions are in millimetres from the profile start.

### Which rollforming machines does it work with?

The program writes production files for rollforming lines that read .bde lines. Let's check your machine's line format together in a meeting.

### How are rivet and screw counts produced?

The rivet / screw count on the CALCULATE tab counts positions without duplicates per profile; screws are twice the number of h: holes. The table pastes into Excel.