What Information a Manufacturer Needs Before Quoting a Roll Forming Profile

Learn about what information a manufacturer needs before quoting a roll forming profile in roll forming machines. Profile Guide guide covering technical

Complete Profile Specification & Machine Quotation Guide

A roll forming manufacturer cannot provide an accurate quote based on:

“Trapezoidal sheet 1000 mm.”

That is incomplete.

Before quoting a profile or machine, a manufacturer needs:

✔ Exact profile geometry
✔ Material specification
✔ Thickness range
✔ Steel grade
✔ Coating type
✔ Tolerance requirements
✔ Production speed target
✔ Installation country

Without this information:

Quotes are guesses.

And guesses lead to:

Wrong machine design
Incorrect coil width
Underpowered motors
Structural failure
Warranty disputes

Accurate quoting begins with accurate specification.

1️⃣ Profile Drawing (Non-Negotiable)

The most important requirement:

A full profile drawing.

Must include:

✔ Effective cover width
✔ Overall width
✔ Rib height
✔ Rib pitch
✔ Bend angles
✔ Return legs
✔ Lap details
✔ Tolerances

Without a drawing:

Developed width cannot be calculated correctly.

Every millimeter matters.

2️⃣ Effective Cover Width vs Overall Width

Manufacturers must know:

Effective cover (after overlap).

Example:

1000 mm effective cover may require 1200–1300 mm coil.

Confusing overall width with cover width causes:

Incorrect coil width calculation.

3️⃣ Thickness Range (Gauge)

Specify:

Minimum thickness
Maximum thickness

Example:

0.4–0.6 mm range.

This affects:

✔ Shaft diameter
✔ Motor power
✔ Frame strength
✔ Number of forming stations
✔ Roll gap adjustment

Multi-gauge machines cost more.

4️⃣ Steel Grade (Yield Strength)

Specify:

G250, G350, G550
Or
S350GD, S450GD

Higher yield strength:

Requires stronger forming force.

Machine must be engineered for grade.

5️⃣ Coating Type

Specify:

✔ Galvanized (Z275, G90, etc.)
✔ Al-Zn (AZ150)
✔ Prepainted
✔ Aluminum

Coating affects:

✔ Roll surface finish
✔ Cutting method
✔ Corrosion compatibility
✔ Price

Painted coil requires polished rollers.

6️⃣ Intended Application

Is this for:

✔ Industrial warehouse
✔ Residential roofing
✔ Agricultural buildings
✔ Structural deck
✔ Solar-ready roofing

Application determines:

Load requirements
Rib height suitability
Thickness requirement

7️⃣ Target Market / Country

Country matters because:

Wind load differs
Snow load differs
Fire codes differ
Corrosion class differs
Electrical power differs

Machine must match:

Local standards + voltage.

8️⃣ Production Speed Target

Example:

15 m/min
25 m/min
40 m/min

Higher speed requires:

✔ Servo control
✔ Flying shear
✔ Stronger drive system
✔ Improved lubrication

Speed dramatically affects price.

9️⃣ Cutting Type

Options:

✔ Hydraulic stop cut
✔ Flying shear
✔ Rotary cut

Cutting type affects:

Production rate
Panel accuracy
Machine complexity

Manufacturer must know this before quoting.

🔟 Coil Specifications

Provide:

✔ Coil width
✔ Coil weight
✔ Coil ID (e.g., 508 mm or 610 mm)
✔ Maximum coil outer diameter

This affects:

Uncoiler capacity
Line layout
Floor space requirement

1️⃣1️⃣ Tolerance Requirements

Specify if you require:

✔ Tight dimensional tolerance
✔ High architectural finish
✔ Solar-compatible seam precision

High precision increases:

Tooling cost
Machine complexity

1️⃣2️⃣ Optional Equipment

Do you need:

✔ Auto stacker
✔ Coil car
✔ Decoiler upgrade
✔ Embossing unit
✔ Punching station
✔ Perforation system

Optional equipment affects total quotation.

1️⃣3️⃣ Electrical Power Supply

Specify:

✔ Voltage
✔ Phase
✔ Frequency (50Hz or 60Hz)

Incorrect electrical specification delays installation.

1️⃣4️⃣ Space & Layout Constraints

Provide:

✔ Available factory space
✔ Maximum line length
✔ Loading orientation

Line layout affects:

Machine configuration.

1️⃣5️⃣ Budget Range

Honest budget range helps:

Avoid over-specification
Avoid under-powered system

Transparent communication speeds quoting.

1️⃣6️⃣ Common Buyer Mistakes

❌ Sending only photo of profile
❌ Not specifying thickness
❌ Not confirming steel grade
❌ Not clarifying market country
❌ Requesting price before providing drawing

Without full information, price cannot be accurate.

1️⃣7️⃣ Manufacturer Quotation Checklist

Before requesting a quote, provide:

✔ Profile drawing (PDF/DWG)
✔ Effective cover width
✔ Thickness range
✔ Steel grade
✔ Coating type
✔ Application type
✔ Country of installation
✔ Target production speed
✔ Cutting type
✔ Coil specs
✔ Electrical supply

Complete information = accurate quote.

1️⃣8️⃣ Engineering Summary

A roll forming machine quote depends on:

✔ Geometry
✔ Thickness
✔ Grade
✔ Coating
✔ Speed
✔ Application
✔ Country
✔ Optional systems

Missing any of these leads to:

Wrong pricing
Incorrect machine design
Future performance issues

Quoting is engineering — not guesswork.

FAQ Section

Can I get a quote without a drawing?

Not accurately.

Why does steel grade matter for pricing?

Higher grade requires stronger machine and tooling.

Does thickness range affect cost?

Yes — multi-gauge machines are more expensive.

Why does country matter?

Load requirements and electrical standards differ.

Is coil width important?

Yes — it determines machine capacity.

What is the most important document to send?

The profile drawing.