Roll Forming Machine RFQ Checklist: 18 Details Suppliers Need

Sending a vague inquiry like “Please quote price for your roof roll forming machine” is the fastest way to derail your machinery procurement. In response to ambiguous requests, machinery suppliers can only offer broad price ranges, assume lowest-cost specifications, or ignore the inquiry altogether.

In contrast, a structured, precise Request for Quotation (RFQ) immediately signals to manufacturers that you are a serious commercial buyer. It enables design engineers to calculate exact roll station counts, motor kilowatt ratings, and tooling metallurgy on the first pass—saving weeks of back-and-forth emails and eliminating costly misunderstandings.

To help you get fast, competitive, and technically binding proposals, this guide provides an 18-point RFQ checklist covering every essential detail machine builders need.

The 18 Essential RFQ Specifications

Category A: Profile Geometry & Final Application

1. Dimensioned 2D Profile Drawing (PDF / DWG / DXF): The single most critical document. Must show effective coverage width, overall width, rib heights, pitch spacing, and corner bend radiuses.
2. Finished Product Application: State where the profile will be used (e.g., residential roofing, structural warehouse framing, drywall partition, solar ground mount).
3. Target Profile Lengths: Minimum and maximum part lengths (e.g., 
   $1.0 meter$

   1.0 meter to 
   $12.0 meters$

   12.0 meters).

Category B: Raw Material Metallurgy & Coil Parameters

4. Substrate Material Type: Specify exact metal type: 
   $GI$

   GI (Galvanized), 
   $PPGI$

   PPGI (Prepainted GI), 
   $PPGL$

   PPGL (Galvalume), Stainless Steel, or Aluminum.

5. Sheet Thickness Range (
   $t$

   t): Provide minimum and maximum decimal thickness (e.g., 
   $0.35 mm$

   0.35 mm to 
   $0.70 mm$

   0.70 mm). Avoid using ambiguous gauge numbers.

6. Yield Strength & Tensile Strength: Specify material yield strength: commercial soft steel (
   $235–300 MPa$

   235–300 MPa) vs. structural high-strength steel (
   $550 MPa$

   550 MPa full hard). This directly dictates station count!

7. Coil Inner Diameter (ID) & Outer Diameter (OD): Standard inner eye is 
   $\Phi 508 mm$

   Φ508 mm (
   $20 inches$

   20 inches) with outer diameter up to 
   $\Phi 1,300 mm$

   Φ1,300 mm.

8. Maximum Coil Weight: State whether your plant processes 3-ton, 5-ton, or 10-ton coils.

Category C: Production Output & Automation Preferences

9. Target Operating Speed: State whether your business requires standard speed (
   $15–20 m/min$

   15–20 m/min) or high-speed flying cutoff (
   $30–50 m/min$

   30–50 m/min).

10. Target Shift Capacity: Estimated linear meters or metric tons per 8-hour shift.
11. Decoiler Type Preference: Manual expansion vs. hydraulic expansion with motorized rotation and coil loading car.
12. Cutoff System Preference: Standard stop-to-cut hydraulic shear vs. continuous servo-driven flying shear.
13. Discharge System: Standard gravity roller table (specify length: 3m or 6m) vs. automated pneumatic drop stacker.

Category D: Electrical, Hydraulic & Environmental Standards

14. Primary Workshop Power Supply: Exact 3-phase voltage, frequency, and wiring standard (e.g., 
    $380V$

    380V, 
    $50Hz$

    50Hz, 3-Phase or 
    $440V$

    440V, 
    $60Hz$

    60Hz, 3-Phase).

15. Preferred Electrical Component Brands: Specify preferred PLC and electrical brands (e.g., Siemens, Delta, Schneider, Mitsubishi) to ensure local spare parts availability.
16. Hydraulic Cooling Method: Standard air-cooled radiator vs. water chiller (essential for high-ambient tropical environments 
    $>40\circ C$

    >40∘C).

Category E: Commercial, Shipping & After-Sales Services

17. Incoterms & Destination Port: Specify target delivery terms: FOB China Port, CIF Destination Port, or DDP to your plant door.
18. Installation & Commissioning Scope: State whether you require on-site factory technician installation or will conduct remote commissioning via video link.

Turnkey RFQ Copy-Paste Template

Copy, complete, and send this structured template directly to equipment suppliers:

ROLL FORMING MACHINE RFQ SPECIFICATION SHEET
=============================================
1. Company Name & Country: [Your Company Name, Country]
2. Target Profile Name: [e.g., Trapezoidal Roof Sheet / C-Purlin]
3. Attached Drawing: [Attached PDF/DXF drawing with full dimensions]
4. Raw Material: [e.g., PPGI / Prepainted Galvanized Steel]
5. Yield Strength: [e.g., 280 MPa Soft / 550 MPa Full Hard]
6. Thickness Range: [e.g., Min 0.35 mm - Max 0.60 mm]
7. Coil Specifications: [Max Weight: 5 Tons | Coil ID: 508 mm | Coil OD: 1200 mm]
8. Desired Line Speed: [e.g., 18-20 m/min stop-cut / 35 m/min flying shear]
9. Uncoiler Type: [e.g., 5-Ton Hydraulic Expansion Decoiler]
10. Cut-Off Mechanism: [e.g., Post-shear hydraulic cutter with Cr12MoV blades]
11. Runout System: [e.g., 2 units of 3-meter gravity roller tables]
12. Factory Power Supply: [e.g., 380V / 50Hz / 3-Phase]
13. Preferred PLC Brand: [e.g., Delta Touchscreen or Siemens S7]
14. Hydraulic Cooling: [e.g., Air-cooled radiator]
15. Target Production Volume: [e.g., 5,000 meters per day]
16. Target Delivery Incoterm: [e.g., CIF Manzanillo / FOB Tianjin]
17. Installation Preference: [e.g., Video remote commissioning + full manuals]
18. Target Commissioning Date: [e.g., Q1 2027]

Review our advice on partnering with manufacturers in our guide on vetting cold roll forming machine manufacturers.

Frequently Asked Questions (FAQ)

Q1: Why is material yield strength so critical in an RFQ?

Because high-strength steel (
$G550$

G550) springs back significantly more than soft steel (
$Q235$

Q235). If you fail to state that you plan to run 
$G550$

G550 coil, the supplier will quote a 14-station machine designed for soft steel. When you run 
$G550$

G550 coil, the profile will fail to form properly or the machine will stall.

Q2: What is the typical lead time for a custom roll forming machine?

Standard roofing and purlin lines typically require 30 to 45 calendar days for engineering, CNC machining, assembly, and testing. Complex automated lines with flying shears and stackers require 60 to 75 days.

Q3: How many machines fit into a 40HQ ocean container?

A standard 40HQ container can accommodate either one large purlin/guardrail line, or two complete single-level roofing roll forming machines with their respective uncoilers and runout racks.

Q4: Can I request spare cutting blades and extra rollers in the RFQ?

Yes! It is best practice to include a spare wear-parts kit in your initial RFQ so the cost is included in your primary equipment financing.

Submit Your RFQ to Haixing Engineering

At Haixing Industry Group, we review customer RFQs within 24 business hours, providing detailed 2D flower designs, transparent pricing, and component brand disclosures.

Browse our complete equipment catalog or submit your completed RFQ form directly to our chief engineering team today.