Extrusion Line Quotation Checklist: Compare Scope Before Price

An extrusion line quotation is only useful when you know exactly what is included. Two suppliers may both say they are quoting a complete plastic extrusion line, but one may include die tooling, calibration, line control, commissioning, spare parts and training while another quotes only the main machine and downstream stations.

That is why the lowest price is often not the lowest real cost. It may simply be the narrowest scope. Before negotiating the number, compare the supply boundary.

Use this checklist to normalize quotations before you choose a supplier. For the equipment context, see plastic extrusion line categories. For control scope, see extrusion line control system. For downstream stations, see downstream equipment in plastic extrusion.

If the product could be a molded part rather than a continuous extrusion, check injection molding vs extrusion before asking suppliers to quote an extrusion line.

Quick Answer

Compare extrusion line quotations by scope first, then price:

1. List every item the production line needs.
2. Ask each supplier to mark each item as Included, Not Included, Optional or By Buyer.
3. Confirm die sets, calibration tooling, downstream stations and control integration.
4. Add utilities, shipping, customs, commissioning, training and facility work.
5. Compare the true landed cost, not only the headline machine price.

1. What a Complete Extrusion Line Includes

A complete extrusion line is a process system, not one machine. It normally includes the main extruder, die and tooling, downstream equipment, control integration and end-of-line handling.

For synchronization scope, check whether the quotation covers the relationship between extruder output and haul-off speed. CT-B2 explains extruder output and haul-off speed synchronization.

2. Common Exclusions That Change the Real Price

Many disputes start with the sentence: “We thought that was included.” Make exclusions visible before you issue the purchase order.

For hygroscopic materials, a dryer may be essential even if it is not in the line price. EB-2 explains resin drying in plastic extrusion.

3. Normalize Every Supplier Response

Ask every supplier to complete the same response format:

This removes the guessing. If Supplier A includes a chiller and Supplier B lists it as optional, the headline price is not comparable until you add the missing cost.

4. Calculate True Landed Cost

The real comparison is the total cost to install, commission and run the line in your factory.

Example:

The apparent $12,000 difference becomes $3,600 once scope is normalized.

5. “Included” Still Needs Specification

Scope alignment is not the end. Two quotations can both say “included” while using different component levels.

A brand name alone is not enough. Ask for model numbers where the component affects process stability, service or long-term reliability.

6. What to Put in the RFQ

A better RFQ creates better quotations. Do not ask only for “one pipe extrusion line” or “one profile line.” Send the process basis first.

For pipe size and tooling coverage, see pipe extrusion line size range.

7. Scope of Supply Checklist

Use this checklist when comparing quotations. Mark each item as Included, Not Included, Optional or By Buyer.

A. Product and Process Basis

• Product type, drawing or sample
• Material and recycled content
• Layer structure if multi-layer
• Output target in kg/h
• Line speed target in m/min
• Dimensional tolerance
• Surface quality requirement

B. Main Equipment

• Extruder body, screw, barrel, gearbox and motor
• Inverter / drive system
• Control cabinet with PLC and HMI
• Barrel heaters and cooling fans
• Hopper and feed throat
• Safety guarding and E-stop circuits
• Screen changer, if required
• Melt pump, if required

C. Die and Tooling

• Die type and quantity
• Product sizes covered by each die set
• Die adapter or transition piece
• Calibration sleeves, inserts or sizing tooling
• Tooling drawings and material

D. Downstream Equipment

• Vacuum or dry calibration unit
• Cooling bath or spray tank
• Haul-off / puller
• Cutter type
• Coiler, winder, stacker or receiving table
• End-of-line handling

E. Upstream and Material Handling

• Loader or vacuum conveyor
• Dryer type and capacity
• Dosing or gravimetric blending
• Material storage and conveying interface

F. Auxiliary Equipment

• Chiller or cooling tower
• Compressor or compressed-air connection
• Water piping and drainage
• Main power cable
• Inline measurement
• Printer or marking system

G. Delivery and Services

• FAT and trial material
• Packing type
• Shipping term and insurance
• Installation supervision days
• Commissioning and test run
• Operator and maintenance training
• Startup spare parts and tool kit

H. Documentation

• Mechanical drawings
• Electrical schematics
• Operating manual language
• Recommended spare parts list with part numbers
• Parameter backup and PLC/HMI documentation if available

I. Commercial Boundary

• Warranty period and start point
• Utility hookup responsibility
• Local installation and civil works
• Explicit exclusions
• Special assumptions

Conclusion

A good extrusion line quotation is not the cheapest number on the first page. It is the clearest scope, the cleanest RFQ response and the lowest real risk after every included, excluded, optional and buyer-supplied item is visible.

Compare scope first, then price. That is how you avoid buying a “complete line” that still needs expensive missing pieces before it can produce.

FAQ

Why do extrusion line quotations vary so much?

Usually because the scope is different. One supplier may include tooling, chiller, dryer, commissioning and spare parts, while another quotes only the core line.

What is most often missing from a quotation?

Chiller, compressor, dryer, loader, extra die sets, calibration tooling, spare parts, installation supervision, training and shipping-related costs are common gaps.

Should I choose the supplier with the most complete scope?

Not automatically. A complete scope reduces risk, but you still need to compare component specifications, service support and whether each included item matches your product.

How many die sets should I include?

At minimum, include the die and calibration tooling needed for the product sizes you will actually sell or test after installation.

What does commissioning included mean?

It should state engineer days, work content, test material, buyer responsibilities, and who pays flights, hotel, visa and local transport.

Is extrusion line price the same as true landed cost?

No. True landed cost includes the quoted line, missing equipment, logistics, customs, commissioning, training and facility preparation.

For installation, commissioning and support boundaries, see Jinxin service support.

Need a Quotation Checklist Review?

Send your product drawing, material, size range, output target, tolerance, factory utilities and any quotation you have received. We can help identify missing scope before you compare suppliers.

Written by

Jason Shen

Founder and Lead Engineer, Jinxin Extruder

Jason Shen leads Jinxin Extruder's single screw extrusion line projects, with hands-on experience in machine configuration, tooling adjustment, factory testing and extrusion troubleshooting.