Screw flight

Cold-Rolled Continuous Screw Flight

Name: Cold-Rolled Continuous Screw Flight
Brand: SpiralFlights

Cold-rolled continuous screw flights for conveyors, mixers and augers. Share OD, ID, pitch, thickness, material and length for a custom quote.

Engineering fit

Built around the dimensions, material and production target that matter

Cold-formed strip flighting for applications that need continuous, seamless geometry and controlled pitch, diameter and thickness.

Use the stated range as a practical starting point. We confirm the final configuration against your drawing, material and operating conditions.

Discuss this product

Typical uses

Grain and feed handling
Screw conveyors and mixers
Mining and aggregates
Wastewater and sludge handling

Product data

Product Specifications

Parameter	Specification
Manufacturing method	Continuous cold rolling
MAX OD	800mm
MIN ID	20mm
Max Strip Width	150mm
Strip Thickness	2.0 mm to 8.0 mm
Materials	Mild steel and stainless steel
Construction	Continuous flight without a longitudinal weld

Size reference

Available Dimension Range

Typical sizes are shown below. Custom dimensions can be produced based on your drawing or requirements.

Parameter	Size	Size	Size	Size	Size	Size	Size	Size	Size	Size	Size	Size
OD (mm)	Ф94	Ф94	Ф120	Ф120	Ф125	Ф125	Ф140	Ф160	Ф200	Ф440	Ф500	Ф500
ID (mm)	Ф25	Ф25	Ф28	Ф40	Ф30	Ф30	Ф45	Ф40	Ф45	Ф300	Ф300	Ф320
Pitch (mm)	72	100	120	120	100	125	120	160	160	400	460	400
Thickness (mm)	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5
OD (mm)	Ф160	Ф160	Ф200	Ф200	Ф250	Ф250	Ф320	Ф320	Ф400	Ф400	Ф500	Ф500
ID (mm)	Ф42	Ф42	Ф48	Ф48	Ф60	Ф60	Ф76	Ф76	Ф108	Ф108	Ф133	Ф133
Pitch (mm)	120	160	160	200	200	250	250	320	320	400	400	500
Thickness (mm)	3.5	3.5	3.5	3.5	3.5	5	5	5	5	5	5	5
OD (mm)	Ф140	Ф140	Ф190	Ф190	Ф240	Ф240	Ф290	Ф290	Ф290	Ф290	Ф370	Ф370
ID (mm)	Ф60	Ф60	Ф60	Ф60	Ф60	Ф60	Ф89	Ф89	Ф114	Ф114	Ф114	Ф114
Pitch (mm)	112	150	133	200	166	250	200	290	200	300	300	380
Thickness (mm)	5	5	5	5	5	5	5	5	5	5	5	5

Workshop reference

Product and process views

Production approach

Flat strip is progressively formed at room temperature through dedicated rollers. The method preserves the mechanical properties of the material while creating a continuous helix without welded joints along the flight.

What to specify

Send the required outside diameter, inside diameter, pitch, thickness, material, hand, length and application. Standard examples in the available product material are a useful starting point, but final geometry should be confirmed against the drawing.

Where continuous flighting fits

This is a practical route for conveyor and mixing screws that benefit from a smooth, uninterrupted helix. Typical uses include bulk grain and feed handling, aggregates, sludge equipment and general process conveying. For sanitary or corrosion-sensitive duties, material selection is reviewed alongside the flight geometry.

When to choose this option

Cold-rolled flighting is considered when the project needs a continuous helix, repeatable pitch and a formed strip section across an agreed length. Sectional or mould-wound alternatives should be compared when diameter, thickness, edge profile, material behaviour or the joining plan falls outside the practical cold-rolling route.

Material and size considerations

Mild and stainless steels can behave differently during forming, so the exact grade and incoming strip condition matter alongside OD, ID, pitch and thickness. Include any corrosion, wear, hygiene, surface-finish or welding requirement rather than selecting material from the product name alone.

Sample ranges are not a limit

The listed combinations show established product examples, rather than a catalogue of fixed sizes. Engineering review checks the strip, shaft connection, material flow and fabrication requirements before confirming an order. This avoids selecting a diameter or pitch only because it appears in a reference table.

Quote checklist

OD, ID, pitch, thickness, hand and finished length
Material grade, surface requirement and operating environment
Quantity and whether the flight will be supplied loose or joined
Shaft or tube diameter, fit and planned welding details
Conveyed material, speed, temperature, corrosion and wear conditions
Drawing, sample photographs and required tolerances

Before quotation

Frequently asked questions

Use these answers as a starting point. Final geometry, material and equipment scope are confirmed from the project information.

What dimensions are needed for a cold-rolled screw flight quotation?

Send OD, ID, pitch, thickness, hand, finished length and material grade. Add quantity, shaft or tube details, application and a drawing or sample reference.

Is cold-rolled flighting supplied in fixed catalogue sizes?

The documented examples are a starting point rather than a complete fixed-size catalogue. Final geometry is checked against the strip section, material and approved drawing.

When should sectional flighting be considered instead?

Sectional flighting may be more practical for larger diameters, heavier plate, special root or rim features, difficult materials or projects that need individual segments for assembly.

Can stainless steel flighting be reviewed?

Stainless steel can be reviewed alongside mild steel. Exact grade, thickness, forming response, surface requirement and application must be confirmed before quotation.

How is the finished flight connected to a shaft or tube?

Show the shaft or tube diameter, fit, weld location and required assembly length. Supply can then be reviewed as loose flighting, prepared sections or part of a later assembly route.