Grate & Tube Components - Offer Best Magnetic Drum

Grate & tube components

Cleaner powder and granule lines

Magnetic tubes, grates, and easy-clean frames for hoppers, chutes, drawers, ducts, and gravity-fed lines.

Loose iron is not always a big bolt.
Sometimes it hides inside powder.
Tube position matters. Not just gauss.

Send material photos Request tube size advice

Powders
granules
flakes

Custom
tube
length

304 or 316
stainless

Manual or
easy-clean

Built around
your hopper

Stainless magnetic grate tubes below a powder hopper

Design the magnetic contact point.

What these components actually do

Material falls through tubesGravity brings powder into contact.

Iron sticks to tube surfaceThe field catches magnetic metal.

Clean material continues downFlow stays simple and compact.

Expert note: no magnet removes all metal. It removes magnetic metal.

Contamination	Can it be captured?	Notes
Iron powder	Yes	Common in powders.
Small screws	Yes	Machine parts.
Iron chips	Yes	Machining waste.
Wire pieces	Yes	From screens and mills.
Weak magnetic stainless	Sometimes	Grade and shape decide.
Aluminum	No	Non-magnetic.
Copper	No	Non-magnetic.
Plastic pieces	No	Needs another method.

Material condition	Better choice	Why
Free-flowing powder	Standard tubes or grate	Good contact and flow.
Plastic pellets	Round tubes or grate	Gentle flow. No hang-up.
Fine flour or starch	High-intensity tubes	Fine iron needs field strength.
Sticky powder	Easy-clean grate	It prevents build-up.
Large chunks	Double-row tubes	Better capture area.
Abrasive material	Thicker wall tubes	Longer service life.
Wet slurry	Not recommended	Magnet rods are not enough.
Deep material layer	Multi-layer grate	More contact depth.

If material does not touch the field, gauss is decoration.

Start with material flow

Ask one blunt question first: how does your material move?

Powder needs contact, not guesswork.
Sticky product needs easy cleaning.
Large pieces need wider gaps.

Main grate and tube options

Magnetic tubes

For custom frames, small hoppers, inspection points, and OEM equipment.

25mm, 32mm, or 50mm.
100-1200mm tube length.
304 or 316 stainless.
NdFeB or ferrite core.

Magnetic grates

For gravity-fed powder, pellets, granules, grain, plastic, and chemical material.

Round, square, or rectangle.
Single-row or double-row.
Multi-layer versions.
Heavy-duty frame options.

Easy clean magnetic grate with removable core

Easy-clean grates

For frequent cleaning, iron shifts, fine iron dust, and tight inspection routines.

Pull core, iron drops off.
Minimal disassembly.
Saves labor and time.
Food-grade available.

Where these components fit

Hopper outletPrimary capture after feeding.

Chute or drop housingProtect equipment below.

Drawer housingEasy cleaning access.

Before packagingFinal protection point.

Do not place the grate where material forms a dead pile.

Position	Typical use	What to check
Hopper outlet	Primary capture	Opening size and impact.
Chute drop	Protect equipment	Flow speed and impact.
Drawer housing	Easy cleaning	Drawer direction and space.
Duct or pipe	Pneumatic line	Airflow, pressure, mounting.
Silo outlet	Bulk discharge	Bridging risk and dead zone.
Extruder feed	Plastic or rubber	Heat and pressure.
Mixer inlet	Powder blending	Seal and cleaning frequency.
Packaging line	Final protection	Food-grade inspection access.

What we check before a model

Material name.
Particle size.
Capacity per hour.
Moisture level.
Temperature.
Opening size.
Cleaning frequency.
Target contamination.

One photo. One material. One opening size. Enough to start.

Technical options

Item	Standard options	Custom options	Notes
Tube diameter	25 / 32 / 50mm	Custom size	Choose by flow.
Tube length	100-1200mm	Custom length	Match opening depth.
Frame shape	Round / square	Custom shape	Fit your equipment.
Tube material	SUS304 / SUS316	SUS316L	Food or chemical use.
Magnet material	NdFeB / ferrite	SmCo	Higher heat stability.
Surface gauss	6000-14000G	12000G+	Typical range.
Working temp.	Up to 80°C	Up to 250°C	Depends on magnet.
Finish	Polished	Sanitary polish	Food-grade option.
Cleaning	Manual	Drawer or rotary	By cleaning frequency.
Seal	Standard	Food-grade seal	Powder lines.

If a supplier only talks about gauss, he skips half the job.

Where it works. Where it does not.

Suitable applications

Plastic pellets.
Food powder.
Grain and seed.
Chemical powder.
Ceramic powder.
Rubber granules.
Wood powder.

Not suitable

Aluminum separation.
Copper separation.
Large scrap sorting.
Wet slurry.
Sticky wet material.
Deep conveyor burden.
Plastic type sorting.

We will say no when a grate magnet is wrong.

Choose the cleaning method carefully

Manual tube

Best for:

Low cleaning frequency.

Weak point:

More labor.

Easy-clean grate

Best for:

Frequent cleaning.

Weak point:

Higher initial cost.

Drawer magnet

Best for:

Closed systems.

Weak point:

Needs room to pull.

Once per week: manual is fine.

Every shift: use easy-clean.

Every hour: manual is not economical.

Built around your opening

Round magnetic grate built for hopper opening

Tube diameter

Tube length

Tube spacing

Frame size

Frame shape

Flange position

Handle style

Food-grade polish

High-temp magnet

Engineering logic: too many tubes can block material. Too few tubes can miss iron. Correct design balances flow, capture, cleaning, and pressure drop.

Checked before shipment

Inspection before shipping magnetic grate

Tube surface condition.
Weld quality.
Frame flatness.
Tube spacing.
Surface gauss check.
Pull force spot check.
Dimension check.
Packaging protection.

For difficult powder, a small sample gives better answers.

Order details buyers care about

Item	Details
MOQ	1 piece.
Standard lead time	7-15 days for simple tubes.
Custom grate lead time	15-25 days.
Complex structure	25-35 days.
Packaging	Foam, carton, or wooden case.
Documents	Invoice, packing list, inspection photos.
Warranty	12 months.
Not covered	Misuse, impact, overheating, corrosion.
Support	Remote install and cleaning advice.

Tell us the temperature before ordering. Wrong heat condition can ruin the purchase.

Questions buyers ask before ordering

What is the difference between tube and grate?

A tube is one magnetic rod. A grate combines several rods in a frame.

Should I choose 304 or 316 stainless?

Use 304 for common dry material. Use 316 for corrosive or food lines.

Is higher gauss always better?

No. Contact distance, tube spacing, and flow depth matter more.

When do I need easy-clean design?

Use it when cleaning happens every shift or every hour.

Can this remove stainless steel?

Only some weak magnetic stainless can be captured.

Can you make it by my hopper size?

Yes. Send opening size, flange drawing, and material photos.

Can magnetic grates remove aluminum?

No. Aluminum needs eddy current separation, not grate magnets.

Can I use it for wet material?

Usually no. Wet slurry needs another separator structure.

What tube spacing should I choose?

Fine powder uses tighter spacing. Large chunks need wider spacing.

What should I send for a quote?

Material, capacity, opening size, temperature, contamination, and photos.

Send the material first.

Do not choose by gauss alone. Send us what runs on your line.

Material name

Particle size

Capacity per hour

Moisture level

Temperature

Opening size

Target metal problem

Upload photos or video

Send material photos Request custom grate design

We design the magnetic contact point.