How This Metal Trash Can Is Fabricated and Checked

A cylindrical steel bin is a rolling and welding job rather than a folding job. The whole product depends on one thing: whether the body stays round. If it does not, the lid will not close evenly and the base will not sit flat, and no amount of adjustment afterwards will put that right.

This page sets out how the body is made and checked at Fulei Metal, and where the material choice of 430 stainless is and is not the right answer.

The longitudinal seam is welded in a fixture, the same approach used for every cylindrical and frame assembly in our welding shop.

Revisions That Skip New Tooling on Metal Trash

The body is rolled and the parts are cut, so diameter, height and capacity are open. The items that involve purchased components are the ones to settle early.

Short Answers on Metal Trash

Why is the can specified in 430 stainless rather than 304?

430 is a ferritic stainless steel. It is magnetic, it costs less than 304, and it resists staining well enough for an indoor bin in a kitchen, bathroom or office. It is not as corrosion resistant as 304, so for a wet or heavily chlorinated environment the step up to 304 is worth taking. If a customer asks for a magnetic bin front for a label, 430 has that property and 304 does not – that is sometimes the deciding factor, and it is worth saying at quotation.

How is the body kept round?

Roundness is set at two points and then protected. It is set by the developed length cut into the blank and by the rolling setup, and it is protected by welding the seam in a fixture so the body cannot spring open or pinch closed while it is joined. What we do not do is roll a body, weld it freehand and then try to true it up – on 0.8 mm material that just moves the distortion around the circumference.

Is the soft-close mechanism made in-house?

No. The soft-close unit is a purchased mechanism and is matched to the weight of the lid and to the hinge point on the body. That matters for two reasons when you are specifying a new size. First, the mechanism has a working range, so a much heavier lid needs a different unit and may change the price. Second, the hinge geometry is a controlled dimension on our side: if the hinge point is wrong, the best mechanism available will still let the lid drop. Tell us the lid material and the closure you want and both are confirmed at sample stage.

Send the capacity you need in litres, whether the lid should be flat, domed or swing, and whether an inner liner is part of the scope. Diameter and height are the two numbers that set everything else. Send your specification for a quotation.

Bins are packed with the lid supported so the hinge is not loaded in transit; more on that in our export packaging notes.

SUS 430 Is a Deliberate Choice, and It Comes With a Boundary

A 12 litre stainless bin in 430 rather than 304 is a cost decision that works, provided the bin is used indoors. 430 is a ferritic stainless: it is magnetic, it costs less, and it resists the kind of mild indoor corrosion a kitchen bin actually sees. What it does not do well is resist chloride. A 430 bin used outdoors, or in a coastal kitchen, or cleaned with a bleach-based product regularly, will pit, and pitting looks like a material defect when it is really a specification one.

• Fingerprint-resistant finish is a coating or a surface treatment, and it is the reason this bin is specified that way. It is also the first thing to wear on the rim, where hands go.
• 0.8 mm is workable on a bin body because the rolled top edge and the folded base stiffen it. The body is not carrying much; the rim is carrying the handling.
• The lid is the part that gets touched and the part that gets slammed. It is where a bin looks worn first, and it is worth more attention than the body.

Where a Bin Actually Leaks and Smells

A metal bin with a lid has one job beyond holding the bag: keeping the smell in. That is a closure problem, not a steel problem. The lid has to sit on the rim evenly, which means the rim has to be level and the lid has to be stiff enough not to dish. A rolled rim helps both – it gives the lid a defined seat and it stiffens the top of the body at the same time, which is why a rolled top edge appears on almost every bin that works.

The second issue is the bottom. A bin body with a folded seam at the base will hold whatever leaks out of a bag, and that liquid sits in the fold. A sealed base, or a base with a drain path, is the difference between a bin that can be cleaned and one that gets replaced. Tell us whether this is a dry office bin or a kitchen bin that will see liquid, and the base detail and the grade both change. Lead time is quoted after drawing review and process confirmation.

Payment Terms

How a project is paid for is agreed before production starts, and the structure that applies to your order is stated on the quotation and on the order confirmation, so there is no ambiguity later.

• 30% advance payment with the order and the 70% balance before shipment — our standard structure.
• 70% advance payment with the order and the 30% balance before shipment — used for some projects.
• 100% payment in advance before production starts — used for some projects.

If your finance team works to a fixed structure, say so in the first enquiry and we will confirm what applies to your order before you commit. Request a quotation.

Questions buyers ask before sending drawings

The questions that come up most often before a project starts, answered the way we answer them by email.

What do you need from me to quote Metal Trash Can?

2D drawings as PDF, DWG or DXF, or 3D files as STEP, IGES or SolidWorks, together with material grade, sheet thickness, surface finish, quantity and destination country. If the drawing is not finished yet, send a photo, a sketch or the existing part instead — we review what can be measured from it and reply with the questions that still need answering.

How long does a quotation take?

Enquiries are answered within one business day. Simple laser-cut and bent parts are quoted within 24 hours. Welded frames, assembled units and multi-part structures are quoted after the drawing review and process confirmation, and the date is confirmed in our reply.

Is there a minimum order quantity?

Prototypes are made from a single piece and small batches of 10–50 pieces are routine. Prototype, first batch and repeat volume are quoted together so the numbers stay consistent as the project scales.

Can you work from a sample or a photo if I have no drawing?

Yes. Send the part itself, clear photographs with a rule or caliper in frame, or a dimensioned sketch. We measure what can be measured, list what is still undefined, and confirm it with you before production.

Send Your Drawings

Need a Similar Part?

Most enquiries that start on a page like this are not an order for Metal Trash Can — they are a search for a factory that can make something like it. Send us your drawing, 3D model or sample and we will review the manufacturing process and the quotation requirements, then come back with a process plan, a price and a lead time.

We work from 2D drawings, STEP / DWG / DXF / PDF files, or a physical sample if that is all you have.

Send Your Drawings

No complete drawings yet? Describe the part, send photos or a sketch, or send a sample — we can start from there. Discuss your project.

Trade Terms and Delivery

We quote under the standard Incoterms your logistics team already works with, and build the packing and documentation around the one you choose.

• EXW — you collect from our Ningbo facility and run export clearance through your own forwarder.
• FOB Ningbo — we deliver to the vessel at Ningbo port and handle export clearance.
• CIF — we cover carriage and insurance to your named destination port.
• DDP — we handle carriage, insurance, import clearance and duties through to your door.

Send your destination country, target delivery date and preferred trade term together with the drawing. Request a quotation.

Quotation Time

We quote from your drawings. How long that takes depends on what the part asks for:

• Simple parts — quoted within 24 hours. Laser-cut blanks and bent components, supplied with complete 2D or 3D drawings. Mon–Fri, GMT+8.
• Complex assemblies — quoted after the drawing review. Payment kiosks, multi-part welded frames, enclosures with purchased hardware, or anything needing a coating or assembly trial. We confirm a quotation date once the scope is clear.

Production lead time is quoted separately, after drawing review and process confirmation. Send your drawings.

What stands behind this quotation

• Manufacturing since 20162,500 m² Ningbo plant — 3 laser cutting machines (including newer TRUMPF), 4 CNC press brakes and 10 welding stations.
• Shipped to more than 30 export marketsEnclosures, cabinets and formed parts supplied to OEM buyers across Europe, North America and Asia.
• 123 documented product casesMedical device housings, HVAC and heat pump enclosures, agricultural and livestock equipment, industrial hydraulics, material handling trolleys and EV charging cabinets.
• Factory evidence you can checkTUV Rheinland audit reference MIC-ASI243729 and Bureau Veritas reference MIC-ASR263630 available for buyer review under NDA.

Before you send drawings: an NDA is signed on request · first-article inspection is carried out before a batch continues · pricing is staged from prototype quantity to repeat volume · pre-shipment photos and packing records are prepared when the project needs them.