What does MSTFAB manufacture?

MSTFAB is the international brand of Guangzhou Maisituo Sheet Metal Manufacturing Co., Ltd. It makes drawing-defined sheet metal parts and empty mechanical enclosure shells for OEM buyers, using laser cutting, CNC bending, welding and mechanical assembly. Surface treatments such as powder coating may be coordinated with external partners depending on the order.

Which materials does MSTFAB work with?

Common options include carbon steel, galvanized steel, stainless steel and aluminum. Grade, thickness, dimensions, critical tolerances, hardware, finish and inspection criteria are specified per project on the approved drawing.

What are the MOQ and lead time for custom sheet metal parts?

There is no single MOQ or lead time that applies to every part. MOQ, price, achievable tolerances, lead time, finishing route and inspection deliverables are confirmed in the project quotation and purchase order after the drawing is reviewed.

Does MSTFAB supply electrical components or certified finished equipment?

No. The normal supply scope is fabricated metalwork and empty mechanical housings. Electrical components, wiring, software, system integration and final equipment certification remain with the buyer unless a written quotation or contract explicitly includes them.

How do I request a quote?

Send STEP, STP, DXF, DWG or PDF files with the drawing revision, material and thickness, quantity, critical dimensions, hardware, finish, inspection needs and delivery destination through the RFQ page at https://mstfab.com/contact/.

Sheet Metal Fabrication Capability Checklist for OEM Buyers

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CAPABILITY VERIFICATION

A sheet metal fabrication capability statement is useful only when it connects equipment and processes to your material, geometry, quantity, tolerances, finish and inspection plan. A machine list answers what is present; a capability review answers whether the proposed route fits the part.

Material specification reviewed before sheet metal fabrication — Material family, grade, thickness and evidence requirements should be confirmed for the actual order.

Start With the Part, Then Map the Process

Part requirement	Capability question	Evidence
Material and thickness	Can the specified grade and form be sourced and processed?	Quote baseline, identification and document route
Cut geometry	Are edge condition, hole size and downstream bends compatible?	DFM notes and sample inspection
Formed geometry	Are bend access, tooling, springback and sequence understood?	Forming plan and first-article dimensions
Welded assembly	How are datums, fixtures, sequence and distortion controlled?	Approved route and post-weld checks
Hardware	Are part numbers, access and installation checks defined?	BOM and fit verification
Finish	Who controls pretreatment, masking, appearance and rework?	Approved route, sample and inspection record

Material Capability Is More Than a List of Alloys

Confirm exact grade, product form, thickness, surface condition, temper where relevant, substitution rules and evidence. Availability changes by quantity and market, so the approved quotation and purchase specification should control the order rather than a permanent website list.

Carbon steel

Review grade, thickness, forming, weld route, pretreatment and final corrosion protection.

Galvanized steel

Define base steel, coating designation, cut-edge treatment, welding effects and finish compatibility.

Stainless steel

Specify grade, finish, grain direction, contamination control and weld appearance requirements.

Aluminum

Specify alloy, temper, thickness, bend behavior, joining and cosmetic-surface protection.

Do Not Ask for One Universal Tolerance

Achievable variation depends on feature type, size, material, thickness, datum strategy, number of bends, welding, finishing, measuring method and production quantity. Put functional limits on the drawing and identify critical features. Let noncritical geometry use an agreed general tolerance only where it is appropriate.

Formed sheet metal part measured from a drawing-defined datum — Measure critical formed features from the functional datum after the processes that can move them.

Verify Finish and External Processes

Powder coating, wet paint, plating, passivation and specialist testing may involve approved external partners. The buyer should know the route, specification, masking, acceptance evidence and ownership. Outsourcing is not the failure; an uncontrolled handoff is.

Buyer Trust Table

Capability claim	Evidence to request	What it proves
“Precision fabrication”	Part-specific CTQs, process route and sample report	How precision is defined for this drawing
“All materials”	Exact grade, thickness and supply confirmation	The quoted material is available and controlled
“Full-service finishing”	Route, responsible supplier, masking and acceptance	The handoff is visible
“Assembly ready”	Hardware, interface, fit and packing checks	The fabricated scope supports integration

Capability Review Checklist

Material grade and thickness confirmed
Each critical feature mapped to a process
Bend and weld risks reviewed
Hardware BOM and access checked
Finish route and masks defined
External processes and owners visible
FAI and measuring methods agreed
Repeat-order controls documented
Packing protects surfaces and geometry
Open assumptions listed in the quote

Frequently Asked Questions

Does owning a laser prove a supplier can make my part?

No. Equipment is one input. The supplier must still show a suitable process route, engineering review, inspection method and production control for the drawing.

What tolerance can sheet metal fabrication hold?

There is no honest universal answer. It depends on the feature, material, geometry, process sequence and measurement method. Put functional requirements on the drawing and review them before quotation.

Can external finishing be acceptable?

Yes, when the approved route, specification, supplier control, incoming verification and responsibility are clear.

Match the Capability Review to the Drawing

Guangzhou Maisituo Sheet Metal Manufacturing Co., Ltd., operating as MSTFAB, provides drawing-based sheet metal fabrication. Send the files, material, finish, quantity and CTQs for a route review.

Request a Capability Review