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/.

How Does Sheet Metal Fabrication Work? A Step-by-Step Guide for Custom Sheet Metal Parts

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Sheet metal fabrication works by turning flat metal sheets into useful custom parts through a controlled manufacturing process. Simple idea, many moving parts. A bracket may need only cutting, bending and coating. A serious enclosure may need drawing review, laser cutting, CNC bending, welding, grinding, hardware, powder coating, assembly, inspection and packaging. Metal is honest. If one step is lazy, the next step complains.

Chinese MSTFAB engineers reviewing how sheet metal fabrication works from flat sheet to empty enclosure shell — Sheet metal fabrication works best when drawing review, material planning, cutting, bending, welding, finishing, inspection and packaging are controlled as one workflow.

If you are still defining the basics, start with our companion guide: What Is Sheet Metal Fabrication?. That article explains the definition. This page explains the workflow: what happens after a buyer sends drawings and asks, “Can you make this part without turning my timeline into soup?”

Short Answer: Flat Sheet Goes In, Controlled Parts Come Out

A practical custom sheet metal fabrication process usually follows this route: drawing review, DFM, material selection, quotation, material preparation, laser cutting, deburring, CNC bending, welding or riveting, hardware insertion, finishing, powder coating, assembly, inspection, packaging and shipment.

Engineering firstSTEP/PDF drawings, tolerances, materials, finish and quantity must be checked before any machine starts making expensive confetti.

Process controlLaser cutting, bending, welding and finishing must match the same drawing revision, not four different opinions.

Buyer risk reductionInspection and packaging are not afterthoughts. A perfect part damaged in transit is just a very well-traveled problem.

How the Sheet Metal Fabrication Process Works

Customer sends drawings and requirements. A good RFQ includes STEP/STP, 2D PDF, DXF or DWG files, material, thickness, tolerances, finish, hardware, quantity and packaging notes. For a cleaner RFQ package, use our sheet metal fabrication drawing requirements checklist and the guide to sheet metal fabrication from STEP files.

Scope is confirmed before quotation. One quote may include only cutting and bending. Another may include welding, powder coating, hardware, assembly, inspection and export packing. Missing scope is not savings. It is cost hiding behind a curtain. See how to prepare a custom sheet metal fabrication quote.

DFM review finds trouble early. DFM checks bend radius, hole-to-bend distance, flange length, welding distortion, coating clearance, hardware feasibility and assembly fit. A problem found before production is a drawing update. A problem found after coating is a meeting. Usually not a fun one. Read more about DFM for sheet metal fabrication and design for manufacturability.

Material is selected and prepared. Mild steel, SPCC, galvanized steel, stainless steel and aluminum all behave differently during cutting, bending, welding and finishing. Material choice affects cost, corrosion resistance, forming and packaging risk.

Laser cutting creates the flat blanks. Profiles, holes, slots, vents and cable entries are cut from sheet material. A hole is not free; every hole adds machine time. For cut quality and repeatability, see MSTFAB’s laser cutting services.

Deburring makes edges safer and cleaner. Sharp edges can damage cables, hands, coatings and buyer confidence. Edge treatment matters for electrical enclosures, medical housings, machine guards and operator-facing panels.

CNC bending turns flat blanks into 3D parts. Bend angle, springback, tooling access and bend sequence decide whether holes line up and doors close properly. Good bending looks boring. Engineers love boring when boring means repeatable. Learn more from our sheet metal bending services page.

Welding, riveting or hardware joining builds assemblies. TIG, MIG, spot welding, rivets, PEM nuts, studs and fasteners turn panels into structures. Welding adds heat, and heat moves metal. That is physics sending an invoice. Review MSTFAB’s welding services and sheet metal welding and finishing services.

Surface finishing protects and improves appearance. Powder coating, brushing, polishing, passivation, plating and anodizing affect corrosion resistance, fit and cosmetic quality. Powder coating is not just color; it changes clearances. For finish control, see surface treatment services and sheet metal fabrication with powder coating.

Assembly, inspection and packaging finish the job. Hinges, locks, handles, grounding studs, mounting plates and fasteners may be installed before final inspection. Export packaging protects the part so the buyer receives metal parts, not metal regrets. See our sheet metal fabrication and assembly services.

Chinese MSTFAB operator inspecting laser cut sheet metal panels holes vents and bracket profiles during fabrication — Laser cutting creates the flat blanks, holes, slots, ventilation openings and cable-entry profiles that later need to bend and assemble correctly.

Chinese MSTFAB operator CNC bending sheet metal enclosure covers chassis shells and flanges — CNC bending turns flat blanks into repeatable 3D shells, covers and brackets, where bend angle and flange control decide whether the part fits.

Why DFM Matters Before the First Sheet Is Cut

CAD has no burrs. CAD has no springback. CAD has no welding distortion. CAD has no powder coating thickness. Real production has all of them, plus deadlines. That is why a serious supplier reviews manufacturability before production starts.

DFM is especially important for custom sheet metal enclosure fabrication, electrical enclosures, machine covers, brackets, mounting plates and welded assemblies. It helps confirm which features are critical and which tolerances are accidentally expensive.

Chinese MSTFAB worker fixture welding empty sheet metal enclosure chassis and installing hardware inserts — Fixture welding and hardware insertion help control squareness, assembly fit and mounting details for empty sheet metal shells and chassis.

Trust Table: What Buyers Should Expect From a Fabrication Partner

Buyer concern	What MSTFAB checks	Why it matters
Quote accuracy	Drawing revision, material, thickness, tolerance, finish, hardware, quantity and packaging scope	A low quote with missing scope becomes a surprise invoice later.
Manufacturability	Bend radius, flange length, hole-to-bend distance, welding access, coating clearance and assembly fit	Fixing a drawing is cheaper than fixing finished parts.
Dimensional repeatability	Laser cutting programs, bend sequence, fixtures, first article checks and critical dimensions	The 200th part should still fit like the approved sample.
Cosmetic finish	Visible surfaces, grinding standard, powder coating texture, RAL color, masking and packing protection	A part can be dimensionally correct and still look unacceptable.
Export risk	Labels, layer protection, foam, cartons, pallets, crates and packing photos where needed	International shipping is not gentle. Packaging must be part of the process.

Prototype Fabrication vs Batch Production

Prototype fabrication tests the design. It answers questions like: does the part fit, do the bends work, does the door close, does hardware install, does coating affect clearance, and can the part move to production without heroics?

Batch production tests repeatability. The goal is not to make one impressive sample and then pray. The goal is stable process control, approved drawings, consistent inspection and packaging standards. If you are moving from sample to production, this prototype design review guide is useful.

What Usually Delays Sheet Metal Fabrication?

Most delays are not dramatic. They are small missing details that quietly steal days: no material grade, no sheet thickness, missing quantity, unclear surface finish, no hardware model, missing RAL color, no masking note, conflicting drawing revisions, unrealistic tolerances, or a STEP file that disagrees with the PDF drawing.

If your RFQ says “same as last time” but nobody can find last time, the project is already doing cardio.

Cost also changes with material, thickness, cutting length, hole count, bends, welding, finishing, inspection and packing. For budgeting, read How Much Does Sheet Metal Fabrication Cost?, the practical sheet metal fabrication cost factors guide, and how to reduce sheet metal fabrication cost without damaging quality.

Chinese MSTFAB inspector measuring powder coated sheet metal panels and preparing fabricated parts for export packaging — Inspection and export packaging protect dimensional quality, cosmetic surfaces and shipment safety before custom sheet metal parts leave the factory.

What Should You Send Before Fabrication Starts?

3D STEP/STP file and 2D PDF drawing
DXF or DWG file if flat cutting geometry is available
Assembly drawing and BOM for multi-part projects
Material grade, sheet thickness and quantity
Critical dimensions and tolerance requirements
Bending, welding, hardware and finish notes
Powder coating color, gloss, texture and masking areas
Prototype quantity, batch quantity and target lead time
Packaging requirements and shipping destination if freight is needed

Good fabrication starts before the machine starts. The cleaner the drawing package, the faster the supplier can review risk, quote accurately and plan production. That is not glamorous. It is just how metal stays civilized.

Related MSTFAB Guides for the Same Buyer Journey

FAQ: How Sheet Metal Fabrication Works

What is the first step in sheet metal fabrication?

The first step is drawing review. The supplier checks STEP files, PDF drawings, material, thickness, tolerances, finish, quantity and manufacturing requirements before quoting or production.

What processes are used in sheet metal fabrication?

Common processes include laser cutting, CNC bending, deburring, welding, riveting, PEM hardware insertion, powder coating, surface finishing, mechanical assembly, inspection and packaging.

Why is DFM review important?

DFM review helps identify issues such as holes too close to bends, short flanges, welding distortion, coating clearance problems and assembly interference before production starts.

Does sheet metal fabrication include powder coating?

It can. Powder coating is commonly used for steel enclosures, cabinets, covers, guards and OEM parts. Buyers should specify color, texture, gloss, masking areas, grounding points and packaging protection.

Can MSTFAB review how my sheet metal part will be manufactured?

Yes. MSTFAB can review STEP/PDF drawings and explain the likely fabrication process, including cutting, bending, welding, finishing, assembly, inspection and packaging for custom sheet metal parts.

Ready to turn a drawing into real sheet metal parts?

Send MSTFAB your STEP, PDF, DXF or DWG files. We will review material, thickness, fabrication process, DFM risks, finish, inspection and packaging scope before preparing a practical quote.

Upload Drawing / Request Quote

Related MSTFAB core service sheet metal welding services

MSTFAB provides TIG and MIG sheet metal welding services for structural assemblies, cabinets, frames and OEM metal components.