Technologies
Sheet metal fabrication processes refer to the manufacturing techniques used to cut, bend, form, join, and finish flat metal sheets and coils—typically ranging from 0.5 to 6 mm in thickness—into finis
Sheet metal fabrication processes refer to the manufacturing techniques used to cut, bend, form, join, and finish flat metal sheets and coils—typically ranging from 0.5 to 6 mm in thickness—into finished components for automotive, HVAC, construction, aerospace, and industrial equipment sectors. Thes
Sheet metal fabrication processes refer to the manufacturing techniques used to cut, bend, form, join, and finish flat metal sheets and coils—typically ranging from 0.5 to 6 mm in thickness—into finished components for automotive, HVAC, construction, aerospace, and industrial equipment sectors. These processes combine precision machinery with skilled setup to deliver tolerances as tight as ±0.1 mm and production lead times as short as 3–7 days.
Sheet metal fabrication encompasses six core processes, each suited to different part geometries, volumes, and material requirements:
Laser Cutting — A fibre laser beam thermally cuts complex profiles from sheet stock with minimal burring. Achieves ±0.1 mm positional tolerance on steel and aluminium up to 6 mm thick. No tooling cost; ideal for low-to-medium volumes and intricate geometry.
CNC Bending — A press brake applies force to fold sheet metal to a specified angle. Typical angle tolerance is ±0.5°. Suited for architectural panels, enclosures, and brackets in steel, stainless steel, and aluminium.
Welding & Assembly — TIG and MIG arc welding joins cut and bent components. Controls distortion to ±1.0 mm on formed assemblies. Used for structural frames, tanks, and load-bearing brackets in carbon and stainless steel.
Tube Fabrication & Rolling — Three-roll cold rolling forms flat sheet into cylindrical or conical tubes. Achieves ±1.5 mm radial tolerance. Common for ductwork, exhaust components, and structural columns.
Punching & Stamping — Hardened dies mechanically perforate or form repeating hole and slot patterns. Delivers ±0.2 mm positional accuracy. Cost-effective at volumes >500 units; requires dedicated tooling.
Surface Finishing — Powder coating, anodising, or manual polishing provides corrosion resistance and aesthetic finish. Applied post-fabrication to all metals. Turnaround is typically 2–3 days depending on coating type.
| Process | Method | Typical Tolerance | Best Materials | Relative Cost | Entag Capability |
|---|---|---|---|---|---|
| Laser Cutting | Fibre laser thermal cut | ±0.1 mm | Steel, SS, Al, Galv. | Medium | ✅ Yes |
| CNC Bending | Press brake forming | ±0.5° angle | Steel, SS, Al | Low–Medium | ✅ Yes |
| MIG/TIG Welding | Arc fusion joining | ±1.0 mm assembly | Steel, SS, Al | Medium–High | ✅ Yes |
| Tube Rolling | 3-roll cold forming | ±1.5 mm radius | Steel, SS | Medium | ✅ Yes |
| Punching/Stamping | Mechanical die press | ±0.2 mm | Steel, Al | Low (high vol.) | ❌ Refer out |
| Surface Finishing | Powder coat / polish | N/A | All metals | Low | ✅ Yes |
Material grades processed at Entag include S235/S355 mild steel, 304 and 316L stainless steel, 5052-H32 and 6061-T6 aluminium, and hot-dip galvanised steel. All work adheres to ISO 2768-m general tolerance standards. Laser cutting bed capacity is 3000 × 1500 mm; CNC press brakes handle bending lengths up to 2500 mm. Process selection depends on batch size, required tolerance, material type, and lead-time constraints. For example, laser cutting services Egypt suit one-off and small-batch prototypes, while sheet metal bending Egypt is ideal for architectural and enclosure work in tight angles.
Selecting the correct process requires evaluating four key factors:
Batch size — Punching and stamping are cost-effective at volumes >500 units due to tooling investment. Laser cutting and bending remain economical at 1–100 units.
Required tolerance — Laser cutting (±0.1 mm) suits precision assemblies. Bending (±0.5°) works for structural components. Welding (±1.0 mm) is acceptable for frames.
Material type — Stainless steel and aluminium require fibre lasers; carbon steel works with both laser and punch tools. Exotic alloys may require subcontracting.
Lead time — Laser cutting and bending typically start production within 48 hours. Welded assemblies need 5–7 days for tack-up, stress relief, and inspection.
Engineers in Cairo, Alexandria, Jeddah, Riyadh, and Dammam increasingly rely on on-demand fabrication platforms to compress lead times and avoid tooling fees. At Entag, you can upload a DXF or STEP file and receive a detailed quote—including material, labour, and finishing costs—within 24 hours. File formats accepted are DXF (preferred for 2D laser profiles), STEP and IGES (for 3D assemblies), and PDF drawings for reference.
What are the main types of sheet metal fabrication processes?
The six core processes are laser cutting (fibre laser thermal cut for complex profiles), CNC bending (press brake angle forming), welding and assembly (TIG/MIG arc joining), tube rolling (3-roll cylindrical forming), punching and stamping (mechanical die perforation), and surface finishing (powder coating or anodising). Each process serves distinct part geometries, volumes, and tolerance requirements across automotive, HVAC, and structural applications.
What tolerances can sheet metal laser cutting achieve?
Fibre laser cutting typically achieves ±0.1 mm positional tolerance on steel and aluminium sheet up to 6 mm thickness. ISO 2768-m governs general tolerances across sheet metal fabrication. For tolerances tighter than ±0.05 mm on critical features, secondary CNC machining or EDM finishing may be required. Material thickness, edge quality, and fixturing strategy all influence final accuracy.
What materials can be used in sheet metal fabrication?
Common materials include S235/S355 mild steel, 304 and 316L stainless steel, 5052-H32 and 6061-T6 aluminium alloys, and hot-dip galvanised steel up to 6 mm. Each material responds differently to laser cutting, bending, and welding. Stainless steel requires slower laser speeds and may exhibit slight edge discolouration. Aluminium demands attention to burr removal and anodising prep. Material selection depends on mechanical strength, corrosion environment, and forming method.
What is the difference between laser cutting and punching in sheet metal?
Laser cutting uses a focused fibre laser beam to thermally vaporise material for complex, burr-minimal profiles with ±0.1 mm accuracy and zero tooling cost. Punching uses hardened dies to mechanically shear repeating hole patterns—lower per-part cost at high volumes (>500 units) but requires tooling investment and longer setup time. Laser excels at one-offs and short runs; punching dominates high-volume production.
How long does sheet metal fabrication take in Egypt?
Lead times vary by process and complexity. At Entag, standard laser cutting and bending orders in Egypt receive a quote within 24 hours of CAD upload. Production typically begins within 48 hours. Total turnaround for simple cut-and-bend parts ranges from 3 to 5 business days; welded assemblies with stress relief may require 7 days. Rush expediting is available at a 20–30% surcharge.
Does Entag offer sheet metal fabrication services in Saudi Arabia?
Yes. Entag serves procurement teams in Jeddah, Riyadh, and Dammam. Upload your DXF or STEP file via the Entag platform and receive an itemised quote within 24 hours. Parts are fabricated in Egypt and shipped to your KSA location. No minimum order quantity; no tooling fees for laser and bending work. Typical shipping time is 5–10 business days depending on destination city and carrier.
What file formats are needed to quote sheet metal fabrication?
Entag accepts DXF (preferred for 2D laser-cut profiles), STEP and IGES (for 3D bent and welded assemblies), and PDF drawings for reference documentation. Providing both a dimensioned DXF and a PDF eliminates ambiguity and accelerates quoting. Material grade, thickness, and surface finish must be specified in the file properties or quoted notes. Missing specs delay quote generation by 24 hours.
What thickness of sheet metal can be laser cut?
Entag's fibre laser systems cut mild steel up to 12 mm, stainless steel up to 8 mm, and aluminium up to 6 mm with clean, burr-minimal edges. Material thinner than 0.8 mm requires careful fixturing to prevent thermal distortion and requires slower feed rates, increasing lead time by 1–2 days. Maximum sheet bed size is 3000 × 1500 mm. Nesting software minimises scrap.
Ready to start your project? Request a quote on Entag — upload your CAD file and get a price in 24 hours. No tooling fees. No minimum order. DXF, STEP, IGES, or PDF accepted. Whether you're in Cairo, Jeddah, or Riyadh, Entag delivers precision sheet metal components to spec on time. Contact us by WhatsApp or phone for expedited quotes on complex assemblies.
