11 min read
Bending and welding
→Seam welding for enclosures: where it seals and where it does not
Seam welding for enclosures: overlap width, heat input, distortion control and the leak test that proves a continuous weld seam actually seals.
Ganesh engineering library
Sheet metal, explained by the people who make it
377 guides on stamping, laser cutting, bending, welding, coating and the parts we build for lift, power, data centre, railway and farm equipment. Every article is reviewed by the engineering team before it is published.
- 377
- published guides
- 14
- topic hubs
- 3 Nov 2026
- last technical review
Browse by topic
Nine clusters, each mapped to a capability or product page.
32Stamping, presses and press toolsPressed, punched and deep drawn sheet metal parts, the tooling that makes them, and the DFM rules that decide whether a part suits a press at all.29Laser cutting and sheet metal fabricationFibre laser cutting, nesting, edge quality, tolerance and the cost drivers behind a cut part, including long panels cut on the 40 ft × 16 ft bed.38Bending, welding and finished assembliesPress brake bending, bend allowance, fixtures, robotic MIG welding, distortion control and the tolerances a finished welded assembly can actually hold.28Surface treatment and powder coatingSeven-tank pretreatment, phosphating, shot blasting, powder and wet paint selection, film thickness and the failure modes that show up two monsoons later.22Elevator and lift componentsCounterweight frames, car frames, slings, guide rail brackets, door panels and controller enclosures made to lift OEM drawings.24Genset, canopy and acoustic enclosuresDG set canopies, acoustic panels, louvres, base frames, skid bases and control panel enclosures, engineered for weather, access and noise.28Data centre racks and electrical enclosures19-inch rack frames, mounting rails, perforated doors, blanking panels, PDU brackets and the electrical enclosures around them.16Tractor, forklift and material handlingTractor panels and brackets, forklift overhead guards, counterweight covers, mast parts and material handling components built for vibration and abuse.16Railway, furniture and infrastructureRailway coach panels, underframe brackets, fittings, metal furniture frames, shelving and signage, where standards and traceability carry as much weight as the part.38Materials and gradesGrade selection for CRCA, stainless, aluminium, brass and copper: formability, thickness, corrosion and what the mill certificate actually guarantees.30Standards and complianceWhich standard applies, what it actually covers, and the evidence a buyer should ask for: ISO, IEC, EN, RDSO and material certification.44Design and CADDesign rules, CAD hand-off, bend allowances, tolerance stacks and the drawing notes that decide whether a part is made right first time.4Applications and casesApplication-led problems from lift shafts, genset sites, data halls, railway coaches, farms and warehouses, and how the part is designed around them.28Plant, quality and sustainabilityHow the plants run: quality systems, inspection, calibration, pretreatment chemistry, effluent, maintenance, energy and scrap.
All guides, page 33
Search the library →10 min read
Design and CAD
→Clinching for sheet metal: where it replaces a weld or a rivet
Clinching sheet metal: joint strength, thickness ratio, edge distance and the cases where a spot weld or a rivet is the better joint.
9 min read
Materials
→When brass is the wrong material for a part
Brass suits a narrow set of parts. Here are the failure modes, the cheaper substitutes and the stiffness and conductivity numbers behind the switch.
11 min read
Standards
→RDSO approval for railway components: scope and limits
RDSO approval attaches to an item, a drawing revision and a specification, not to a company. Here is what the route covers, where it stops, and what to file.
12 min read
Genset and canopies
→Genset canopy louvre panel manufacturing: route and limits
How a genset canopy louvre panel is formed, framed, welded and coated, with the blade pitch, overlap and free area numbers that size the airflow.
10 min read
Coating
→Powder colour consistency: design, failure modes and the fix
Colour drift on a powder line comes from batch, film build and cure, not the gun. How to hold ΔE 1.0 and what to put on the drawing.
10 min read
Materials
→Copper corrosion and finish compatibility
How copper behaves bare, powder coated or painted: patina rates, galvanic couples, oxide under the film, and the pretreatment the part needs before coating.
11 min read
Design and CAD
→Design for powder coating: drainage, Faraday and film build
Powder reaches what the gun can see and drains where gravity takes it. Depth-to-width limits, drain sizes and film builds for a part that coats right first time.
11 min read
Coating
→Powder coating aluminium parts: finish and adhesion
Alloy, temper, pretreatment, film build and cure temperature decide whether powder coating aluminium parts survives a monsoon or blisters in a year.
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