Insights · Reference hub
Every SBKJ duct machine specification reference, gathered here. Each card links to a full catalog-accurate spec table — diameter or width, material gauge, power and weight — so you can shortlist a machine without hunting across product pages. Figures throughout come from the SBKJ Product Catalog 2026.
Spiral duct machine spec comparison — the SBTF round-duct tubeformers (SBTF-1500, 1500C, 1602, 2020): diameter range Φ80–Φ2500 mm, cutting method, galvanised/stainless/aluminium gauge, drive power and weight.
Auto duct line comparison — the SBAL-V, SBAL-III and SBAL-II rectangular TDF lines: integration level, line speed, power, gauge and weight, plus why line speed is not the same as finished output.
TDF flange machine specs — the four machines that make a TDF duct connection: flange former (SBTDF-12 / 1.5-16), folder (SBWS), cleat cutter and duct zipper (SBHF), with the 35 mm flange.
HVAC duct welder comparison — seam (SBFN series), stitch (SBSW-30-2Z), spot (SBDN-40), elbow, medium-frequency and handheld laser welders compared on thickness, KVA/kW capacity and weight.
Duct machine power & electrical requirements — connected power (kW) by model, 50 Hz vs 60 Hz export configuration, three-phase supply and how to size the breaker.
| Family | SBKJ models | Makes | Full spec reference |
|---|---|---|---|
| Spiral tubeformers | SBTF-1500 / 1500C / 1602 / 2020 | Round spiral duct Φ80–Φ2500 mm | Spiral comparison |
| Auto duct lines | SBAL-V / SBAL-III / SBAL-II | Rectangular TDF duct, ≤1500 mm wide | Auto line comparison |
| TDF flange machines | SBTDF, SBWS, SBHF | Integral 35 mm TDF flange connections | TDF flange specs |
| Duct welders | SBFN, SBSW, SBDN + MF/laser | Seam, stitch, spot & segment welds | Welder comparison |
| Power & site | All families | Electrical & supply planning | Power requirements |
All specifications are taken from the SBKJ Product Catalog 2026. For a quotation against your exact duct range, output and supply, talk to an engineer.
Get a machine recommendation in 12 hours →
On this page — it links every SBKJ duct machine spec reference: spiral tubeformers, automatic duct lines, TDF flange machines, duct welders and a power/electrical requirements reference. Each opens a full spec table from the SBKJ Product Catalog 2026.
Four core families plus support machines: spiral tubeformers (round duct Φ80–Φ2500 mm), automatic rectangular TDF duct lines, TDF flange-forming machines, and a range of duct welders (seam, stitch, spot, elbow, medium-frequency and laser).
Tell us your duct range, output and supply and an SBKJ mechanical engineer maps it to the right machine within 12 hours — not a salesperson.
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