Answers to the questions we receive most often from purchasing and engineering teams.
What is the minimum order quantity?
For standard fin types we can produce from a few hundred metres; for special geometries the practical minimum is around 500 m. Send the quantity and we will confirm.
How long is delivery?
Typical lead time is 15–25 days for standard carbon steel tubes and 25–35 days for stainless or alloy products, plus shipping. Repeat orders are faster because the tooling is already set.
Can you produce to our drawing?
Yes. Most of our output is made to customer drawings. Send a PDF or DWG with the tube size, fin geometry, lengths and tolerances and we will confirm feasibility and price.
Do you supply test certificates?
Yes — EN 10204 3.1 mill certificates for base tube and fin strip, dimensional inspection reports, and hydrostatic or pneumatic test records. Third-party inspection can be arranged.
What is the maximum tube length?
Up to 12 m for most fin types, subject to transport. For very long bundles we supply in sections with match-marked joints.
How are the tubes packed for export?
Bundled, end-capped, wrapped in VCI film and packed in sea-worthy wooden cases with desiccant. We can also supply in containers loaded to your preferred pattern.
Do you offer coated fins?
Yes — epoxy, phenolic and hot-dip galvanised finishes. Coating must be specified before production because it changes the fin geometry slightly.
Can you help with selection?
Yes. Send the duty — fluid, temperatures, flow rates and environment — and our engineers will propose a fin type, geometry and material, free of charge.
Still have a question? Email us directly.
Tell us the tube diameter, fin height, fin pitch, materials and quantity — we reply with price and lead time within one working day.