CDS Line Tubes are a high-quality seamless cold drawn precision tube purpose-built for hydraulic and pneumatic applications. Manufactured to E235 (ST37.4) grade and normalised to improve suitability for bending, this is your go to tube that bends cleanly, seals properly and holds up under pressure. These hydraulic steel tubes offer excellent working pressure capability across a range of wall thicknesses so you can match it to your working pressure.
What it's used for
Oil and water lines, general hydraulic plumbing, plant and machinery builds. A lot of people call it hydraulic pipe, and in the workshop the two words get swapped all the time. Tube is sized by outside diameter. That’s how you order CDS, and it’s what your tube fittings are matched to.
Finish and protection
All CDS hydraulic tubes are E235 annealed, cad plated, shot, oiled and capped, and meet International Standards. Externally, each tube carries a chrome-free (CF6) Zinc coating of 8–12 micron, subsequently passivated and combined with a temporary corrosion inhibitor.
Supply
FPD stocks in 6000mm lengths and cut to order, FPD can supply CDS Line Tubes fast from local stock. Tell us the outside diameter and wall thickness and we’ll sort the rest.
Note: Cold Drawn Seamless steel tube is not suitable for load-bearing applications.
Specification
- Steel grade: E235 (ST37.4)
- Delivery condition: +N (Normalised)
- Outside Diameter (Imperial): 1/4" to 1 1/2"
- Wall thickness: 1mm to 5mm
- Stocked lengths: 6000mm (cut to order available)
- External coating: Chrome-free (CF6) Zinc, 8–12 micron; passivated or chromated
- Factor of Safety: 3:1 (per ASTM A179/A179M)
- Tensile Strength (min): 350MPa
- Yield Strength (min): 235MPa






