Flexibly jointed concrete pipes (to BS 5911: Part 100) are manufactured with internal diameters ranging from 225 mm to 2.4 m. The length is generally 2.5 m though shorter lengths are available. Bends and junctions are also available. The joints incorporate fixed or loose seals.
For trenchless construction, jacking pipes (to BS 5911: Part 120) are manufactured in diameters from 900 mm to 3 m, in lengths up to 2.5 m. Joints may be set into the wall or by means of steel bands. Micro-tunnelling pipes are produced in diameters from 450 mm to 900 mm, with lengths up to 2.5 m.
Non-circular pipes (ovoid and elliptical) are available in a range of sizes with a standard length of about 2.5 m.