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LK Group

LK Group

  • LK Armatur

    LK Armatur is a leading producer in Europe, manufactures millions of valves per year for the global HVAC market. Our solutions are based on a comprehensive view of how valves, control units, components and prefabricated products work together. Svenska English Deutsch Italiano Yкраїнська Suomi

  • LK Systems

    LK Systems is the leading manufacturer of easy-to-install systems for heating and tap water distribution and pre-insulated pipes in the Nordics. Through our prefabrication factory, we also provide tailor-made solutions that simplify the installation process even further. Svenska English Norsk Suomi

  • LK Pex

    Our PEX Pipe Extrusion business area is an innovative manufacturer of high-quality plastic pipes for the heating and plumbing industry. Our core is the efficient, high-technology production process for crosslinked PE-Xa pipes, resulting in products with a unique combination of flexibility and hydrostatic strength. English

  • LK Group

    LK is a family-owned trading and production group, operating on a global scale within the HVAC-area. We are the market leader in Sweden and has an increasing sales of products, systems and solutions in the Nordic countries, Europe and the USA. Svenska English
Bent copper pipes

Bending

Expert pipe bending in copper and stainless steel

We use high-quality CNC machines to bend copper and stainless steel pipes with accuracy and repeatability. This ensures clean, consistent results that match your exact system requirements – every time.

Diagram of a bent pipe

  • Dimension A is the minimum required straight length before the bend:
      – 20 mm for soldered joints
      – 30 mm for compression fittings
    For best results – and to avoid further cutting – we recommend a straight section of at least 40 mm.

  • Dimension B is the minimum distance required between two consecutive bends.

  • Dimension R indicates the bend radius.

The following applies to bending machines
(in mm)

Pipe diameter

Radius R

Clamp distance B
6 16 40
8 24 30
10 30 40
12 21.6 40
15 22.5/30 30/40
18 27 30/40
22 33/40 40
28 40/55 40
35 52.5/70 80/60
42 60 60

Soft copper pipe in compliance with EN 12735
(in mm)

Diam. x wall thickness
12 x 1.0
15 x 1.0
18 x 1.0
22 x 1.0
22 x 1.5
28 x 1.2
34.94 x 1.45
42 x 1.5

Hard copper pipe in compliance with EN 1057
(in mm)

Diam. x wall thickness
8 x 0.8
10 x 1.0

Stainless steel pipe in compliance with EN 10088-3-1.4404 (AISI 316L)
(in mm)

Diam. x wall thickness
6 x 1.0
8 x 1.0
18 x 1.0
10 x 1.0
12 x 1.0
15 x 1.0
18 x 1.0
22 x 1.0
22 x 1.5
28 x 1.0
28 x 1.2
28 x 1.5
35 x 1.0