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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

Bending

We use high-quality CNC machines to bend copper and stainless steel in the specified dimensions shown in the tables below

bending drawing

Dimension A on the drawing refers to the minimum straight distance, which is 20 mm when soldering and 30 mm when connecting with a compression fitting. To avoid subsequent cutting, a straight length of 40 mm is preferable.

Dimension B refers to the minimum distance between two bends.
Dimension R is the bend radius.

The following applies to bending machines

Pipe diameter (mm) Radius R (mm) Clamp distance B (mm)
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, for bending
diameter x wall thickness (mm)
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

Stainless steel pipe in compliance with EN 10088-3-1.4404 (AISI 316L), for bending
diameter x wall thickness (mm)
6 x 1.0
8 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

See one of our bending machines in action