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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
Three copper and two stainless steel flanged pipes

Flanging

Efficient pipe flanging for reliable connections

Flanging is a simple, reliable method for creating sealed joints at the end of a pipe. Using a washer and nut, the flanged connection ensures a tight fit without the need for welding or soldering, making it ideal for prefabricated assemblies and systems that require serviceable joints.

Steel pipe with flange
Copper pipe with double flanging
Bent flanged copper pipe

Straight pipe with flange for one nut
Drawing with measurements for a straight pipe with two nuts
Pipe dimension
(mm)		 A
Flange dimension for nuts		 B
Min. length for flanging
(mm)		 R
Bending radius
(mm)
12 ½" 20 21.6
15 ½" 20 22.5
15 ¾" 20 30
18 ¾" 20 27
18 1" 20 27
22 ¾" 20 33
22 ¾" 20 40
22 1" 20 33
22 1" 20 40
22 1¼" 20 33
22 1¼" 20 40
28 1" 30 55
28 1¼" 30 55
28 1½" 30 55
35 1½" 30 52.5
42 2" 40 60

 

Straight pipe with flanges for two nuts
Pipe dimension
(mm)		 A
Flange dimension for nuts		 B
Min. length for flanging
(mm)		 R
Bending radius
(mm)
12 ½" 45 21.6
15 ½" 45 22.5
15 ¾" 55 30
18 ¾" 55 27
18 1" 55 27
22 ¾" 42 33
22 ¾" 42 40
22 1" 42 33
22 1" 42 40
22 1¼" 110 33
22 1¼" 110 40
28 1" 110 55
28 1¼" 110 55
28 1½" 110 55
35 1½" 110 52.5
42 2" 110 60

 

Bent pipe with flange
Pipe dimension
(mm)		 A
Flange dimension for nuts		 B
Min. length for flanging
(mm)		 R
Bending radius
(mm)
12 ½" 48 21.6
15 ½" 50 22.5
15 ¾" 56 30
18 ¾" 53 27
18 1" 53 27
22 ¾" 56 33
22 ¾" 63 40
22 1" 56 33
22 1" 63 40
22 1¼" 56 33
22 1¼" 63 40
28 1" 85 55
28 1¼" 85 55
28 1½" 85 55
35 1½" 93 52.5
42 2" 100 60

 

End forming for quick connection

End forming creates the double O-ring seat and locking interface that turns a pipe into a quick connection that installs quickly, securely and easily – every time.

Learn more about quick connection