Pipes can be produced in several ways
Depending on the raw materials and the method of production, there are:Main phases of production:
Longitudinal pipes steel electroweldedThere are two the most used welding methods: gas tungsten arc welding (GTAW) - is an arc welding process that uses a non-consumable tungstenelectrode to produce the weld and high frequency (HF) welding - is the joining of materials by supplying HF energy in the form of an electromagnetic field.
The weld made with the first method is stronger but the second method of welding is about 20 times faster, respectively, HF welded pipes are much cheaper.
Production of this type of the pipes is the same as the production of the longitudinal pipes steel electrowelded but the strand is rolled up with roll mills, turning not into the pipe, but into the spiral. Spiral weld provides the pipe with great tensile strength.
This process makes the steel more ductile, also unavoidable internal stresses leave the metal.
The market offers seamless cold-rolled pipes with wall thickness of 0.3 to 24mm, diameter from 5 to 250mm.
Round pipes:
Wall thickness from 1mm to 2.5mmThe production of AV metal group corresponds to the European certificate of factory production control in accordance with the DIN EN 102-12-1: 2006. For more information follow the link. This standard regulates the production of welded circular and shaped pipes that are manufactured in a cold way.
Our products are subject to internal factory control, which is inspected by the supervision web-site of construction products in the TÜV Thüringen e. V.
The range of pipes that is certified according to the DIN EN 102-12-1: 2006 and includes:
Size, mm | Wall thickness, mm | Size, mm | Wall thickness, mm | Size, mm | Wall thickness, mm |
15х15 15х15 15х15 |
1 (1.2) 1.0 1.2 |
30х30 | 1.7 | 50х30 | 1.5 |
15х15 | 1.5 | 30х30 | 1.8 | 50х30 | 1.7 |
15х15 | 1.7 | 30х30 | 2 | 50х30 | 1.8 |
15х15 | 1.8 | 40х20 | 1.2 | 50х30 | 2 |
15х15 | 2 | 40х20 | 1.5 | 50х30 | 2.8 |
17х17 20х20 20х20 |
1 (1.2-2) 1.0 1.2 |
40х20 | 1.7 | 50х30 | 3 |
20х20 | 1.5 | 40х20 | 1.8 | 50х50 | 1.5 |
20х20 | 1.7 | 40х20 | 2 | 50х50 | 1.7 |
20х20 | 1.8 | 40х25 | 1.5 | 50х50 | 1.8 |
20х20 | 2 | 40х25 | 1.7 | 50х50 | 2 |
25х25 | 1.2 | 40х25 | 1.8 | 50х50 | 2.8 |
25х25 | 1.5 | 40х25 | 2 | 50х50 | 3 |
25х25 | 1.7 | 40х40 | 1.5 | 60х40 | 1.5 |
25х25 | 1.8 | 40х40 | 1.7 | 60х40 | 1.7 |
25х25 | 2 | 40х40 | 1.8 | 60х40 | 1.8 |
30х20 | 1.2 | 40х40 | 2 | 60х40 | 2 |
30х20 | 1.5 | 40х40 | 2.8 | 60х40 | |
Size, mm | Wall thickness, mm | Size, mm | Wall thickness, mm | Size, mm | Wall thickness, mm |
15х15 15х15 15х15 |
1 (1.2) 1.0 1.2 |
30х30 | 1.7 | 50х30 | 1.5 |
15х15 | 1.5 | 30х30 | 1.8 | 50х30 | 1.7 |
15х15 | 1.7 | 30х30 | 2 | 50х30 | 1.8 |
15х15 | 1.8 | 40х20 | 1.2 | 50х30 | 2 |
15х15 | 2 | 40х20 | 1.5 | 50х30 | 2.8 |
17х17 20х20 20х20 |
1 (1.2-2) 1.0 1.2 |
40х20 | 1.7 | 50х30 | 3 |
20х20 | 1.5 | 40х20 | 1.8 | 50х50 | 1.5 |
20х20 | 1.7 | 40х20 | 2 | 50х50 | 1.7 |
20х20 | 1.8 | 40х25 | 1.5 | 50х50 | 1.8 |
20х20 | 2 | 40х25 | 1.7 | 50х50 | 2 |
25х25 | 1.2 | 40х25 | 1.8 | 50х50 | 2.8 |
25х25 | 1.5 | 40х25 | 2 | 50х50 | 3 |
25х25 | 1.7 | 40х40 | 1.5 | 60х40 | 1.5 |
25х25 | 1.8 | 40х40 | 1.7 | 60х40 | 1.7 |
25х25 | 2 | 40х40 | 1.8 | 60х40 | 1.8 |
30х20 | 1.2 | 40х40 | 2 | 60х40 | 2 |
30х20 | 1.5 | 40х40 | 2.8 | 60х40 | 2.8 |
30х20 | 1.7 | 40х40 | 3 | 60х40 | 3 |
30х20 | 1.8 | 50х25 | 1.5 | 60х60 | 1.8 |
30х20 | 2 | 50х25 | 1.7 | 60х60 | 2 |
30х30 | 1.2 | 50х25 | 1.8 | 60х60 | 2.8 |
30х30 | 1.5 | 50х25 | 2 |
60х60 80х60 80х40 80х40 |
3 1.8 1,8 2.8 (3) |
2.8 |
30х20 | 1.7 | 40х40 | 3 | 60х40 | 3 |
30х20 | 1.8 | 50х25 | 1.5 | 60х60 | 1.8 |
30х20 | 2 | 50х25 | 1.7 | 60х60 | 2 |
30х30 | 1.2 | 50х25 | 1.8 | 60х60 | 2.8 |
30х30 | 1.5 | 50х25 | 2 |
60х60 80х60 80х40 80х40 |
3 1.8 1,8 2.8 (3) |
Up to date, Birlik Makine has been installed and put into operation, on which electro-welded round and shaped pipes are produced. The type of welding is high-frequency welding. Also, square and rectangular welded shaped pipes, round pipes for gas and water conveyance, structural pipes from hot-rolled and cold-rolled coiled steel are produced.