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MANUFACTURE OF PIPES
ACCORDING TO DIN STANDARD 1626/84
Tsteel pipe with rectilinear or spiral welding. Applies for water, and hot water transfer and for tank, branching pipes.
Maximum pressure and working temperature are given in
Table. 1 (values o f sustainability, the pipe material)
* given in layer 1
* in temperature 300°C
This parameter applies to:
Welded pipes with circular shape from non ferro-alloy steel, for special requirements (see DIN 1615).
Welded pipes with circular shape from ferro-alloy steel, for special requirements (see DIN 1626).
Welded pipes with circular shape from general steel, for construction see (DIN 17120).
Steel pipes for pipe conduit for liquids and flammable gases (DIN 17 172).
MANUFACTURE METHOD
Method of manufacture remain to manufacturer (ERW weld fusion or ARC).
MATERIAL
The laminated metal sheet used in hot (SHNL) technically handled – normalized.
CHEMICAL COMPOSITION
(Table 2) mechanical properties shall comply with the GIVEN requirements tab.4
Dimensions and permissible measures
1. Outer diameter (applies tab. 4)
2. Allowed deviations for thickness tab.4. 4.10.2.2
3. Allowed height of welding
T ≤ 8mm 2.5 mm
8 ≤ t ≤ 14 3.0 mm
14 ≤ t ≤ 40 4.0 mm