DIN 1626 Welded Circular Unalloyed Steel Tubes Subject to Special Requirements

1. Field of Application
This standard applies to welded circular tubes and pipes (hereinafter briefly referred to as "tubes") with pipes (hereinafter briefly referred to as "tubes") with a longitudinal or spiral weld, made of unalloyed steels a longitudinal or spiral weld, made of unalloyed steels as listed in table 2. These tubes are predominantly used in the construction of chemical plant, vessels, pipework and for general mechanical engineering purposes, The maximum permissible working pressure and permissible working temperature are specified in table 1.

2. Grade and Designation
DIN 1626 Grade St 33
DIN 1626 Grade St 37
DIN 1626 Grade St 42
DIN 1626 Grade St 34-2
DIN 1626 Grade St 37-2
DIN 1626 Grade St 42-2
DIN 1626 Grade St 52-3
DIN 1626 Grade St 37.0
DIN 1626 Grade St 44.0
DIN 1626 Grade St 52.0
DIN 1626 Grade St 44.4
DIN 1626 Grade St 52.4

3. The Chemical Composition and Mechanical Properties in details, please check DIN 1626.
4. The tolerance on dimension in details, please check DIN 1626.