Sch 80 11/2 Inch Din1629 St52.0 Seamless Black Steel Pipes

1 DIN 1629 applies to seamless circular tubes and pipes made of unalloyed steels

2 Material: ST37.0 ST44.0 ST52.0

3 OD: 6mm to 325mm (up to 12”)

4 thickness: 1mm to 50mm

5 length: up to 12 meters

6 these tubes are predominantly used in the construction of chemical plant, vessels,

pipe work and for general mechanical engineering purpose

7 DIN number of dimensional standard DIN2448

8 manufacturer process hot or cold rolling, hot pressing or hot and cold drawing

9 marking: we will be clearly and durably marked at one end, as follows

           A manufacturer's mark

           B symbol identifying the steel grade

           C seamless type tube

           D inspector's mark

Steel Pipe Chemical Composition(%)

standard

Grade

C

Si

Mn

P

S

Cr

Ni

Cu

DIN 1629

St37

<=0.17

0.17-0.37

0.35-0.65

<=0.025

<=0.020

<=0.25

<=0.25

<=0.25

St44

<=0.21

0.17-0.37

0.50-0.80

<=0.025

<=0.020

<=0.25

<=0.25

<=0.25

St55

0.33-0.41

0.17-0.37

0.50-0.80

<=0.025

<=0.020

<=0.25

<=0.25

<=0.25

St52

<=0.22

<=0.55

<=1.60

<=0.025

<=0.020

<=0.25

<=0.25

<=0.25

Ck45

0.42-0.50

0.17-0.37

0.50-0.80

<=0.025

<=0.020

<=0.25

<=0.25

<=0.25

Standard

Grade

Chemical Composition(%)(max)

Mechanical Properties

C

Si

Mn

P

S

Cr

TS (Mpa)

YS(Mpa)

Elongation(%)

DIN1629

St37.0

0.17

/

/

0.04

0.04

/

350-480

235min

25min

St44.0

0.21

/

/

0.04

0.04

/

420-550

255min

21min

St52.0

0.22

0.55

1.7

0.04

0.04

/

550-650

270min

21min