Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

Seamless Steel pipe for Low temperature pipeline


Standard: 
GB/T 18984-2003


Uses: 
Suitable for -45 ~ -100 °C in low temperature pressure vessel pipelines and low temperature heat exchanger steel tubes.


The main production steel grade: 
09DG, 16MnDG
Seamless Steel pipe for Low temperature pipeline

Mechanical behavior:

Grade

Rm (MPa)

ReL (MPa)

A (%)

Impact test

T ( °C )

Kv ( J)

16MnDG

490~665

≥ 315

≥ 30

-45

≥ 34

10MnDG

400

≥ 240

≥ 35

-45

≥ 34

09D

385

≥ 240

≥ 35

-45

≥ 47

09Mn2VDG

450

≥ 300

≥ 30

-70

≥ 47

 

chemical composition:

Grade

C

Si

Mn

P

S

V

16MnDG

0.12~0.20

0.20 to 0.55

1.20 to 1.60

≤0.025

≤0.025

≤0.03

10MnDG ≤0.13 0.17 to 0.37 ≤1.35 ≤0.025 ≤0.025 ≤0.07
09D ≤0.12 0.17 to 0.37 0.95 to 1.35 ≤0.025 ≤0.025 ≤0.07
09Mn2VDG ≤0.12 0.17 to 0.37 ≤1.85 ≤0.025 ≤0.025 ≤0.12
 

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