Standard Specification for 20# Seamless Steel Pipe

 20# steel refers to its carbon content of 0.2%, which is a kind of low carbon steel. 20# low carbon seamless pipe is a type of seamless pipe. Seamless steel pipe is relative to welded steel pipe. 20# seamless steel pipe is usually made of round steel perforation and reprocessing. Welded steel pipe is usually made of 20# steel plate. Or steel strips are welded in different ways.

20 # Seamless Steel Pipe Chemical Composition


Standard

Chemical composition

C

Si

Mn

Cr

Mo

Ni

Cu

V

P

S

≤

GB/T8163

0.17-0.23

0.17-0.37

0.35-0.65

0.25

--

0.30

0.25

--

0.035

0.035

GB/T 9948

0.15

0.25

0.20

0.08

0.025

0.015

GB/T 6479

20 # Seamless Steel Pipe Mechanical Properties

Standard

Mechanical Properties

Tensile strength/MPa

Yield strength/MPa

Elongation

KV2/J

S≤16mm

16-30mm

＞30mm

Portrait

Transverse

Portrait

Transverse

≥

Test temperature/℃  0℃

GB/T8163

410-530

245

235

225

20

---

GB/T 9948

410-550

245

24

22

≥40

≥27

GB/T 6479

410-550

245

16-40mm

＞40mm

24

22

≥40

≥27

235

225

20# seamless steel pipe is widely used in various industries due to its excellent performance and reasonable price. The standard specifications for 20# seamless steel pipes are: seamless steel tubes for fluid transportation (GB/T8163-2008), seamless steel tubes for low and medium pressure boilers (GB3087-2008), seamless steel tubes for petroleum cracking (GB9948- 2013) and seamless steel tubes for high pressure fertilizer equipment (GB6479-2013).
The price and performance of 20# seamless steel pipes of different specifications and standards are very different. You can tell the specific use so that we can give you the most suitable quotation. If you are interested in 20# welded pipes, you can also consult us. We have absolute strength in production and can meet your needs.


From:http://boilersteelpipe.com/pro/smls/standard-specification-for-20-seamless-steel-pipe.html

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