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Welded steel pipe


- Commodity: Welded steel pipe

- Standard: GB3091-2001 GB9711.1 GB9711.2 API5L API 5CT

- Grade steel: Q235B/Q345B/L245/L290/L360/L415/L485/20# API 5L.B/X42/X52/X60/X70

- Specification: According to standard

- Price: Negotiate

  • Application:
  • - Used in oil, gas and other liquid pipe system. It can be applicated in ocean construction and chemical factory

Mechanical material property

Grade

Tensile

σb (MPa)

Yield point

σs (MPa)

Elongation

δs (%)

Q235B

375

235

21

Q345B

470 ~ 630

345

21

C20

400

210

27

CT3

373 ~ 481

245

26

Chemical elements

Grade

C

Si

Mn

P

S

Q235B

0.12~0.20

≤ 0.30

0.30~0.70

≤0.045

≤0.045

Q345B

≤ 0.20

≤ 0.55

0.10~0.60

≤ 0.04

≤ 0.04

C20

0.17~0.23

0.10~0.40

0.30~0.60

≤0.045

≤0.045

CT3

~0.18

~0.22

~1.00

≤ 0.03

≤ 0.04