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  • Petroleum Steel Pipe
  • Petroleum Steel Pipe
  • Petroleum Steel Pipe
  • Petroleum Steel Pipe
  • Petroleum Steel Pipe

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Petroleum Steel Pipe
Designed for extreme oil and gas environments, our pipes combine API-certified durability (API 5L, 5CT, 5DP) with multi-material versatility - from carbon steel (A106/A53) to corrosion-resistant alloys (316L, 15CrMo). Designed for high-pressure drilling, deepwater exploration and sour gas fields, they offer superior strength (up to P110/Q125 grades), seamless performance and anti-H2S/CO2 corrosion coatings.We can customise your projects, coupled with precision services such as laser cutting, threading or galvanising. Backed by ISO 9001, CE and PED certifications, we ensure fast global delivery (as little as 15 days) and eco-compliance for sustainable operations.
Phone : +86 18306413114
Email : olivia@sdsq-steel.com
Wechat : +86 18306413114
Whatsapp : +86 18306413114
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Product Description


API 5CT N80 casing pipe chemical composition:

Grade

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

N80

0.34-0.38

0.20-0.35

1.45-1.70

≤0.020

≤0.015

≤0.15

/

/

/

0.11-0.16

API 5CT N80 casing pipe mechanical properties:


Grade

Type

Total elongationunder load %

Yield strength MPa

Tensile strength min. MPa

min.

max .


N80

1

0.5

552

758

689

N80

Q

0.5

552

758

689


API 5CT N80 casing pipe specification:
Thread type: SC (Short round thread), LC (Long round thread), BC (Buttress thread)
Length: R1 (4.88-7.62m), R2 (7.62-10.36m), R3 (10.36-14.63m)

Outer  Diameter

Wall Thickness

Weight

Threaded

Length

in

mm

kg/m

lb/ft

4 1/2″

114.3

14.14-22.47

9.50-11.50

LTC/STC/BTC

R1/R2/R3

5″

127

17.11-35.86

11.50-24.10

LTC/STC/BTC

R1/R2/R3

5 1/2″

139.7

20.83-34.23

14.00-23.00

LTC/STC/BTC

R1/R2/R3

6 5/8″

168.28

29.76-35.72

20.00-24.00

LTC/STC/BTC

R1/R2/R3

7″

177.8

25.30-56.55

17.00-38.00

LTC/STC/BTC

R1/R2/R3

7 5/8″

193.68

35.72-63.69

24.00-42.80

LTC/STC/BTC

R1/R2/R3

8 5/8″

219.08

35.72-72.92

24.00-49.00

LTC/STC/BTC

R1/R2/R3

9 5/8″

244.48

48.07-86.91

32.30-58.40

LTC/STC/BTC

R1/R2/R3

10 3/4″

273.05

48.73-97.77

32.75-65.70

LTC/STC/BTC

R1/R2/R3

11 3/4″

298.45

62.50-89.29

42.00-60.00

LTC/STC/BTC

R1/R2/R3

13 3/8″

339.72

71.43-107.15

48.00-72.00

LTC/STC/BTC

R1/R2/R3



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