API 5CT N80 casing pipe for oil well drilling

API 5CT N80 casing pipe for oil well drilling

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Description: API 5CT N80 casing pipe covers N80-1 and N80Q types. N80-1 and N80Q steel have same chemical composition and mechanical attributes, and their difference lies in

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Lead Time:

Quantity(Metric Tons) 1 - 10 10 - 50 >50
Est. Time(days) 5 10 Negotiable

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Product Introduction

API 5CT N80 casing pipe covers N80-1 and N80Q types. N80-1 and N80Q steel have same chemical composition and mechanical attributes, and their difference lies in the heat treatment. N80-1 steel is normalized and tempered, while N80Q steel is quenched and tempered. So N80Q steel has higher collapsing strength and internal pressure strength than N80-1 steel. When API 5CT N80 casing pipe is selected, the designer should clearly show N80-1 or N80Q.

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 elongation
under 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

API 5CT N80 casing pipe has higher mechanical properties than J55 casing pipe and K55 casing pipe. With deeper downhole depth than J55 casing pipe and K55 casing pipe, API 5CT N80 casing pipe can be applied for the exploitation of middle-level oil and gas. API 5CT N80 casing pipe is broadly applied in natural gas as well as coal bed methane extraction, and geothermal wells.

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Henan BEBON Iron & Steel Co., Ltd was founded in 2000, which initially focus on providing high-quality steel products to serve for China's rapid infrastructure development. Based on the advantages of steel resources in domestic market and good reputation, combining with the huge international market demand for steel products, BEBON started the international business in 2010 and successfully being approved and certified by ISO9001:2008, the Registration number is 626014Q11531R0S. With the quality steel products and professional service, BEBON was award the international acclaim from infrastructure, shipbuilding, petroleum industry etc., and gradually grow into a bright star in the steel export industry .

With the exploration and innovation of Bebon people, BEBON gradually formed four major advantageous products: steel plate, steel pipe, stainless steel, special steel, and established our own Machining processing center in order to meet customer's diverse requirements.

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