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Oilfield Seamless Steel Casing Pipe Steel Grade J55 K55 L80 N80 P110 P110-13Cr

China Puyang Zhongshi Group Co., Ltd. certification
China Puyang Zhongshi Group Co., Ltd. certification
Recommendation is good. Reception is professional. Demo training is also very great. Wish more online training after getting the machine.2017.8.26

—— David

Thanks for your kindly hospitality. Your company is very professional , we will have nice cooperation in the near future. 2015.6.28

—— Sergey

Good company with nice service and high quality and high reputation. One of our reliable supplier , goods are delivered in time and nice package 2016.3.25

—— Steve

Thanks for your good after-sale service. Excellent training and technology support helps me a lot. 2018.4.23

—— Mostafa

Professional, very helpful, great price. Will use again for other items 2019.2.21

—— Ahmed

Thanks for zhongshi group supporting and guidence. With your help and instruction, I win more market share. 2017.9.26

—— Manuel

Nice cooperation with zhongshi group.Imperssive for your service and support. 2018.3.18

—— Luis

We are satisfied with your product's quality. We highly appreciate to see the excellent performances in production capacity and thanks for the specialist technical support from you 2018.11.16

—— Mohammed

Good company with professional service and high quality. Delivered in time. Our most trusted partner for sucker rod and OCTG pipe. 2018.7.24

—— Nicolas

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Oilfield Seamless Steel Casing Pipe Steel Grade J55 K55 L80 N80 P110 P110-13Cr

Oilfield Seamless Steel Casing Pipe Steel Grade J55 K55 L80 N80 P110 P110-13Cr
Oilfield Seamless Steel Casing Pipe Steel Grade J55 K55 L80 N80 P110 P110-13Cr

Large Image :  Oilfield Seamless Steel Casing Pipe Steel Grade J55 K55 L80 N80 P110 P110-13Cr

Product Details:

Place of Origin: China
Brand Name: Zhongshi
Certification: API 5CT, ISO, QHSE
Model Number: 4 1/2"-20"

Payment & Shipping Terms:

Minimum Order Quantity: 1 metric ton
Price: Negotiable
Packaging Details: Be bundled by steel strap
Payment Terms: T/T, L/C
Detailed Product Description
Material: Alloy Steel Steel Grade: J55, K55, L80, N80, P110, P110-13Cr
Standard: API 5CT Shape Of Section: Round
Size OD: 4 1/2"-20" Application: Oil Drilling
High Light:

seamless drill pipe


well casing pipe

Alloy Steel Grade J55 K55 L80 N80 P110 P11013Cr Seamless Casing Pipe In Oilfield
Oil casing descriptions:


Oil casing is a large diameter seamless pipe that is assembled and inserted into the drilled section of the

borehole and typically held into place with cement.


Puyang Zhongshi Group provide various seamless casing from 4-1/2’’-20’’ with steel grade J55,K55,N80,

L80,P110 etc. The Casing pipe length range is R1,R2,R3, with threads of BTC, LTC, STC.


According to the strength of steel, casing pipe steel can be divided into different steel grades. Different

steel grade is used in oil well with different well depth. In corrosive environment also requires the casing

itself has corrosion resistance. In the complicated geologic condition place also asked the casing

having a anti-collapse performance.

1. 4 1/2”-20” seamless casing
2. Hot rolled pipe
Technical specification:


Outside Diameter Wall Thickness Grade Thread
Inch mm kg/m Ib/ft    
4 1/2'' 114.3 14.14-22.47 9.50-15.10 J55/K55/N80/L80/P110 STC/LTC/BTC
5'' 127 17.11-35.86 11.50-24.10 J55/K55/N80/L80/P111 STC/LTC/BTC
5 1/2'' 139.7 20.83-64.14 14.00-43.10 J55/K55/N80/L80/P112 STC/LTC/BTC
6 5/8'' 168.28 29.76-47.62 20.00-32.00 J55/K55/N80/L80/P113 STC/LTC/BTC
7'' 177.8 25.30-84.98 17.00-57.10 J55/K55/N80/L80/P114 STC/LTC/BTC
7 5/8'' 193.68 35.72-82.30 24.00-55.30 J55/K55/N80/L80/P115 STC/LTC/BTC
8 5/8'' 219.08 35.72-72.92 24.00-49.00 J55/K55/N80/L80/P116 STC/LTC/BTC
9 5/8'' 244.48 48.07-112.51 32.30-75.60 J55/K55/N80/L80/P117 STC/LTC/BTC
10 3/4'' 273.05 48.74-126.94 32.75-85.30 J55/K55/N80/L80/P118 STC/LTC/BTC
11 3/4'' 298.45 62.50-105.66 42.00-71.00 J55/K55/N80/L80/P119 STC/LTC/BTC
13 3/8'' 339.73 71.43-107.15 48.00-72.00 J55/K55/N80/L80/P120 STC/LTC/BTC
16'' 406.4 96.73-162.21 65.00-109.00 J55/K55/N80/L80/P121 STC/LTC/BTC
18 5/8'' 473.08 130.22 87.5 J55/K55/N80/L80/P122 STC/LTC/BTC
20'' 508 139.89-197.93 94.00-133.00 J55/K55/N80/L80/P123 STC/LTC/BTC


Mechanical Properties: 

Standard Grade

Tensile Strength


Yield Strength




API SPEC 5CT J55 ≥517 379~552 0.5  
  K55 ≥655 379~552 0.5  
  N80 ≥689 552~758 0.5  
  L80 ≥655 552~655 0.5 ≤241HB
  P110 ≥862 758~965 0.5  




Oilfield Seamless Steel Casing Pipe Steel Grade J55 K55 L80 N80 P110 P110-13Cr 0


Contact Details
Puyang Zhongshi Group Co., Ltd.

Contact Person: Mrs. Liza

Tel: 18192063736

Fax: 86-393-4807842

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