Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

petroleum casing pipe

Our main products include 8 series: . We can produce seamless steel pipes from OD1/4" to Od24", thickness SCH30, SCH40, SCH80, SCH160 and so on, according to the standards such as GB\ASTM\API 5L\API 5CT, DIN, and JIS..Carbon steel seamless pipes for use in low and medium pressure casing pipe, petroleum casing tubes, petroleum crackings.

(1)From 1/4"-3", our pipes are cold drawning. 

(2)From 4"-12", our pipes are hot rolling. 

(3)Over 12", our pipes are hot expansion.

petroleum casing pipe

API-5CT PETROLEUM CASING PIPE. Casing Pipe&Tubing Pipe and Coupling. 

Our factory manufacture Casing Pipe&Tubing Pipe and Coupling. 
According to API SPEC 5CT. 
Steel grade: J55/K55/N80/L80/P110/C95 
O. D. Range Tubing: From 2-3/8"(60.3mm)to 4"(101.60mm) 
Pipe End: EUE/NU 
Casing: From 4-1/2"(114.3mm) to 20"(508mm), 
Threads: BTC, LTC, STC. 
Length range: R1, R2, R3 
If you interested in our products, feel free to contact with me.

Grade Chemical Composition (%)
C Si Mn P S Cr NI Cu Mo V
J55(37Mn5) - - - ≤ 0.030 ≤ 0.030 - - - -
N80(36 Mn2V) - - - ≤ 0.030 ≤ 0.030 - - - - -

API 5CT K55/J55/N80/L80/P110 

petroleum casing tubing


ISO 9001: 2000 API 5L PSL1 API 5L PSL2 API 5CT

Outside Diameter
Nominal Weight
Threads & Coupling
Steel Grade Wall Thickness
Type of Thread 
  Ib/ft     N U E U
60.32(2 3/8" ) 4.70 H, J, L, P 4.83 YES YES
5.80 C, N, L, P 6.45 YES YES
5.95 L, P 6.45 YES YES
7.35 C, L 8.53   YES
7.45 L, P 8.53   YES
73.02(2 7/8" ) 6.40 H, C, N, L, P 5.51 YES  
6.50 H, C, N, L, P 5.51   YES
7.80 C, N, L, P 7.01 YES  
7.90 C, N, L, P 7.01   YES
8.60 C, N, L, P 7.82 YES  
8.70 C, N, L, P 7.82   YES
9.45 L, C 8.64   YES
88.90(3 1/2" ) 9.20 H, J, C, N, L, P 6.45 YES  
9.30 H, J, C, N, L, P 6.45   YES
10.20 H, J, C, N, L 7.34 YES  
12.70 C, N, L, P 9.52 YES YES
12.95 L, P 9.52   YES
101.60(4" ) 9.50 H, J, C, N, L 5.74 YES  
11.00 H, J, C, N, L 6.65   YES
114.30(4 1/2" ) 12.60 H, J, L, N, C, T 12.75 YES  
12.75 H, J, L, N, C, T 12.75   YES
CONTACT: Mr Mark            

Its products have been sold around China and exported to over dozens of countries and regions in the world such as Southeast Asia, the Middle East, Europe and America etc., enjoying the very high prestige in the domestic and foreign markets. 

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