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

OCTG Casing Tubing


Sell API-5CT Casing, Tubing, Coupling. 
Our factory manufacture Casing, Tubing: 
According to API SPEC 5CT. 
Steel grade: J55, K55, L80, N80, C95, P110 
O. D. Range Tubing: From 2-3/8"to 4-1/2"(EUE/NU) 
Casing: From 4-1/2" to 20", 
Threads: BTC, LTC, STC. 
Length range: R1, R2, R3 

OCTG Casing Tubing

OCTG TUBING PIPES
STANDARD: API SPEC 5CT
Outside Diameter
Specified(mm)
Nominal Weight
Threads & Coupling
Steel Grade Wall Thickness (mm)  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
CASING PIPES
STANDARD: API SPEC 5CT 
Outside Diameter
Specified(mm)
Nominal Weight
Threads & Coupling
Steel Grade Wall Thickness
  (mm) 
Type of Thread 
  Ib/ft     Short   Long Buttress  TG-QMI
114.30(4 1/2") 9.50 H,J,K 5.21 YES      
10.50 J,K 5.69 YES   YES  
11.60 J,K,C,L,N,P 6.35 YES YES YES  
13.50 C,L,N,P 7.37   YES YES  
15.10 P,Q 8.56   YES YES  
127.00(5") 11.50 J,K 5.59 YES      
13.00 J,K 6.43 YES YES YES  
15.00 J,K,C,L,N,P 7.52 YES YES YES  
18.00 C,L,N,P,Q 9.19   YES YES  
21.40 C,L,N,P,Q 11.10   YES YES  
23.20 C,L,N,P,Q 12.14   YES YES  
24.10 C,L,N,P,Q 12.70   YES YES  
139.70(5 1/2") 14.00 H,J,K 6.20 YES      
15.50 J,K 6.98 YES YES YES YES
17.00 J,K,C,L,N,P 7.72 YES YES YES YES
20.00 C,L,N,P 9.17   YES YES YES
23.00 C,L,N,P,Q 10.54   YES YES YES
168.28(6 5/8") 20.00 H,J,K 7.32 YES YES YES  
24.00 J,K,C,L,N,P 8.94 YES YES YES  
28.00 C,L,N,P 10.59   YES YES  
32.00 C,L,N,P,Q 12.06   YES YES  
177.80(7") 20.00 H,J,K 6.91 YES      
23.00 J,K,C,L,N 8.05 YES YES YES YES
26.00 J,K,C,L,N,P 9.19 YES YES YES YES
29.00 C,L,N,P 10.36   YES YES YES
32.00 C,L,N,P 11.51   YES YES YES
35.00 C,L,N,P,Q 12.65   YES YES YES
38.00 C,L,N,P,Q 13.72   YES YES YES
193.68(7 5/8") 24.00 H 7.62 YES      
26.40 J,K,C,L,N 8.33 YES YES YES  
29.70 C,L,N,P 9.52   YES YES  
33.70 C,L,N,P 10.92   YES YES  
39.00 C,L,N,P,Q 12.70   YES YES  
42.80 C,L,N,P,Q 14.27   YES YES  
45.30 C,L,N,P,Q 15.11   YES YES  
47.10 C,L,N,P,Q 15.88   YES YES  
196.85(7 3/4") 46.10 C,L,N,P,Q 15.11        
219.08(8 5/8") 24.00 J,K 6.71 YES      
28.00 H 7.72 YES      
32.00 H,J,K 8.94 YES YES YES  
36.00 J,K,C,L,N 10.16 YES YES YES  
40.00 C,L,N,P 11.43   YES YES  
44.00 C,L,N,P 12.70   YES YES  
49.00 C,L,N,P,Q 14.15   YES YES  
244.48(9 5/8") 32.30 H 7.92 YES      
36.00 H,J,K 8.94 YES YES YES YES
40.00 J,K,C,L,N 10.03   YES YES YES
43.50 C,L,N,P 11.05   YES YES YES
47.00 C,L,N,P,Q 11.99   YES YES YES
53.50 C,L,N,P,Q 13.84   YES YES YES
273.05(10 3/4") 32.75 H 7.09 YES      
40.50 H,J,K 8.89 YES   YES  
45.50 J,K 10.16 YES   YES  
51.00 J,K,C,L,N,P 11.43 YES   YES  
55.50 C,L,N,P 12.57 YES   YES  
60.70 P,Q 13.84 YES   YES  
65.70 P,Q 15.11 YES   YES  
298.45(11 3/4") 42.00 H 8.46 YES      
47.00 J,K,M 9.53 YES   YES  
54.00 J,K,M 11.05 YES   YES  
60.00 J,K,M,L,N,C,P,Q 12.42 YES   YES  
339.7(13 3/8") 48.00 H 8.38 YES      
54.50 J,K 9.65 YES   YES  
61.00 J,K 10.92 YES   YES  
68.00 J,K,C,L,N,P 12.19 YES   YES  
72.00 C,L,N,P,Q 13.06 YES   YES  
406.40(16") 65.00 H 9.53 YES      
75.00 J,K,M 11.13 YES   YES  
84.00 J,K,M 12.57 YES   YES  
473.08(18 5/8") 87.50 H,J,K,M 11.05 YES YES YES  
508.00(20") 94.00 H,J,K 11.13 YES YES YES  
106.50 J,K 12.70 YES YES YES  
133.00 J,K 16.13 YES YES YES  

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