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OCTG pipes

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OCTG Pipes

OCTG pipe

Octg Tubing And Casing

Octg Tubing And Casing

Threaded Drill Pipe

Threaded Drill Pipe

 

High quality Manufacturer of octg steel pipe, stockist of octg seamless pipe, octg line pipe, Check octg pipe specifications & types of octg pipe

Oil country tubular goods or as also known as OCTG pipe are a family of seamless rolled products. These products consist of a drill pipe, as well as octg tubing and casing all of which have been subjected to loading conditions depending on their specific application.

The octg casing lines a borehole. This casing is subject to axial tension by its dead weight, in addition to the internal pressure by fluid purging, as well as the external pressure applied by the surrounding rock formations. The casing is particularly exposed to axial tension and the internal pressure occurred by the pumping of oil or gas emulsion. On the other hand, an octg tube is essentially is a pipe through which the media such as oil or gas is conveyed from the wellbore. Segments of the octg tubing are generally around 30 ft or 9 m in length with a threaded connection on each end.

An octg drill pipe is a heavy seamless tube which has the ability to rotate the drill bit while it circulates drilling fluid. Pipe segments 30 ft in length are frequently coupled with tool joints. A Threaded Drill Pipe is simultaneously subjected to axial tension by its dead weight, high torque by drilling, as well as internal pressure when drilling fluid has been purged. Additionally, changing the bending loads in a sequence due to non-vertical or deflected drilling could be superimposed on these basic loading patterns.

 

What mean by Oil Country Tubular Goods?

The term Oil Country Tubular Goods describes tubes that are used in oil and gas production: As a rule these include drill pipe, casing and tubing

 

material specification standard of octg pipe

Product: Casing Pipe, Oil Casing, API Casing, Well Casing, Casing
Application: Used for oil casing and tubing in oil wells as well as sidewall
Size: OD: 114.3mm-508mm
WT: 5-16mm
LENGTH: R1, R2, R3
Pipe Standard: API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q,
API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125
Thread: NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS
Special Service Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Type of threading of the pipe:  STC, LTC, BTC, WSP-1T
Tubing Pipe length:  R3 10.36-12.20 (34″-40″)
Accessories: Pup Joint, Coupling, Drill Collar, Crossover etc.

 

OCTG API Tubing

Product: Tubing Pipe, Oil Tubing, API Tubing Well Tubing, Tubing
Application: Used for extracing Oil or Gas from Wells
Size: OD: 48.26mm-114.3mm
WT: 3.18-16mm
LENGTH: R1, R2, R3
Pipe Standard: API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q,
API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125
Thread: NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS
Special Service Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Accessories: Pup Joint, Coupling, Drill Collar, Crossover etc.

 

OCTG Casing Pipe

Product: Casing Pipe, Oil Casing, API Casing, Well Casing, Casing
Application: Used for oil casing and tubing in oil wells as well as sidewall
Size: OD: 114.3mm-508mm
WT: 5-16mm
LENGTH: R1, R2, R3
Pipe Standard: API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q,
API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125
Thread: NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS
Special Service Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Accessories: Pup Joint, Coupling, Drill Collar, Crossover etc.

 

OCTG Tubing And Casing Coupling

Product: Casing and Tubing Coupling, Casing Coupling, Tubing Coupling
Application: Used for connect 2 joints of tubing or casing
Size: Tubing Coupling : 1.9'' - 4-1/2''
Casing Couping : 4-1/2'' - 13-3/8''
Pipe Standard: API 5CT and 5B PSL1/PSL2 J55,K55,N80-1,N80-Q,
API 5CT and 5B L80-1,C90, C95,T95, P110, Q125
Surface: Whole Phosphating or inside phosphating and outside coating
Thread: NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS
Special Service Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Packing: By carton, wooden case, wooden pallet or requirement of customer

 

OCTG Pup Joint

Product: Pup Joint, OCTG Pup Point
Application: Pipe Cut into length used for connect 2 joints of tubing or casing
Size: Tubing Coupling : 2-3/8'' - 4-1/2''
Casing Couping : 4-1/2'' - 20'
Length: 2, 3, 4, 6, 8, 10, 12 ft
Pipe Standard: API 5CT and 5B J55,K55,N80-1,N80-Q,P110, C95
Surface: Coating
Thread: BTC, LTC, STC
Special Service Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156
Packing: By carton, wooden case, wooden pallet or requirement of customer

 

Types Of Octg pipe

Types Of Octg pipe

 

OCTG casing pipe

OCTG casing pipe are a key structural component for an oil & gas well and have the following scope:

  • Keep the borehole stability in the well
  • Prevent the bore contamination from water sands
  • Prevent water from producing formations
  • Exercise a tight control of the wellbore pressures during the drilling, production, and repair operations

The six basic types of casing strings are:

  • Conductor Casing
  • Surface Casing
  • Intermediate Casing
  • Production Casing
  • Liner
  • Liner tieback casing

Dimensions and Materials

Casing pipe are available in a diameter range 4 1/2  to 20 inches, and in the following materials: H-40, J-55, K-55, N-80, L-80/C, 90/T, 95, P110, Q-125 – as discussed in more detail below.

End Connection Types

The main types of connections for casing pipe are STC (short threads), LTC (long threads), BTC (buttress threads) and premium gas-tight connections.

 

Octg “Tubing” pipe

Sizes and Materials

Tubing pipe are manufactured in seamless and welded execution, in the size range of 1.050 to 5 1/2 inches

End Connections

The main types of connections for tubing pipe are NUE (non-upset), EUE (external upset) and premium. Corrosion resistance under sour service conditions is a very important OCTG characteristic, especially for casing and tubing.

 

OCTG Drill pipe

Drill pipe is a heavy, seamless tube that rotates the drill bit and circulates drilling fluid. It allows the drilling fluid to be pumped through the bit and back up the annulus. Drill Pipe normally mean for the Durable steel pipe used in drilling, standards in API 5DP and API SPEC 7-1.

Product: Drill Pipe
Application: Used for Mine, water well drilling, well drilling, coal and fore poling
Size: OD: 60.32mm-168.28mm
WT: 6.45-12.7mm
LENGTH: R1, R2, R3
Pipe Standard: API 5DP E75, X95, G105, S135
Upset Style: IU, EU, IEU
Connection: NC26 - NC50, 5 1/2FH, 6 5/8FH
Internal coating TK34,TC2000, Arnco 100XT, 200XT, 300XT

 

Tubing drill pipe ensure thread connections of various kinds including the following categories,

  • Integral connections
  • Extreme line
  • Integral thread seal connections
  • VAM premium connections
  • Integral metal seal connections
  • Coupled connections
  • BTC
  • API (STC and LTC)
  • Threaded connections

 

prime quality octg drill pipe Suppliers, importer of octg tubing , find here octg pipe prices, Stockholder of tuberia octg

 

Price list of octg seamless pipe

Steel Casing Pipe cost is lower than drill pipe or the OCTG tubing cost, it is usually higher 200 USD than the regular API 5L pipe. Considering the Threading + Coupling cost or the heating treatment.

 

Octg Pipe Manufacturing Process

The manufacturing processes of casing and tubing pipe include:

  • Continuous mandrel-rolling process and the push bench process for sizes between 21 and 178 mm OD.
  • Plug mill rolling for sizes between 140 and 406 mm OD.
  • Cross-roll piercing and Pilger rolling for sizes between 250 and 660 mm OD.

These processes typically do not allow the thermo-mechanical processing customary for the strip and plate products used for welded pipe.

 

Basic types of octg line pipe

Octg Casing Pipe

Octg Casing Pipe

Octg Tubing

Octg Tubing

Octg Drill Pipe

Octg Drill Pipe

Octg Seamless Pipe

Octg Seamless Pipe

 

Hot Sale of octg casing, octg pipe threading, Get octg pipe distributors, See difference between octg and line pipe

 

Octg Casing Pipe Dimensions

Note: P = plain end, S = short round thread, L = long round thread, B = buttress thread. Sizes per API 5CT specification

OCTG Pipe Sizes
(Casing)
API5CT
Weight
Lbs/ft
Outside Diameter Wall Thickness Type End Finish
Grade
ln. mm ln. mm H-40 J-55 K-55 M-65 L-80C-95 N-80 C-90T-95 P-110 Q-125
7 5/8” 24.00 7.625 193.68 0.300 7.62 PS
26.40 7.625 193.68 0.328 8.33 PSLB PSLB PLB PLB PLB PLB
29.70 7.625 193.68 0.375 9.53 PLB PLB PLB PLB PLB
33.70 7.625 193.68 0.430 10.92 PLB PLB PLB PLB PLB
39.00 7.625 193.68 0.500 12.70 PLB PLB PLB PLB PLB
42.80 7.625 193.68 0.562 14.27 PLB PLB PLB PLB PLB
45.30 7.625 193.68 0.595 15.11 PLB PLB PLB PLB PLB
47.10 7.625 193.68 0.625 15.88 PLB PLB PLB PLB PLB
51.20 7.625 193.68 0.687 17.45 P
55.30 7.75 193.68 196.85 19.05 P
7 3/4” 46.10 8.625 219.08 0.595 15.11 P P P P P
8 5/8” 24.00 8.625 219.08 0.264 6.71 PS PS
28.00 8.625 219.08 0.304 7.72 PS PS
32.00 8.625 219.08 0.352 8.94 PS PSLB PSLB
36.00 8.625 219.08 0.400 10.16 PSLB PSLB PLB PLB PLB PSLB
40.00 8.625 219.08 0.450 11.43 PLB PLB PLB PLB PLB
44.00 8.625 219.08 0.500 12.70 PLB PLB PLB PLB PLB
49.00 9.625 244.48 0.557 14.15 PLB PLB PLB PLB PLB
9 5/8” 32.30 9.625 244.48 0.312 7.92 PS
36.00 9.625 244.48 0.352 8.94 PS PSLB PSLB
40.00 9.625 244.48 0.395 10.03 PSLB PSLB PLB PLB PLB
43.50 9.625 244.48 0.435 11.05 PLB PLB PLB PLB PLB
47.00 9.625 244.48 0.472 11.99 PLB PLB PLB PLB PLB PLB
53.50 9.625 244.48 0.545 13.84 PLB PLB PLB PLB PLB
58.40 9.625 244.48 0.595 15.11 PLB PLB PLB PLB PLB
59.40 9.625 244.48 0.609 15.47 P
64.90 9.625 244.48 0.672 17.07 P
70.30 9.625 244.48 0.734 18.64 P
75.60 9.625 244.48 0.797 20.24 P

 

OCTG Casing
Pipe Size
API5CT
Weight Lb/ft Outside Diameter Wall Thickness Type End Finish
Grade
ln. mm ln. mm H-40 J-55
K-55
M-65 L-80
C-95
N-80 C-90T-95 P-110 Q-125
10 3/4” 32.75 10.75 273.05 0.279 7.09 PS
40.50 10.75 273.05 0.350 8.89 PS PSB PSB
45.50 10.75 273.05 0.400 10.16 PSB PSB
51.00 10.75 273.05 0.450 11.43 PSB PSB PSB PSB PSB PSB
55.50 10.75 273.05 0.495 12.57 PSB PSB PSB PSB PSB
60.70 10.75 273.05 0.545 13.84 PSB PSB PSB
65.70 10.75 273.05 0.595 15.11 PSB PSB PSB
73.20 10.75 273.05 0.672 17.07 P
79.20 10.75 273.05 0.734 18.64 P
85.30 10.75 273.05 0.797 20.24 P
11 3/4” 42.00 11.75 298.45 0.333 8.46 PS
47.00 11.75 298.45 0.375 9.53 PSB PSB
54.00 11.75 298.45 0.435 11.05 PSB PSB
60.00 11.75 298.45 0.489 12.42 PSB PSB PSB PSB PSB PSB PSB
65.00 11.75 298.45 0.534 13.56 P P P P P
71.00 11.75 298.45 0.582 14.78 P P P P P
13 3/8” 48.00 13.375 339.73 0.330 8.38 PS
54.50 13.375 339.73 0.380 9.65 PSB PSB
61.00 13.375 339.73 0.430 10.92 PSB PSB
68.00 13.375 339.73 0.480 12.19 PSB PSB PSB PSB PSB PSB
72.00 13.375 339.73 0.514 13.06 PSB PSB PSB PSB PSB
P-plain end;S-short round thread;L-long round thread;B-buttress thread

 

Mail Us For Best Price For Octg Steel Pipe

Seamless Casing, API 5CT J55, 13-3/8 Inch, 54.50 LB/FT, Range 3
Seamless Casing, API 5CT J55, 13-3/8 Inch, 54.50 LB/FT, Range 3
API 5CT N80Q Seamless Casing, 9-5/8 Inch, Range 3, 43.50 IB/FT
API 5CT N80Q Seamless Casing, 9-5/8 Inch, Range 3, 43.50 IB/FT
API 5CT Seamless Piping, N80Q, 4-1/2 Inch, Ends Design EU/RD
API 5CT Seamless Piping, N80Q, 4-1/2 Inch, Ends Design EU/RD
API 5CT Seamless Casing, N80Q, R3, 9-5/8 Inch, Ends Design BC
API 5CT Seamless Casing, N80Q, R3, 9-5/8 Inch, Ends Design BC
N80Q Seamless Casing, API 5CT, R3, 9-5/8 Inch, Black Painted
N80Q Seamless Casing, API 5CT, R3, 9-5/8 Inch, Black Painted
N80Q Seamless Tubing, API 5CT, R2, 4-1/2 Inch, Painted
N80Q Seamless Tubing, API 5CT, R2, 4-1/2 Inch, Painted
OCTG Tubing Pipe, API 5CT
OCTG Tubing Pipe, API 5CT
S135 Drill Pipe 60.3mm NC26 7.11mm
S135 Drill Pipe 60.3mm NC26 7.11mm

 

Octg Tubing Pipe dimensions

Note: P = plain end, N = Non-upset thread and coupling, U = upset thread and coupling. Sizes per API 5CT specification

OCTG
Pipe Sizes (Tubing)
API5CT
Weight Lb/ft Outside Diameter Wall Thickness Nominal Weight Type End Finish
Grade
Nonupset Ex-upset mm mm Nonupset Ex-upset J-55 L-80 N-80 C-90 T-95 P-110
T & C T & C T & C T & C
2 3/8” 4 60.32 4.24 5.95 PN PN PN PN PN
4.6 4.7 60.32 4.83 6.85 6.99 PNU PNU PNU PNU PNU PNU
5.8 5.95 60.32 6.45 8.63 8.85 PNU PNU PNU PNU PNU
6.6 60.32 7.49 9.82 P P P
7.35 7.45 60.32 8.53 10.94 11.09 PU PU PU
2 7/8” 6.4 6.5 73.02 5.51 9.52 9.67 PUN PNU PNU PNU PNU PNU
7.8 7.9 73.02 7.01 11.61 11.76 PNU PNU PNU PNU PNU
8.6 8.7 73.02 7.82 12.8 12.95 PNU PNU PNU PNU PNU
9.35 9.45 73.02 8.64 13.91 14.06 PU PU PU
10.5 73.02 9.96 15.63 P P P
11.5 73.02 11.18 17.11 P P P
3 1/2” 7.7 88.9 5.49 11.46 PN PN PN PN PN
9.2 9.3 88.9 6.45 13.69 13.84 PNU PNU PNU PNU PNU PNU
10.2 88.9 7.34 15.18 PN PN PN PN PN
12.7 12.95 88.9 9.52 18.9 19.27 PNU PNU PNU PNU PNU
14.3 88.9 10.92 21.28 P P P
15.5 88.9 12.09 23.07 P P P
17 88.9 13.46 25.3 P P P
4” 9.5 101.6 5.74 14.14 PN PN PN PN PN PN
10.7 11 101.6 6.65 16.37 PU PU PU PU PU PU
13.2 101.6 8.38 19.64 P P P
16.1 101.6 10.54 23.96 P P P
18.9 101.6 12.7 28.13 P P P
22.2 101.6 15.49 33.04 P P P
4 1/2” 12.6 12.75 114.3 6.88 18.75 18.97 PUN PNU PNU PNU PNU PNU
15.2 114.3 8.56 22.62 P P P
17 114.3 9.65 25.3 P P P
18.9 114.3 10.92 28.13 P P P
21.5 114.3 12.7 32 P P P
23.7 114.3 14.22 35.27 P P P
26.1 114.3 16 38.84 P P P

 

Api 5ct Tolerances

Execution Outer Diameter Wall Thickness
Cold rolled Tube sizes(mm) Tolerances(mm)
<114.3 ±0.79 -12.5%
≥114.3 -0.5%,+1%

 

Octg Pipe Materials/ Octg Casing Pipe Standard/ Octg Tubing Grades

The most common materials for OCTG pipe are API H40, J55, K55, L80, N80, P110, and Q125 (casing and tubing pipe). These API grades feature increasing mechanical properties (tensile and yield strength).

The standards above govern the characteristics of OCTG when it comes to 

  • Manufacturing methods
  • Joints type and Length Range
  • Wall thickness
  • Casing Weights 
  • Steel Grades
  • Connection 
  • Chemical Properties 
  • Tensile Properties 

 

OCTG casing and tubing pipe are available in the following material grades:

 

API H40

API H40 grade is for general purpose OCTG pipe material with the following mechanical properties:

Chemical Formula of API H40

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min
Max 0.030 0.030

 

Mechanical Properties of API H40

Min Tensile Strength 414 MPa 60,000 psi min
Min Yield Strength 276 MPa 552 MPa max
40,000 psi 80,000 psi max
Total Elongation Under Load 0.500 %

 

API J55

The J55 API-5CT casing pipe is a comparatively low steel grade in oil drilling. It is widely applied to shallow oil and gas extraction.

 

API J55 Chemical Element

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min
Max 0.030 0.030

 

API J55 Mechanical Characteristics

Min Tensile Strength 517 MPa 75,000 psi min
Min Yield Strength 379 MPa 552 MPa max
55,000 psi 80,000 psi max
Total Elongation Under Load 0.500 %

 

API L80

L80 belongs to steel grades group of the corrosion-resistant casing. L80 API oilfield casing pipe includes L80-1, L80-9Cr, and L80-13Cr. L80-1 is used in the H2S environment, while L80-9Cr and L80-13Cr are used in the CO2 environment.

 

Composition Standard of API L80

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min
Max 0.430 1.900 0.250 0.350 0.030 0.030 0.450

 

Mechanical Strength Table API L80

Min Tensile Strength 655 MPa 95,000 psi min
Min Yield Strength 552 MPa 655 MPa max
80,000 psi 95,000 psi max
Total Elongation Under Load 0.500 %
Hardness 23 Max HRC 241 Max HBW

 

Chemical Compatibility of 9Cr-L80

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min 0.300 0.900 8.000

 

Mechanical Behaviour of 9Cr-L80

Min Tensile Strength 655 MPa 95,000 psi min
Min Yield Strength 552 MPa 655 MPa max
80,000 psi 95,000 psi max
Total Elongation Under Load 0.500 %
Hardness 23 Max HRC 241 Max HBW

 

API N80

API-5CT N80 oilfield casing pipe contains N80-1 and N80-Q types. Those two materials are absolutely consistent regarding the chemical composition and mechanical attributes, they are just variations in the heat treatment.

Composition chart Of API N80

C Mn Mo Cr Ni Cu Ti P S Si V Al
Min
Max 0.030 0.030

 

Mechanical Analysis Of API N80

Min Tensile Strength 689 MPa 100,000 psi min
Min Yield Strength 552 MPa 758 MPa max
80,000 psi 110,000 psi max
Total Elongation Under Load 0.500 %
Hardness

 

API P110

The P110 API-5CT steel casing pipe is the high grade amongst other grades of steel. The white band is marked on the finished casing to point out the materials.

 

API Q125 

This API grade is generally used for deep wellbore service and not in sour condensate wells.

 

Premium Connections of OCTG

The Premium Connection Series is a special range of casing tubing accessories that are manufactured and marketed by the Oil Country Tubular Goods Supply. 
  • The Premium Connection Series that includes both tubing and casing parts are used large scale in high pressure oil wells.
  • Casing tubing accessories of this series are used in the high pressure gas wells as well.
  • Deep and over deep wells are another place where casing tubing parts of the Premium Connection Series find a very significant use.
  • Drill accessories of this kind are used in high collapse wells and hot well-drilling wells as well.
  • Drill pipe of this kind come in handy when digging oriented wells and specifically over-clint wells that are horizontally dug.

 

octg steel pipe Chemical Composition

Group OCTG pipe materials Type C Mn Mo Cr Ni max. Cu max. P max. S max. Si max.
min. max. min. max. min. max. min. max.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1
H40
0.03
0.03
J55
0.03
0.03
K55
0.03
0.03
N80
1
0.03
0.03
N80
Q
0.03
0.03
R95
0.45 c
1.9
0.03
0.03
0.45
2
M65
0.03
0.03
L80
1
0.43 a
1.9
0.25
0.35
0.03
0.03
0.45
L80
9Cr
0.15
0.3
0.6
0.9
1.1
8
10
0.5
0.25
0.02
0.01
1
L80
13Cr
0.15
0.22
0.25
1
12
14
0.5
0.25
0.02
0.01
1
C90
1
0.35
1.2
0.25 b
0.85
1.5
0.99
0.02
0.01
T95
1
0.35
1.2
0.25 d
0.85
0.4
1.5
0.99
0.02
0.01
C110
0.35
1.2
0.25
1
0.4
1.5
0.99
0.02
0.005
3
P110
e
0.030 e
0.030 e
4
Q125
1
0.35
1.35
0.85
1.5
0.99
0.02
0.01
a The carbon content for L80 may be increased up to 0.50 % maximum if the product is oil-quenched.
b The molybdenum content for Grade C90 Type 1 has no minimum tolerance if the wall thickness is less than 17.78 mm.
c The carbon content for R95 may be increased up to 0.55 % maximum if the product is oil-quenched.
d The molybdenum content for T95 Type 1 may be decreased to 0.15 % minimum if the wall thickness is less than 17.78 mm.
e For EW Grade P110, the phosphorus content shall be 0.020 % maximum and the sulfur content 0.010 % maximum.
NL = no limit. Elements shown shall be reported in product analysis.

 

octg seamless pipe Mechanical Properties

Group OCTG pipe materials Type Total elongation under load % Yield strength MPa Tensile strength min. MPa Hardness a max. Specified wall thickness mm Allowable hardness variation b HRC
min. max . HRC HBW
1 2 3 4 5 6 7 8 9 10 11
1
H40
0.5
276
552
414
J55
0.5
379
552
517
K55
0.5
379
552
655
N80
1
0.5
552
758
689
N80
Q
0.5
552
758
689
R95
0.5
655
758
724
2
M65
0.5
448
586
586
22
235
L80
1
0.5
552
655
655
23
241
L80
9Cr
0.5
552
655
655
23
241
L80
13Cr
0.5
552
655
655
23
241
C90
1
0.5
621
724
689
25.4
255
≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40
3.0 4.0 5.0 6.0
T95
1
0.5
655
758
724
25.4
255
≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40
3.0 4.0 5.0 6.0
C110
0.7
758
828
793
30
286
≤ 12.70 12.71 to 19.04 19.05 to 25.39. ≥ 25.40
3.0 4.0 5.0 6.0
3
P110
0.6
758
965
862
4
Q125
1
0.65
862
1034
931
b
≤ 12.70 12.71 to 19.04 ≥ 19.05
3.0 4.0 5.0
a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method.
b No hardness limits are specified, but the maximum variation is restricted as a manufacturing control in accordance with 7.8 and 7.9 of API Spec. 5CT.

 

Features for octg line pipe

All OCTG pipe have a standard requirement of dependable hardness. So whether it is OCTG tubing, OCTG pipe or OCTG drill pipe, there is a certain required standard which is always about super hardness. To meet the standard, manganese and chromium are used as the main alloys to confirm the cohesion and durability.

 

octg tubing and casing Grades & Material Selection

Depending on the application, OCTG products could be of various steel grades and material composition. Both are affected by the following attributes and requirements:

  • High Collapse
  • Corrosion Resistant and Sour Services
  • Pressure Resistant 
  • Deep Wells 
  • High Collapse & Sour Service
  • Highly deviated wells 
  • Extended Reach Wells 
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