API Spec 5CT Casing and Tubing

API Spec 5CT Casing and Tubing

api 5ct, API 5CT J55, API 5CT K55, API 5CT L80, API 5CT N80, API 5CT P110, API SPEC 5CT, casing, steel pipes, Tubing

API Spec 5CT Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells.

The main steel grade of API 5CT:

• API 5CT J55
• API 5CT K55
• API 5CT N80
• API 5CT L80
• API 5CT P110

Casing pipe end thread type

The International Standard specifies the technical delivery conditions for steel pipes (casing, tubing, plain end casing liners and pup-joints) and accessories. It is applicable to the following connections in accordance with ISO 10422 or API Spec 5B:

- short round thread casing (STC);
- long round thread casing (LC);
- buttress thread casing (BC);
- extreme-line casing (XC);
- non-upset tubing (NU);
- external upset tubing (EU);
- integral joint tubing (IJ).

For such connections, this International Standard specifies the technical delivery conditions for couplings and thread protection.
For pipes covered, the sizes, masses, wall thicknesses, grades and applicable end finishes are defined.
It may also be applied to tubulars with connections not covered by ISO/API standards.

Chemical Compositions(%) of API 5CT

Grade	C≤	Si≤	Mn≤	P≤	S≤	Cr≤	Ni≤	Cu≤	Mo≤	V≤	Als≤
API 5CT J55	0.34-0.39	0.20-0.35	1.25-1.50	0.020	0.015	0.15	0.20	0.20	/	/	0.020
API 5CT  K55	0.34-0.39	0.20-0.35	1.25-1.50	0.020	0.015	0.15	0.20	0.20	/	/	0.020
API 5CT N80	0.34-0.38	0.20-0.35	1.45-1.70	0.020	0.015	0.15	/	/	/	0.11-0.16	0.020
API 5CT  L80	0.15-0.22	1.00	0.25-1.00	0.020	0.010	12.0-14.0	0.20	0.20	/	/	0.020
API 5CT J P110	0.26-035	0.17-0.37	0.40-0.70	0.020	0.010	0.80-1.10	0.20	0.20	0.15-0.25	0.08	0.020

Mechanical Properties of API 5CT

Steel Grade	Yield Strength (Mpa)	Tensile Strength (Mpa)
API 5CT J55	379-552	≥517
API 5CT K55	≥655	≥517
API 5CT N80	552-758	≥689
API 5CT L80	552-655	≥655
API 5CT P110	758-965	≥862

For pipes covered by this International Standard, the sizes, masses, wall thicknesses, grades and applicable end finishes are defined.

Oil Country Tubular Goods

Oil Country Tubular Goods (OCTG)

Oil country tubular goods (OCTG) is a family of seamless rolled products consisting of drill pipe, casing and tubing subjected to loading conditions according to their specific application. (see Figure 1 for schematic of a deep well):

• Drill pipe is heavy seamless tube that rotates the drill bit and circulates drilling fluid. Pipe segments 30 ft (9m) long are coupled with tool joints. Drill pipe is simultaneously subjected to high torque by drilling, axial tension by its dead weight, and internal pressure by purging of drilling fluid. Additionally, alternating bending loads due to non-vertical or deflected drilling may be superimposed on these basic loading patterns.
• Casing pipe lines the borehole. It is subject to axial tension by its dead weight, internal pressure by fluid purging, and external pressure by surrounding rock formations. Casing is particularly exposed to axial tension and internal pressure by the pumped oil or gas emulsion.
• Tubing is pipe through which the oil or gas is transported from the wellbore. Tubing segments are generally around 30 ft [9 m] long with a threaded connection on each end.

Typical OCTG manufacturing processes include (all dimensional ranges are approximate)

• Tubing Pipe - Seamless Steel Tubing manufactured to API 5CT Specification Latest Edition, EUE Threaded and Coupled
• Casing Pipe - Seamless Steel Casing manufactured to API 5CT Specification Latest Edition, Plain End
• Carbon and Alloy Line Pipe, Welded (60” O.D. and greater), Seamless (up to 24” O.D.), High-pressure and Low-temperature; (ASTM A106, API grades X70 and higher)
• API Pipe Couplings

ASTM A513 Mechanical Tubing

ASTM A513 Mechanical Tubing

ASTM A513 Mechanical Tubing

astm a513, ASTM A513 1010, ASTM A513 1020, ASTM A513 1026, ASTM A513 4130, mechanical tubing, Seamless tube, Tubing

ASTM A513-08 Standard Specification for Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing.

ASTM A513-08 Standard specification covers round, square, rectangular, and special shape tubing. Optional supplementary requirements are provided and when desired, shall be so stated in the order.

Main grade:

• ASTM A513 1010
• ASTM A513 1020
• ASTM A513 1026
• ASTM A513 4130

Size range of round Electric-Resistance-Welded tubing:

Type(ERW)	Size Range (Round Tubing)
Hot-Rolled Steel	outside diameter from 1/2
	to 15 in. (19.0 to 381.0 mm)
	wall from 0.065 to 0.650 in.
	(1.65 to 16.50 mm)
Cold-Rolled Steel	outside diameter from 3/8to 12 in.
	(9.92 to 304.8 mm)
	wall from 0.022 to 0.134 in. (0.71
	to 3.40 mm)

The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

Grade and Chemical Composition(%) of ASTM A513:

Grade	C	Mn	P(max)	S(max)	Si	Cr	Mo
ASTM A513 1010	0.08-0.13	0.30-0.60	0.035	0.035	-	-	-
ASTM A513 1020	0.17-0.23	0.30-0.60	0.035	0.035	-	-	-
ASTM A513 1026	0.22-0.28	0.60-0.90	0.035	0.035	-	-	-
ASTM A513 4130	0.28-0.33	0.40-0.60	0.035	0.04	-	-	-

Mechanical Properties of ASTM A513:

Grade	Tensil strength(Mpa) ≥	Yield strength(Mpa) ≥	Elongation% ≥	RB, ≥
ASTM A513 1010	379	310	12	68
ASTM A513 1020	448	379	10	75
ASTM A513 1026	517	448	10	80
ASTM A513 4130	621	552	10	87

ASTM A519 carbon and alloy steel mechanical tubing

ASTM A519 carbon and alloy steel mechanical tubing

ASTM A519 carbon and alloy steel mechanical tubing

ASTM A519, ASTM A519 1020, ASTM A519 1025, ASTM A519 1035, ASTM A519 1045, ASTM A519 4130, ASTM A519 4140, mechanical tubing, seamless tubing, Tubing 

ASTM A519 specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished.

Application:

• For mechanical engineering
• For mechanical and pressure use,and also for transporting steam,water,gas and etc.

Size range(mm):

• Out diameter:10-324mm
• Wall Tickness:1-30mm
• Length:14000mm max

Grade:

• ASTM A519 1020
• ASTM A519 1025
• ASTM A519 1035
• ASTM A519 1045
• ASTM A519 4130
• ASTM A519 4140

Pipe and Tube Specifications

This specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished. The steel used in the mechanical tubing may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The seamless tubing is a tubular product made without a welded seam. It is usually manufactured by hot working steel, and if necessary, by subsequently cold finishing the hot-worked tubular product to produce the desired shape, dimensions and properties. The tubes shall be furnished in the following shapes: round, square, rectangular and special sections. Heat analysis shall be made to determine the percentages of the elements specified. If secondary melting processes are used, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt. The tubing shall be coated with a film of oil before shaping to retard rust when specified
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

Grade and Chemical Composition (%) of ASTM A519:

Grade	C	Mn	P≤	S≤	Si	Cr	Mo
ASTM A519 1008	≤0.10	0.30-0.50	0.04	0.05	-	-	-
ASTM A519 1010	0.08-0.13	0.30-0.60	0.04	0.05	-	-	-
ASTM A519 1018	0.15-0.20	0.60-0.90	0.04	0.05	-	-	-
ASTM A519 1020	0.18-0.23	0.30-0.60	0.04	0.05	-	-	-
ASTM A519 1025	0.22-0.28	0.30-0.60	0.04	0.05	-	-	-
ASTM A519 1035	0.32-0.38	0.60-0.90	0.04	0.05
ASTM A519 1045	0.43-0.50	0.60-0.90	0.04	0.05
ASTM A519 1026	0.22-0.28	0.60-0.90	0.04	0.05	-	-	-
ASTM A519 4130	0.28-0.33	0.40-0.60	0.04	0.04	0.15-0.35	0.80-1.10	0.15-0.25
ASTM A519 4140	0.38-0.43	0.75-1.00	0.04	0.04	0.15-0.35	0.80-1.10	0.15-0.25

Mechanical Properties of ASTM A519 :

Grade	Condition	Ultimate Strength		Yield Strength		Elongation	Rockwell Hardness
		Ksi	Mpa	Ksi	Mpa	%	B scale
ASTM A519 1020	HR	50	345	32	221	25	55
	CW	70	483	60	414	5	75
	SR	65	448	50	345	10	72
	A	48	331	28	193	30	50
	N	55	379	34	234	22	60
ASTM A519 1025	HR	55	379	35	241	25	60
	CW	75	517	65	448	5	80
	SR	70	483	55	379	8	75
	A	53	365	30	207	25	57
	N	55	379	36	248	22	60
ASTM A519 1035	HR	65	448	40	276	20	72
	CW	85	586	75	517	5	88
	SR	75	517	65	448	8	80
	A	60	414	33	228	25	67
	N	65	448	40	276	20	72
ASTM A519 1045	HR	75	517	45	310	15	80
	CW	90	621	80	552	5	90
	SR	80	552	70	483	8	85
	A	65	448	35	241	20	72
	N	75	517	48	331	15	80
ASTM A519 4130	HR	90	621	70	483	20	89
	SR	105	724	85	586	10	95
	A	75	517	55	379	30	81
	N	90	621	60	414	20	89
ASTM A519 4140	HR	120	855	90	310	15	100
	SR	120	855	100	689	10	100
	A	80	552	60	414	25	85
	N	120	855	90	621	20	100