Tianjin Bohai Metal Corporation

API 5CT seamless casing tubing

API casing pipe is produced according to the API 5CT standard. It is most often used in underground construction projects to encase or protect utility lines from being damaged.

Steel Pipe

Seamless Steel Pipe

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Commodity name: API 5CT seamless casing tubing

API casing pipe is produced according to the API 5CT standard. It is most often used in underground construction projects to encase or protect utility lines from being damaged.

Product introduction

API casing pipe is produced according to the API 5CT standard. It is most often used in underground
construction projects to encase or protect utility lines from being damaged.

Product Name	SEAMLESS STEEL PIPE
Material	16Mn,10#,20#,Q235,Q345 ST52 A106GRB etc
Standard	ASTM A500 GRA GRB ,ASTM A53GRB ETC .
Outer Diameter (OD)	1/8”-48”
Length	6-12M Length per piece pipe .
Wall Thickness (WT)	2.5-200MM
Package	In bundles, Painting, Beveled edges, plastic caps ends, or as buyer's request.

Product Description

production name	API 5CT grade N80 steel casing pipe price
OD size (in)	4-1/2" ~ 20"
grade	J55/K55/N80/L80/P110,
thread type	LC,SC,BC
Leighths	R1 (4.88mtr-7.62mtr) R2 (7.63mtr-10.36mtr) R3 (10.37mtr-14.63mtr)
heat treatment	Normalized,Quencher+Temper

It is widely used in the cementing projects to serve as the structural retainer for the wall of oil and gas
wells or wellbore. It is inserted into a well bore and cemented in place to protect both subsurface formations
and the wellbore from collapsing and allow drilling fluid to circulate and extraction to take place.

The main steel grade of API 5CT: API 5CT J55, API 5CT K55, API 5CT N80, API 5CT L80, API 5CT P110. This
International Standard 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 by this International Standard, the sizes, masses, wall thicknesses, grades
and applicable end finishes are defined. This International Standard may also be applied to tubulars with connections
not covered by ISO/API standards.

Technical data

API 5CT P110/L80/N80/K55/J55 Casing Steel Pipe Chemical Composition

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

API 5CT P110/L80/N80/K55/J55 Casing Steel PipeMechanical Properties

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