OCTG API 5CT K55 Tubing for Oil Well

IMRI’s K55 tubing, made of high strength carbon steel, meets the strict API 5CT standard. With a yield strength of 379 ~ 552 MPa, it can withstand high pressure oil well environments.

Product Detail

Established in 1954, the factory has an annual capacity of up to 10 million tons. With five oil casing production lines, it can provide oil casing with OD 60.3mm-114.3mm, which strictly conforms to API 5CT standard. According to API 5B,we can provide BTC/LTC/STC threaded connections and equipped with Premium Threaded.

Manufacturing Process

API 5CT K55 is a steel pipe made by either a seamless process or an EW welding process.

Common EW processes include ERW and EFW.

ERW (Electric Resistance Welding) is typically used for tubes with thinner walls, while EFW (Electrofusion Welding) is used for tubes with thicker walls, which are able to withstand higher pressures.

Coupling materials, coupling blanks and coupling materials must be manufactured using a seamless process.

Quick Details

Standard:

API 5CT/5B

Grade:

K55

Thickness:

2.9-60mm

section shape:

Round

Outer Diameter:

Ф60.3-114.3

Place of origin:

Baotou, China(Mainland)

Function:

Transportation of oil and gas

Technique:

Hot Rolled, Seamless

Certification:

API 5CT/5B

Surface Treatmen:

According to customers request

Alloy Or Not:

Type:

EU NU

Supply Ability:

( 180.0000 )Ton/Tons per year

Installation Position:

Center of casing cavity

Sealing Pressure:

≥5,000 psi

Brand:

Baotou steel

Application:

Medium and low pressure oil and gas Wells

Risk of failure:

Corrosion Perforation; Thread Leakage; Wax Plugging

Chemistry Component

Grade	C		Mn		Mo		Cr		Nb	Ni	Cu	P	S	Si
Grade	min	max	min	max	min	max	min	max	max	max	max	max	max	max
J55	—	—	—	—	—	—	—	—	—	—	—	0.030	0.030	—
N80-1	—	—	—	—	—	—	—	—	—	—	—	0.030	0.030	—
N80Q	—	—	—	—	—	—	—	—	—	—	—	0.030	0.030	—
L80 – 1	—	0.43^a	—	1.90	—	—	—	1.50	—	0.25	0.35	0.030	0.030	0.45
L80 – 9Cr	—	0.15	0.30	0.60	0.90	1.10	8.00	10.0	—	0.50	0.25	0.020	0.010	1.00
L80 – 13Cr	0.15	0.22	0.25	1.00	—	—	12.0	14.0	—	0.50	0.25	0.020	0.010	1.00
C90	—	0.35	—	1.20	0.25^b	0.85	—	1.50	—	0.99	—	0.020	0.010	—
P110	—	—	—	—	—	—	—	—	—	—	—	0.030^e	0.030^e	—

Tensile test requirements

Grade	Total Elongation Under Load %	Yield Strength MPa		Tensile Strength min MPa
Grade	Total Elongation Under Load %	min	max	Tensile Strength min MPa
J55	0.5	379	552	517
N80-1	0.5	552	758	689
N80Q	0.5	552	758	689
L80 – 1	0.5	552	655	655
L80 – 9Cr	0.5	552	655	655
L80 – 13Cr	0.5	552	655	655
N80-1	0.5	552	655	655
C90	0.5	621	724	689
P110	0.6	758	965	862

Color Discrimination

Grade	Type	Straps for products longer than 1.8 meters Quantity and color	Coupling color
Grade	Type		The whole coupling	Brand
H40		No belt or black belt, to be selected by the manufacturer	not have	Same as for the pipeline
J55		A sea of green	Bright green	not have
K55		Two emerald green	Bright green	not have
N80	1	One red	red	not have
N80	Q	One is red, the other emerald green	red	green
R95		One brown	brown	not have
L80	1	One red, one brown	red	One brown
L80	3Cr	One red and one white	red	One white
L80	9Cr	One red, one brown, two yellow	not have	Two yellows
L80	13Cr	One red, one brown and one yellow	not have	One yellow
C90		A purple one	purple	not have
T95		One silver	silvery	not have
C110		One white, two brown	white	Two brown
P110		One white	white	not have
Q125		One orange	orange	not have

Packaging & Delivery

· Thread: Screwing Plastic thread retainer + applying thread grease
· Pipe End: Covered HDPE crash cap (embedded foam cushion)
· Packing: Steel strapping in hexagonal bundles or as per customer’s request .(as pictures)

Packaging & Shipping

· Minimum order quantity: 5 tons
· Price: FOB at Xin’gang port in Tianjin or CIF or CFR
· Payment: 30% deposit in advance, the balance against the copy of B/L; or 100% L/C, etc
· Lead Time: within 10-25 workdays normally
· Sample: Free sample is available.