Carbon Steel API 5CT K55 J55 N80 L80 P110 Pup Joint Coupling Oil Casing Tubing for OCTG

• Customization: Available
• After-sales Service: 24 Hours Online Service
• Warranty: 24 Months
• Type: Seamless
• Technique: Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration
• Section Shape: Round
• Transport Package: Bundling
• Trademark: PMC
• Origin: China

Product Description

 

Permanent Steel Manufacturing Co.,Ltd (PMC) is your premium supplier and processor of specialty seamless steel pipe, high temperature carbon steel grades, low temperature materials - in multiple product forms, including steel plate, bar, tubular and structural forms. In the past, we have been assiduously surpassing our goals step by step in the carbon steel industry. Over the years, perseverance and ardor in our work helped us to carve out a path of success for us and our venerated clients.With state-of-the-art manufacturing processes, contemporary technologies,and proficient services, we consider: offering finest quality-best in class products-at the most advantageous rates, as our forte. 

 

 

 

Sizes:

Out Diameter: 1.315"- 20"
Wall Thickness: 0.133"-0.500"
Length:R1(group1),R2(group2),R3(group3) 

 

Materials & Grades: 

Casing: J55, K55, N80, L80, P110

 

Application:

oil well extracting 

borehole 

borewell

 

Types:

Seamless Casing

ERW Casing

 

Connections:

P(Plain End)

STC (short threads)

LTC (long threads)

BTC (buttress threads)

Premium gas-tight connectors

Non-upset ends (NUE)

External upset ends (EUE)

Premium gas-tight connectors

Others special connectors
 

Chemical compositions of casing pipe

Standard	Grade	Chemical compositions(%)
API SPEC 5CT	J55	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V
	K55	0.34~0.39	0.20~0.35	1.25~1.50	≤0.020	≤0.015	≤0.15	≤0.20	≤0.20	/	/
	N80	0.34~0.38	0.20~0.35	1.45~1.70	≤0.020	≤0.015	≤0.15	/	/	/	0.11~0.16
	L80	0.15~0.22	≤1.00	0.25~1.00	≤0.020	≤0.010	12.0~14.0	≤0.20	≤0.20	/	/
	P110	0.26~0.395	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

 

Mechanical properties of casing pipe

Grade	Type	Total elongation  under load  (%)	Yield strength  (min)Mpa	Yield strength  (max)Mpa	Tensile strength  min Mpa	Hardness  Max (HRC)	Hardness  Max (HBW)
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	-	-
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	-	0.5	621	724	689	25.4	255
C95	-	0.5	655	758	724	-	-
T95	-	0.5	655	758	724	25.4	255
P110	-	0.6	758	965	862	-	-
Q125	All	0.65	862	1034	931	-	-

 

 

Casing Pipe Manufacturing Process:

Steel ingot heating → hydraulic punching → reheating → extension → periodic rolling → reheating → sizing → cooling → straightening → pipe cutting → inspection

1. An annular heating furnace is required for ingot heating;
2. Punching and reheating with hydraulic press;
3. The oil casing plant uses a two-roller guide plate extension machine for extension;
4. Re-use a disc heating furnace for periodic rolling, and use a non-entry furnace for reheating, cooling, straightening, pipe cutting, and inspection.
Color Codes for API 5CT Casing and Tubing:

 

PMC has always inculcated and followed sten quality standards for all of its manufacturing processes. All the materials used by PMC are of premium quality and compatible with latest machineries and manufacturing technologies. The technical and commercial quality guidelines of PMC are set to high standards. A quality control team supervises quality assurance and control aspects along with the entire process system by recognizing and associating with the quality circle. The quality control tests are conducted regularly in order to maintain a consistent and uniform product quality. 

Tests of Oil Casing & Tubing
Chemical Component Analysis
Mechanical Properties - Elongation, Yield Strength, Ultimate Tensile Strength
Technical Properties - DWT Test, Impact Test, Blow Test, Flattening Test
X-ray Test
Exterior Size Inspection
Hydrostatic Test





FAQ

Q1. What are your company's main products ?

A2: Our main products are carbon steel seamless pipe, pipe fittings(flange,elbow, tee, reducer,nipple etc.), and sheets, pipes, coils, strips, bars and channels.

 

Q2. What are the advantages of your company ?

A2: Offering finest quality-best in class products-at the most advantageous rates, as our forte.

Q3. How do you control quality ?
A3: A quality control team supervises quality assurance and control aspects along with the entire process system by recognizing and associating with the quality circle. The quality control tests are conducted regularly in order to maintain a consistent and uniform product quality.

Q4. How many coutries you already exported ? 

A4: Exported to more than 50 countries mainly from Middle East, Russia, United States, Canada, Italy, Germany, Australia, Egypt, Japan, Indonesia, Bangladesh, Turkey, India, etc.

Q5. Can you provide sample ? Do you support OEM ?

A5: Yes. Small samples in store can be provided for free. Customized samples will take about 2-3days.

Q6: What's your payment terms ?
A6: By T/T(30% deposit in advance, balance 70% before shipment),, L/C after sight 30~120 days. Western Union, Paypal, or Trade Online.