Chinese Manufacturers Supply Oil/Gas Oil Casing Tubing API 5CT N80-1/Q

• After-sales Service: Support
• Warranty: Support
• Type: Seamless
• Technique: Hot Rolled
• Material: Alloy Steel
• Surface Treatment: Black
• Model NO.: API 5CT N80-1/Q
• Usage: Pipeline Transport, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Length: R1 R2 R3
• Delivery Time: 15~30days
• Tolerance: ±10%
• Thickness: Customized
• Payment Terms: L/C T/T (30%Deposit)
• Transport Package: Bundle, Plastic Bag, Woven Bag, Wooden Case
• Specification: 8-5/8 to 20inch Length: R1 R2 R3 OD: 219.08-508mm
• Trademark: Baowu
• Origin: Shandong
• HS Code: 7304290000
• Production Capacity: 50000 Tons/Year

Product Description

Product Description

Oil casing
Oil casing is a steel pipe used to support the wall of oil and gas Wells to ensure the normal operation of the whole well during the drilling process and after the completion of the well. Each well uses several layers of casing depending on the drilling depth and geology. After casing is run, cement is used to cement the well. Unlike tubing and drill pipe, it can not be reused and is a disposable consumption material. Therefore, the consumption of casing accounts for more than 70% of the total oil well pipe.

Casing can be classified by use into: conduit, surface casing, technical casing, and oil casing.

The API casing is generally used for the borehole wall support in the drilling as well as after the completion of a well, so as to
make sure the smooth running of the drilling process and also the normal procedure of the whole oil well after well completion.
As a result of the advancement in recent years, making use of the product is much more substantial. It is generally utilized in oil,
gas, coal bed methane, water system, thermal electrical power generation, hydropower penstock, thermal electrical power generation,
dredging design, as well as other sectors.

This product generally makes use of smooth steel pipeline as the raw product. Some large diameter and special wall thickness items
make use of straight seam pipeline as the pipeline body. The body should be processed with screw strings at both ends. One end is
linked to the combining, while the other end is equipped with the string protector. Thread as well as coupling link are used between
the casings. In addition, the pipe body of various steel qualities ought to correspond to different couplings.
Production criterion: API Spec 5CT

Chemical Composition

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
	Q125	≤0.35	-------------	≤1.35	≤0.020	≤0.010	≤1.50	≤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	-	-

Product Process

Packaging & Shipping

FAQ

Q1:Can I get samples before order ?
A:Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.
Q2:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q3:What product information do I need to provide?
A:You need to provide the grade, length, width, diameter, thickness, coating and the number of tons you need to purchase.
Q4:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept  third party inspection.
Q5:How do we trust your company?
A:We specialise in steel business for years , headquarter locates in Liaocheng, Shandong province, you are welcome to investigate in any ways, by all means, we have CE and ISO certificate, quality can be guaranteed, the most important point is that we ship enough weight as per the order.