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API 5CT Steel Pipe

API is an acronym for the American Petroleum Institute and is considered the most authoritative and comprehensive principle in the oil and gas industry. API 5B and API 5CT are mainly used for oil casing. API 5CT oil casing can be divided into seamless steel pipe and welded steel pipe.

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API 5CT Steel Pipe

Product Description

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Product Description

API 5CT is a standard technical specification of steel pipes for casing and tubing in oil or gas industries. It can be used in oil or gas drilling and conveying. Commonly used oilfield API-5CT casing steel grades are J55, K55, N80-1, N80Q, P110. Casings are mostly used in oil well drilling. According to the API-5CT standard, pipes can be divided into STC (short thread), LTC (long thread) and BTC (support thread) and their joints.

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Product Parameters

PRODUCT NAME	API 5CT Steel Pipe
STANDARD	EN/DIN/JIS/ASTM/BS/ASME/AISI etc.
OUTER DIAMETER	Seamless : 1/4"-36"	Welded:21.3mm-3620mm
	Round Tube : 1/2"-10"	Square Tube/Rectangular Tube:15x15mm-400x600mm
WALL THICKNESS	Seamless : 1.25mm-50mm	Welded: 1.65mm-65mm
TECHNIQUE	Hot rolled (HR)or Cold rolled (CR)
GRADES	10# 20# 35#45# 50# 60#Q345B Q345C Q345D Q345E,Q235B Q235R Q355B ST12 ST37 ST52
LENGTH	3-12 meters, Support customization
SURFACE PROCESS	Bright,Polished,Black
SERVICES	Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

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Chemical Composition

Grade	C≤	Si≤	Mn≤	P≤	S≤	Cr≤	Ni≤	With:	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	1.25-1.70	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 5CTJP110	0.26-035	0.17-0.37	0.40-0.70	0.020	0.010	0.80-1.10	0.20	0.20	0.08	0.020

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Mechanical Properties

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

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Scope of Application

API 5CT oil casing is mainly used to transport oil, natural gas, coal gas, water and other liquids, gases.

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Product Advantages

PRODUCTION ADVANTAGES

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FAQ

FAQs

Q1:Can you send samples?

A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?

A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:What ports of shipment are there?

A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?

A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5：Do you provide custom made Products service?

A:Prices various according to periodic price changes of raw materials.
Q6:What are the certifications for your products?

A:We have ISO 9001, MTC, third parties’ inspections are all available such BV ect.
Q7:Can I go to your factory to visit?

A:Of course, we welcome customers from all over the world to visit our factory.
Q8:How long does your delivery time take?

A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q9: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 and customers can appoint third parties to inspect the products before loading too.
Q10:How to pack the products?

A: Standard export sea-worthy packaging, the inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion and various climate changes during ocean transportation.