Oil casing steel pipe define

- Mar 15, 2019-

(1) definition: oil casing is the steel pipe used to support the oil and gas well wall to ensure the normal operation of the whole well during the drilling process and after completion.Each well USES several layers of casing, depending on drilling depth and geology.Cement should be used after casing goes down well, it is different with tubing, drill pipe, cannot be reused, belong to one-time consumption material.As a result, casing accounts for more than 70 percent of all well tubing consumption.Casing can be divided into: pipe, surface casing, technical casing and reservoir casing.

(2) classification: different types of casing used in oil production: surface casing -- protecting the well from contamination by shallow water and gas, supporting wellhead equipment, and maintaining the weight of other casing layers.Technical casing - separate different layers of pressure to allow drilling fluid to flow normally and to protect the production casing for the installation of blowout preventer, leak preventer and liner.Reservoir casing (production casing) - the removal of oil and gas from a subsurface reservoir to protect the well and to separate drilling mud.The casing diameter is usually 114.3 mm to 508 mm.

Product Description

1. Material: J55, K55, L80, N80, P110, H40, M65, C90, C95, T95, Q125, V150 etc.

2. Technique: Hot Rolled

3. Standard: API 5CT

4. Certification: ISO9001-2008

Product Name
Carbon Steel API Spec 5CT Oil Casing Pipe
Carbon Steel 
Hot Rolled
Out Diameter (OD)
Wall Thickness (WT)
R1 (5.49-6.71m), R2 (8.23-9.14m), R3 (11.58-13.72m) or as customer's requirements
BTC, STC, LTC, NUE, EUE, VAM, BU or no thread
Surface Treatment
2PE, 3PE, Black painted, anti-corrosion oil or as customer's requirement.
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
1. Packed in waterproof plastic bags
2. Big OD: in bulk
3. Small OD: packed by steel strips
4. According to customer's requirements

Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.

CSPG  has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation. 

We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.

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Q: Are you trading company or manufacturer ?

A: We are factory.

Q: How long is your delivery time?

A: Generally it is 10-15 days if the goods are in stock. or it is 20-40 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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