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Api 5ct Series Casing - China

price: contact company for price

Origin: China

Brand Name: JST

Grade: H40, J55, K55, N80, L80, C90, T95, P110, Q125

Outer Diameter: 4-1/2" to 13-3/8"

Usage API casing is widely applied in extracting petroleum and gas. It is typically used to enclose and surround a carrier pipe that is installed in the center of this pipe. This pipe is often used in underground construction projects to encase or protect utility lines from being damaged.

API casing is a type of steel pipe used for supporting the wall of oil and gas well. It can ensure normal running of wells whenever in the drilling process or after drilling. According to different drilling depths and geological conditions, each well uses several layers of steel casing pipes. When it is used under the well, we often use cement to achieve well cementation. Different from tubing and drill pipe, API casing is a kind of one-time consumable material so it can not be reused. The total consumption of casing occupies over 70% of the whole oil well pipe. There are mainly five end processing forms for steel casing pipe, covering plain end, short round thread, long round thread, buttress thread and special thread. Our buttress thread casing (BTC) is very popular at home and abroad.

Classifications of Steel Casing Pipe

1. According to usage, API casing can be divided into guide pipe, surface casing, intermediate casing and oil-string casing.

2. We are able to offer petroleum casings in different grades, such as H40, J55, K55, N80, L80, C90, T95, P110, Q125, etc.

3. JST can also produce some special steel casing pipes, such as anti-H2S corrosion casing , CO2 corrosion resistant casing, collapse resistant casing, ultra high-strength casing, etc.


Company Contact:


  • Phone: 8651086162910

  • Address: No.709, Zhencheng Road, Lingangxincheng, Jiangyin , Jiangyin,Wuxi City, China

  • Email: Email


Published date: March 5, 2014 -

  • Business Description: Jiangyin Changjiang Steel Tube Making Factory is founded in 1984,

    occupying the construction area of 600, 000 m2, fixed assets of 2.5

    billion yuan and over 2000 employees. With registered capital of 100

    million RMB, JST has become a professional manufacturer of seamless

    steel pipes and various special pipes in China. The main production

    equipment includes Φ76 perforated pipe mill, 4 sets of Φ50

    puncher units, 28 sets of 5 120 tons drawing machines, Φ110 Accu

    Rolling pipe mill, Φ140 Assel pipe mill, Φ273 Diesel pipe

    mill, two heat treatment production lines, a dedicated steel tube

    processing line for petroleum service, and a drill pipe processing line.

    We can provide custom seamless steel pipes according to customers'

    specific requirements.

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