Casings Specifications

● Material: High-grade carbon steel, API 5CT specification
● Diameter: 4.5″ to 20″ (114.3 mm to 508 mm)
● Wall Thickness: 0.205″ to 0.635″ (5.21 mm to 16.13 mm)
● Grades: H40, J55, K55, N80, L80, P110
● Length: Range 1 (16 ft to 25 ft), Range 2 (25 ft to 34 ft), Range 3 (34 ft to 48 ft)
● Connection Type: API round thread, buttress thread, premium connections
● Coating: Internal and external anti-corrosion coating (as required)
● Pressure Rating: Varies by grade and wall thickness, typically up to 20,000 psi
● Tensile Strength: Varies by grade, typically 55,000 to 125,000 psi
● Application: Oil and gas well casing, geothermal wells, structural and foundation support

CriusDrill is one of the largest casings manufacturers in the industry and stocks a full line of casing made of high-strength steel tubing.

CriusDrill uses top-quality material; our in-house engineers have designed field-tested dual and triple lead threads as well as developed several thread designs to meet individual customers’ needs and industry standards.

CriusDrill is engaged in supplying high-quality casings in China, and it has 25+ years of experience in the deep foundation drilling industry. Our team of skillful workers and experienced engineers guarantees the production of a full range of rotary drilling tools, including casings, Kelly bar, tremie pipes, drill bits, hydraulic pile hammers, pile breakers, and desanders in China.

To provide better service to our clients, we supply our products worldwide to be the best casings suppliers in China. Our team is always ready to support you as soon as possible.

Casing is an Essential Tool for Drilling Rig Projects.

A drilling rig project requiring casings in China would need various casing tools, including double-wall casing tubes, single-wall casing tubes, casing shoes, casing adaptors, and casing connectors. Additionally, extra casing joints, casing screws, and casing teeth are necessary as spare parts.

Casing tubes are an ideal choice for cased bored piles, especially when working in complex soil conditions.

Double Wall Casing Tube

The double wall casing tube features an outer wall thickness ranging from 10-18mm and an inner wall thickness between 8-12mm, depending on the casing size. Reinforcing bars are positioned between the inner and outer walls to enhance durability. To further increase strength, we use ring-casting alloy steel 25CrMo to produce the casing joints, which undergo heat treatment and precise machining.

Single Wall Casing Tube

The single wall casing tube features a wall thickness ranging from 16-30mm, with casing joints having a thickness of 40-60mm, depending on the casing size.

Applications

Both double-wall casing tubes and single-wall casing tubes can be applied to a hydraulic rotary drill rig or casing oscillator.

Function Of Casing

Casing serves several critical functions, which can be summarized as follows:

  • It Provides support for fractured, weak, and vulnerable formations.
  • It Prevents contamination of freshwater zones.
  • It Isolates abnormal pressure zones and lost circulation zones.
  • Facilitates the passage of production fluids; typically, production operations are conducted through tubing run inside the casing.
  • It Supports surface equipment such as blowout preventers and production trees.
  • It allows for the installation of artificial lift equipment for production.
  • Ensures a known borehole diameter to facilitate further operations.

As a leading casings suppliers in China, we offer high-quality solutions to meet all these essential requirements.

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