The specifications of sonic logging pipes are usually expressed in the form of outer diameter × wall thickness. The common ones are as follows:

Clamp-type sonic logging pipe:

50 series: such as 50×0.8, 50×0.9, 50×1.0, 50×1.1, 50×1.2, 50×1.3, 50×1.4, 50×1.5, 50×1.8, etc., suitable for cast-in-place piles with different pile diameters and engineering requirements.

54 series: 54×1.0, 54×1.1, 54×1.2, 54×1.3, 54×1.4, 54×1.5, 54×1.8, etc. Compared with the 50 series, the outer diameter is slightly larger and suitable for cast-in-place piles with some special requirements.

57 series: 57×1.0, 57×1.1, 57×1.2, 57×1.3, 57×1.4, 57×1.5, 57×1.8, etc., are often used for large cast-in-place piles or those with high requirements for the strength of the acoustic logging pipe.

Spiral acoustic logging pipe:

50 series: 50×1.5, 50×1.8, 50×2.0, 50×2.2, 50×2.5, 50×2.75, 50×3.0, 50×3.5, etc., are the more commonly used specifications in spiral acoustic logging pipes.

54 series: 54×1.5, 54×1.8, 54×2.0, 54×2.2, 54×2.5, 54×2.75, 54×3.0, 54×3.5, etc., are suitable for the detection of some large cast-in-place piles.

57 series: 57×1.5, 57×1.8, 57×2.0, 57×2.2, 57×2.5, 57×2.75, 57×3.0, 57×3.5, etc., which are more suitable for special projects or cast-in-place piles with high detection accuracy requirements.

Sleeve type sonic logging pipe:

Common models are 57×1.8, 57×2.0, 57×2.2, 57×2.5, 57×2.75, 57×3.0, 57×3.5, etc. This type of sonic logging pipe is connected by welding, which has high requirements for construction technology, but has relatively good sealing and stability.

Socket type sonic logging pipe:

Common models are 57×1.8, 57×2.0, 57×2.2, 57×2.5, 57×2.75, 57×3.0, 57×3.5, etc. This type of sonic logging pipe has a more complicated connection method, high requirements for processing technology, and high cost. It is mainly used in Southeast Asia and foreign exports.

In addition, the length of the sonic logging pipe is generally 3m, 6m, 9m, 12m, etc., and other lengths can be customized according to the requirements of use. In actual applications, it is necessary to select the appropriate specifications and models of sonic logging pipes according to specific engineering requirements and geological conditions.