φ50 Hydraulic Type Sonic Logging Pipe (50mm Clamped CSL Pipe)

The φ50 (50mm OD) Hydraulic Type CSL Pipe is the most widely specified and highly economical solution for standard Cross-hole Sonic Logging (CSL). This pipe features a specialized bell-end socket with an integrated, high-temperature resistant EPDM rubber O-ring. By utilizing a portable hydraulic clamping tool, the joint is permanently compressed in 3 to 5 seconds. This weld-free and thread-free technology creates a high-strength, leak-proof seal, significantly reducing site labor costs and keeping your construction schedule on track.

Key Features & Advantages

Fast Installation Pace: Connect a single joint in just 3 to 5 seconds using a portable clamping tool, achieving an assembly rate up to 10 times faster than traditional field welding.

Zero Weld-On-Site Requirement: Eliminates the necessity of on-site electricity, welding machines, and certified field welders, reducing project utility overhead and hazard risks.

Slurry-Proof Dual Sealing: The combination of hydraulic mechanical steel deformation and the compressed rubber O-ring prevents concrete slurry from entering, ensuring a clean, dry testing channel.

Optimized Standard Size: Designed specifically to fit standard 25mm ultrasonic probes, providing a smooth, unobstructed internal diameter through the joint channel.

Technical Specifications

The φ50 hydraulic press-fit sonic logging pipe is manufactured from high-quality cold-rolled carbon steel:

Parameter	Specification Details
Material	High-Quality Cold-Rolled Carbon Steel
Outer Diameter (OD)	50 mm
Wall Thickness (WT)	0.8 mm to 3.5 mm
Standard Length	3 m, 6 m, 9 m (Customizable)
Connection Method	Hydraulic Press-fit (Hydraulic Joint)
Sealing Material	High-Temperature Resistant EPDM/Rubber O-ring

Quality Assurance & Precision Standards

Hydrostatic Pressure Validation

Every production batch of φ50 pipes is subjected to strict pressure testing to ensure the joint can withstand high external hydrostatic pressures during concrete casting without leakage.

Smooth Internal Seam Finish

The internal weld bead of our cold-rolled steel pipes is carefully smoothed and deburred. This flat internal finish prevents any snagging or scratching of the CSL ultrasonic probes during inspection.

Installation Guide

Insert: Insert the plain, non-socketed end of the upper φ50 pipe fully into the hydraulic socket containing the O-ring.

Align: Position the portable hydraulic clamp jaw directly over the U-shaped groove of the socket joint.

Compress: Activate the hydraulic tool to crimp the joint until the pressure releases automatically, forming a permanent, watertight seal.

Frequently Asked Questions (FAQ)

Q: What is a φ50 Hydraulic Press-fit (Clamped) sonic logging pipe, and what are its primary benefits?ipe, and how do you ensure dimension control?

A: A φ50 Hydraulic Press-fit sonic logging pipe features a specialized socket joint with a built-in rubber O-ring at one end. During site installation, two pipes are sleeved together and crimped tightly using a portable hydraulic clamping tool. The primary benefits include weld-free and thread-free connection, extreme installation speed (averaging only 3-5 seconds per joint), and maximum cost savings on site labor while maintaining perfect alignment.

Q: How does the φ50 press-fit joint prevent cement slurry leakage during concrete pouring?

A: Preventing leakage is critical, as any slurry ingress can block the sonic probe. Our φ50 press-fit sonic logging pipes are engineered with high-performance dual-sealing rubber O-rings inside the socket. When crimped by the hydraulic tool, the steel socket deforms structurally to compress the rubber ring, forming a permanent, tight mechanical seal. The joint can withstand hydrostatic pressures well exceeding standard concrete pouring requirements, ensuring zero slurry leakage.

Q: What standards and dimensional tolerances do your φ50 sonic logging tubes comply with?

A: We manufacture our φ50 sonic logging tubes in strict compliance with international standards such as ASTM A53, EN 10219, and relevant geotechnical test codes for Crosshole Sonic Logging (CSL). We offer standard Outside Diameter (OD) of 50mm with wall thicknesses ranging from 1.0mm to 3.5mm. Our advanced cold-drawing and precision welding lines ensure thickness tolerances are controlled within ±5%, providing a perfectly smooth internal surface for the ultrasonic probes.

Q: Do you supply the necessary hydraulic clamping tools for φ50 installation?

A: Yes, we provide full support for job site operations. We can supply the professional portable hydraulic press clamps (both manual and electric battery-powered options available) together with the corresponding pressing dies matching your purchased 50mm pipe diameter. The tool is extremely user-friendly and requires no professional welding licenses; we provide a simple video instruction guide so your local construction crew can master it instantly.

Q: What end finishes and accessories are included in a complete φ50 sonic logging pipe set?

A: A complete system includes the main tubing with pre-installed press-fit sockets, watertight bottom caps (pre-welded or push-fit to seal the pipe base), and top caps to prevent debris from falling in before testing. To facilitate easy attachment to the rebar cages (reinforcement cages) on site, the pipes feature a smooth surface that can be quickly lashed using standard wire ties or specialized mounting clips.