Ultrasonic Tube Overview and content: Ultrasonic tube is the only special application in the market for ultrasonic testing of reliable systems. The basic concept is the use of chilled steel pipe (solid tube wall thick steel pipe without hardness without strength) professional molding, the use of fastener connection, clamp connection, screw connection, etc., in the concrete pouring has a reliable anti-seepage effect.
Ultrasonic tube finished products usually include the formed standard length of 9M, 6M, 3M steel pipe and a connection mode joint connection. A channel can be reserved for the probe head to reach the bottom of the pile base.
First, the use of special hydraulic pliers to connect, do not need to work outside of the preparation, no equipment, simple and quick (faster than the traditional method 5 times times), easy to fixed on the bar cage, not affected by bad weather
Two, may according to the field request own length, no loss.
Third, this product is a patented product, compared with similar products in the market, the tensile strength is higher, to reach more than 3.8 tons (generally other products tensile strength of about 0.3 tons).
Four, professional design, factory before 100% quality control, site detection is convenient.
Five, save the cost, save the preparation time, does not need the mechanic, saves the loss (may according to the customer request to make the different model short tube), is free from the site restriction.
Six, fast, can provide standard tube at any time, within 24 hours to enter the site
Seven, safety, do not need to work on the site for welding.
Note: DF represents the Peak, SZG representative: Ultrasonic inspection Tube, 50, 53 ... represents the outer diameter, I represents the wall thickness, the qy represents the clamp pressure
|Product number||Nominal diameter（mm）||Wall thickness（mm）||length（mm）|
|Appearance||Check whether there are burred, cracked, scabbed, folded, layered, scratched, scuffed, burnt and thin oxide skin with overlap welding defects and staggered welding seams through visual inspection and handfeel. The bending degree is not more than 5mm/m.|
|Tensile test (elongation)||≥14%|
|Flattening Test||When the distance between two flattened plates is 3/4 of outer diameter of the acoustic pipe, cracks cannot be formed.|
|Bending Test||When stuffing is not filled in the acoustic pipe, the bending radius is 6 times that of nominal outside diameter, the bending angle is 120°, and the acoustic pipe cannot be cracked.|
|Hydraulic Test||When the water injection pressure of seals at the two ends of the acoustic pipe is 5MP, the acoustic pipe does not leak.|
|Vortex Damage||The welding seam of the acoustic pipe does not have sand holes and cracks.|
|Sealing Test||Outer pressure P=215S/D, no leakage, no deformation at the interface|
|Inner pressure P=215S/D, no leakage, no deformation at the interface|
|Pull-out Test||It should bear the drawing force of 3,000N at normal temperature. The connection parts can be kept without loose and breaking after 60min continuous actions.|
|Vibration Test||Under the test pressure of 1.2MP, it can continuously vibrate for 100,000 times without any leakage and falling phenomena at the joint.|
|Torque Test||Torsion torque of 120N.m can be kept for 10min without the slip of joints.|
|Hardness Test||The wall hardness of acoustic pipe: HRB≥90|
In the principle of “Reliability, Convenience”, the testing pipe is spliced and hung in the process of manufacturing reinforcing steel bars, then connected and positioned when the reinforcing steel bars are laid, and first positioned in the bottom cage in a welding mode together with the steel reinforcement cage, with the upper part bundled by steel wires (one circle for every 2-3m), to ensure the testing pipe can be positioned vertically, facilitate in pile foundation testing and prevent concrete guide pipes from colliding.
I. Test the fixed length of pipes.
Test the length of pipes according to the length of the steel reinforcement cage; the bottom pipe should be 20-30cm longer than a steel reinforcement bottom cage.
II. Test the installation of the pipe bottom cage.
The bottom pipe of the testing pipe is equipped with a movable clamp, is positioned according to actual construction conditions, and then is welded onto the steel reinforcement cage, to fix the testing pipe, thus preventing the testing pipe from floating upwards and rotating.
III. Test the cage installation in the pipe.
A connection pipe in the testing pipe is mounted after the steel reinforcement cage is molded; the upper point of the testing pipe is flexibly positioned according to U-shaped reinforcing steel bars, and can slide up and down. One end of the socket is positioned by an S-shaped steel reinforcement hook. During installation of the steel reinforcement cage, the S-shaped hook is taken down; the testing pipe slides down, is inserted into the bottom pipe, and is fixed by tightening the nut through a wrench. The middle part is bundled and fixed by iron wires every 2-3m, and the forth.
IV. Test the installation of the pipe top cage.
After the steel reinforcement top cage is installed, all the joints of pipes should be tested completely, to ensure firm tightening. Clear water must be filled in the testing pipe, and finally special seal heads are screwed on, to complete all the operation processes.
V. Test the pipe when the pile foundation is in semi-cage installation.
The testing pipe can be welded and positioned in different sections according to actual conditions, which facilitates in the positioning of steel reinforcement hoops, and can also be installed without a steel reinforcement cage. Compared with other connection joints, it can save about 3 reinforcing steel bars, which is safe and convenient.
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