bridge using pc strand

Low relaxation pc strand

ISO 9001:2008, ISO14001:2004 Qualified ;
Low relaxation PC strand application for large-span bridges on railways and highway,rock-soil anchoring project,
multi-story industrial buildings,stadiums,coal mines,domes for nuclear power stations and etc.
Manufacturer comply to standard ASTM A416, BS5896, AS1311, JISG3536, ISO6934, EN10138

Low Relaxation PC Strand

Strand solutions to common problems

The strand Equipment Solutions to Common Problems

Testing machine less than the rated test force:

1) delivery valve jamming of foreign body;

2) hydraulic system for leaks.


1) open the cleaning delivery valve, such as the spool the nap is available buds cream ground to smooth.

2) the leaks tighten or replace it with a new gasket.

2, jaw slippage in the stretching process leads to the specimen nipper reasons:

At present, most of the testing machine used for the quality control of the construction site, specimen rebar in the drawing process a large number of oxide, iron fall into the jaws card caused by the sliding surface between the plate and the beams caused the death of the slide the increased resistance is the main cause of the failure.


1) Remove the jaws card board;

2) with a file or rag grinding strained parts of the sliding surface;

3) the transfer mixture coated graphite and butter. Replace the the jaws card board on the line.

3, the mobile beam down the poor in the troubleshooting of the electrical failure reasons:

1) screw base hole insufficient lubrication or foreign objects blocking the card;

2) the lower part of the screw nut locking screw loose.


1) Remove the the lower screw nut, start the pump, the piston screw top 150 mm, cleaning, lubricating the installation;

2) Check and replace the screw lock.

4 universal testing machine manual clamp oral folder could not problem, clamp method.

According to the length of the specimen adjust on the lower jaw distance, the upper jaw to grip the specimen;

Start the pump, unscrew the delivery valve 2 laps;

3 Raise the lower jaw lever by hand, grip the specimen and 5-10 seconds.

PC Strand Application

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PC Wire and Strand Specialist

PC 2-wire strand,   PC 3-wire Strand,

PC 7-wire strand,   PC 19-wire Strand,

Unbonded PC Strand,   PC wire Manufacturer

Contact us

Add: daqiuzhuan industry area Jinghai,Tianjin 301605,China

TEL:0086-22-2955681 FAX:0086-22-2639851