Factory Provided Industrial Hot Sellling Stainless Steel Pi Tape Gauge for FRP Pipe Diameter Measure

Product Description

1.Introduction
The PI TAPE used to accurately measure the average diameter of a circular workpiece such as pipes.
1. The diameter ruler consists of an elastic steel strip. The two ends are engraved with a main and an auxiliary ruler respectively. The minimum graduation value of the main ruler is 0.5mm or 1mm;
The minimum scale value of the sub-scale is 0.02mm, 0.05mm, 0.01mm, 0.1mm, etc.
2. When using, the diameter ruler is wound around the workpiece for one week. The average diameter of the device under test can be directly read by the cursor reading method.
Third, the characteristics of the diameter of the ruler (compared with the big ruler)
1. High precision: Since the diameter ruler measures the diameter through the circumference, the scribe line error at the production ruler can be reduced by π times and reflected on the measurement result. Therefore, in large diameter measurement of φ500mm or more, the accuracy is higher than that of the vernier caliper. In measurements above φ1000mm,
This advantage is particularly outstanding.
2. When measuring steel parts with a diameter ruler, it is not affected by the temperature of the workpiece. This is because the diameter is very thin and the measurement will be in a short time.
It is isothermal with the device under test, and because of their thermal expansion coefficient is very close, basically overcome the influence of temperature.
3. In the measurement of large diameter and extra large diameter, the auxiliary bridge---magnetic bridge (patent) can be operated by one person and one at a time.
4. Measuring thin-walled parts is not easy to cause deformation of the workpiece.
5. Easy to carry and keep.
6, the price is low.
7. Disadvantages: The reading cannot be locked; the geometric deviation such as ellipticity cannot be measured.
Fourth, the use of the diameter ruler
For measurements above φ500mm, it is recommended to use an accessory - magnetic bridge (patented product). Place the magnetic bridge on the surface of the workpiece, visual inspection, etc.
After the height, the diameter ruler can be measured from the bottom of the bridge (see the back view). When measuring, double-handle the ruler back and forth to make it work
After the surface of the piece slides, the tension can be read by holding more than 20 Newtons. (For very large workpieces, there will be a small amount of error due to the force measurement.
difference. To this end, I have specially developed a special force gauge for the diameter gauge to eliminate the measurement error. ) can also be used for fine φ1200mm or less
Not very high internal diameter measurement. Simply turn the outer diameter ruler over and use the reading value plus 0.5mm.
Five, the use of the diameter of the precautions
1. Wipe the surface of the object before measurement.
2. Do not spread the diameter ruler on the ground to avoid distortion.
3. When measuring non-steel parts such as copper and aluminum, in order to overcome the temperature influence, the device to be tested should be kept at 20 °C.
Sixth, maintenance, transportation, verification cycle
1. After the measurement, store the diameter scale anti-rust oil in the ruler box.
2. It is necessary to prevent rain and moisture during transportation and storage. It is strictly forbidden to mix with corrosive materials.
3. The calibration period of the diameter ruler is one year.
7. For the diameter of various special needs, special order can be ordered.

measurement range φ	Tolerance	measurement range φ	Tolerance
50 - 100	± 0.03	2100- 2300	±0.07
100 - 200		2300 - 2500
200 - 350		2500 - 2750
350 - 500		2750 - 3000
500 - 700	± 0.04	3000 - 3250	±0.09
700 - 900		3250 -3500
900 - 1100		3500 - 3750
1100 - 1300	± 0.06	3750 - 4000
1500 - 1700		4000 - 4250	±0.12
1300 - 1500		4250 - 4500
1700 - 1900		4500 - 4750
1900 - 2100		4750 - 5000
		5000 plus

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