"How to measure the wall thickness of HDPE double-wall corrugated pipe

HDPE double-wall corrugated pipe is a commonly used plastic pipe. Its wall thickness is one of the key indicators to measure the quality of the product, which is directly related to the ring stiffness, pressure resistance and service life of the pipe. Accurate measurement of wall thickness is of great significance to ensure the quality of the project and the safe operation of the pipeline system. As a well-known brand in the industry, AD Pipe always puts product quality first. The following is a detailed introduction to the measurement method of HDPE double-wall corrugated pipe wall thickness.

When measuring the wall thickness of HDPE double-wall corrugated pipe, the commonly used tools are the wall thickness micrometer or vernier caliper. These tools have high accuracy and can meet the measurement needs. Before measuring, it is first necessary to ensure that the measured part of the pipe is clean and free from oil stains, impurities or obvious damage, so as not to affect the accuracy of the measurement results. At the same time, the product manual of the pipe should be carefully read to understand the standard wall thickness requirements of the HDPE double-wall corrugated pipe of this specification, so that subsequent comparison can be carried out.

For HDPE double-wall corrugated pipe, due to its structural characteristics, special attention needs to be paid to distinguish between the inner wall and the outer wall when measuring the wall thickness. The commonly referred to wall thickness refers to the nominal wall thickness of the pipe, that is, the average thickness of the pipe wall. When measuring with a caliper, the measuring claw of the caliper should be placed smoothly on the cross section of the pipe to ensure that the measuring claw is in close contact with the inner and outer walls of the pipe and is perpendicular to the axis of the pipe. For the crest and trough parts of the corrugated pipe, the measurement should be carried out separately, because the wall thickness of these two parts may be different, and the data needs to be

The specific measurement steps are as follows:

The first step is to select the appropriate measurement position. In order to ensure the representativeness of the measurement results, multiple measurements should be carried out at different positions of the pipe. Generally speaking, at least 3 different sections should be evenly selected in the circumferential direction of the pipe, and at least 3 evenly distributed points should be selected on each section for measurement. This can effectively avoid measurement errors caused by uneven wall thickness that may occur in the production process of the pipe.

The second step is to carry out the measurement operation. Gently jam the measuring claw of the caliper on the wall thickness part of the pipe. Be careful not to use too much force, so as not to damage the pipe or deform the caliper and affect the accuracy of the reading. After the caliper display is stable, read and record the measurement data. For micrometers, the reading should first read the fixed scale, then read the half scale, and then read the movable scale, and estimate the reading.

The third step, data processing and judgment. After recording the data of all measurement points, calculate the average wall thickness of each section and the average wall thickness of the entire pipe. Compare the calculated average wall thickness with the wall thickness range specified in the product standard to determine whether the wall thickness of the HDPE double-wall corrugated pipe meets the requirements. If the measurement result is within the standard range, it means that the wall thickness of the pipe is qualified; if it exceeds the standard range, further inspection or treatment is required.

In addition to using calipers for direct measurement, for some special cases or occasions where higher measurement accuracy is required, professional instruments such as ultrasonic thickness gauges can also be used for measurement. The ultrasonic thickness gauge calculates the wall thickness according to the propagation time of the sound wave in the pipe by emitting and receiving ultrasonic waves, which has the advantages of non-destructive, high accuracy and wide measurement range. When using the ultrasonic thickness gauge, the instrument needs to be calibrated first, and then a coupling agent is applied to the surface of the pipe, and the probe is in close contact with the surface of the pipe to measure.

During the measurement process, it is also necessary to pay attention to the following points: First, the measurement environment should be kept dry and clean, and the measurement should be avoided in a high temperature, humid or corrosive gas environment, so as not to affect the accuracy and service life of the instrument; Second, the operator should be familiar with the use of measurement tools and precautions, and operate in strict accordance with the operating procedures; Third, the measurement data should be carefully recorded and properly kept for subsequent quality traceability and analysis.

In conclusion, accurate measurement of the wall thickness of HDPE double-wall corrugated pipe is an important link to ensure product quality. By using the correct measurement methods and tools, strictly following the measurement steps, and conducting scientific and reasonable processing and judgment of the measurement data, it is possible to effectively ensure that the wall thickness of the pipe meets the standard requirements. AD Pipeline has always been committed to providing high-quality HDPE double-wall corrugated pipe products for the majority of users, strictly controlling every link in the production process to ensure the stability and reliability of product quality. I hope that through the measurement methods introduced above, we can help you better understand and master the measurement skills of HDPE double-wall corrugated pipe wall thickness.