As an important pipeline product widely used in industries such as petroleum, chemical, coal, aviation, and metallurgy, the quality and safety of high-pressure steel wire braided rubber hoses are directly related to the smooth production process and personnel safety. Therefore, it is particularly important to establish inspection items and standards for high-pressure steel wire braided rubber hoses. The following will elaborate on its main inspection items and the standards followed.

1、 Physical performance inspection

1. Voltage withstand test

The pressure resistance test is an important means of evaluating the pressure bearing capacity of high-pressure steel wire braided rubber hoses. By placing the hose in a set pressure environment for a period of time, observe whether there are any abnormal phenomena such as leakage, pipe rupture, or component damage. This test not only ensures the safety of the hose under normal working pressure, but also predicts its performance under extreme working conditions.

2. Air tightness test

The airtightness test uses dry and clean air, nitrogen or other protective gases as the medium, and detects whether there is any leakage in the rubber hose by filling it with a certain pressure of gas inside. This experiment is crucial for ensuring the sealing of the hose in the gas delivery system. Standards usually specify parameters such as testing pressure, duration, and allowable leakage rate.

3. Flexibility test

Flexibility is an important indicator for evaluating the ability of a rubber hose to resist bending deformation during use. By moderately bending the hose and observing whether it can return to its original shape without breaking or being damaged, the flexibility can be determined to meet the requirements.

2、 Chemical and Material Performance Inspection

1. Uniformity of rubber hose texture

Check whether the adhesive layer of the high-pressure steel wire braided rubber hose is uniform, and whether there are irregular phenomena such as adhesion, bubbles, impurities, etc. These defects may affect the strength and durability of the hose, so strict control is required.

2. Adhesive strength

Adhesive strength refers to the bonding force between steel wire and adhesive layer. By conducting peel tests and other methods, check whether the adhesive strength between the steel wire and the adhesive layer meets the standard requirements. This indicator is directly related to the overall strength and durability of the hose.

3. Chemical resistance performance

High pressure steel wire braided rubber hoses may come into contact with various chemical media such as oil, acid, alkali, etc. during use. Therefore, it is necessary to test its tolerance to these media, including corrosion resistance, swelling resistance, etc.

3、 Environmental adaptability inspection

1. High temperature resistance performance

For rubber hoses that need to work in high temperature environments, high temperature resistance performance testing is required. By simulating a high-temperature environment, observe whether the hose softens, deforms, or loses elasticity. This test is of great significance for ensuring the reliability and safety of rubber hoses under high temperature conditions.

2. Low temperature resistance performance

Similarly, for rubber hoses that need to work in low-temperature environments, low-temperature resistance performance testing is also required. By simulating a low-temperature environment, observe whether the rubber hose exhibits phenomena such as brittleness and cracking. The quality of low-temperature performance directly affects the effectiveness of rubber hoses in cold regions.

4、 Fatigue life test

Fatigue life test simulates the long-term use of rubber hoses under actual working conditions, observing the service life and performance changes of the hoses by repeatedly applying pressure and temperature changes. This experiment is crucial for evaluating the durability and reliability of rubber hoses. The PTM series hose pulse testing machine is an advanced equipment used for such tests. It can automatically set parameters such as pulse pressure, frequency, and frequency to conduct comprehensive fatigue life testing on hoses.

5、 Inspection standards and specifications

The inspection standards and specifications for high-pressure steel wire braided rubber hoses are important basis for ensuring product quality and safe use. There are a series of relevant standards and specifications both domestically and internationally, such as GB/T, ISO, ASTM, etc. These standards and specifications provide detailed requirements for physical properties, chemical properties, environmental adaptability, and inspection methods. Manufacturers and quality inspection units need to strictly follow these standards and specifications in their production and inspection work to ensure that product quality meets the requirements.

The inspection items and standards for high-pressure steel wire braided rubber hoses cover multiple aspects such as physical properties, chemical and material properties, environmental adaptability, and fatigue life. Through comprehensive inspection and testing work, the safety and reliability in practical use can be ensured. At the same time, continuously improving and updating inspection standards and specifications is also an important means to promote industry technological progress and product quality improvement.