One of the first tasks in inspecting steel pipes is to analyze their chemical composition to determine whether the material meets the standards or customer requirements. Routine chemical composition testing items include analysis of main elements and impurity elements. During the steel pipe production process, it is necessary to control the content of the chemical composition of the steel within a certain range to ensure the quality of the product. Therefore, chemical composition analysis is an essential test.

Physical property testing is an important part of steel pipe inspection, mainly including hardness test, tensile test, impact test and bending test. These tests can objectively analyze the performance of steel pipes under stress, provide users with valuable reference data, and also help steel pipe manufacturers control and improve their products.

Non-destructive testing is also required during the inspection process of steel pipes. This test can achieve non-destructive testing without destroying or damaging the samples. These include: ultrasonic testing, magnetic particle testing, eddy current testing and other technologies. The purpose of non-destructive testing is to discover and eliminate defects in steel pipes and improve product reliability and safety.

Metallographic analysis is an important test item for steel pipe inspection. It is used to check whether the organizational structure of steel pipes during the production process meets the corresponding standards and to find defects therein. Typically, metallographic analysis involves a variety of microscopy techniques, such as optical microscopy, electron microscopy, etc.

These testing items can effectively control the quality of steel pipes and ensure the safety and reliability of products in actual use.

Steel pipe inspection services include:
Thickness testing, eddy current testing, corrosion testing, quality testing, roundness testing, corrosion testing, dimensional testing, flaw detection, nondestructive testing, and impact strength testing.

Physical and Chemical Property Inspections
1. Chemical Composition Inspection: This primarily checks whether the carbon, sulfur, and phosphorus content of the steel pipes meet standard requirements.
2. Mechanical properties test: including tensile strength, yield strength, impact toughness, etc. These indicators are directly related to the service life and safety performance of steel pipes.
3. Weld performance inspection: Welding is one of the important processes of steel pipes. It is very important to inspect the strength and reliability of the welds. Generally, weld tensile and bending tests are used.
4. Corrosion performance and wear resistance test: These indicators are mainly used to evaluate the corrosion resistance and wear resistance of steel pipes under specific environmental conditions.

Appearance and Geometric Dimension Inspection
1. Surface Inspection: This primarily checks the surface quality of the steel pipe for defects such as cracks, scars, and bubbles.
2. Dimension inspection: Check whether the outer diameter, wall thickness, length and other parameters of the steel pipe meet the requirements, and also check the straightness and curvature of the steel pipe.
3. Appearance inspection: Check whether the appearance quality and shape of the steel pipe meet the standard requirements.

Answers

• 
  We plan to import steel bars to Vietnam. Are there any restrictions on importing steel bars from your country at present? 26/11/2025 17:42:27
• 
  How to Remove Rust from Steel Pipes 21/11/2025 13:22:53
• 
  Why is there such a large price difference for stainless steel pipes? 20/11/2025 04:27:51
• 
  We plan to purchase a batch of hot-dip galvanized steel sheets. Given that our previous suppliers failed to meet our material performance requirements, we have strict standards for the corrosion resistance, galvanized layer quality, and processing performance of the sheets this time. Can you provide a detailed material certificate that meets the relevant standards to ensure that the chemical composition and mechanical properties are up to standard? Can you guarantee the bending performance? We need to confirm that when the sheet metal is processed at a specific bending radius, there will be no zinc layer peeling or micro-cracks. 18/11/2025 17:43:19
• 
  Why should an arch be reserved during the construction of corrugated culverts? 14/11/2025 11:38:05