As our lives continue to advance and various scientific technologies are increasingly applied, our demand and use of different materials are growing. Currently, our lives are improving, and the use of scientific materials is becoming more widespread. There are two types of stainless steel used in hollow sucker rods: one is ordinary stainless steel, and the other is acid-resistant steel designed for use in special environments. Ordinary stainless steel in hollow sucker rods can withstand weak corrosive elements like air, water, and steam, while acid-resistant steel can resist corrosion from chemical media such as acids, alkalis, and salts. However, no matter what type of stainless steel is used in hollow sucker rods, to meet the demands of life and production, it must undergo processing techniques like those used in Tianjin's hollow sucker rods to become more useful materials for people.

Yet, many customers worry about being deceived when buying hollow sucker rod stainless steel because they don't know how to identify the nickel content. So how can one accurately determine this? Generally, hollow sucker rod stainless steel comes in chromium-based and nickel-based varieties. To differentiate between the two, magnetic testing can be used, but this method is only suitable for certain types. Typically, chromium-based stainless steel is more magnetic than nickel-based stainless steel. Another method is the use of a test solution: by placing a drop on the stainless steel, a reaction will occur, and the resulting color change can help determine the nickel content. Of course, metal instruments can also be used to identify the nickel content. Finally, spark testing, commonly used in steel, can also be employed.