How to distinguish the authenticity of malleable steel pipe fittings
- Categories:Industry news
- Author:
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- Time of issue:2013-11-15
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(Summary description)Quick Identification Method of "One Knock, Two Look, Three Pounds" for Fake and Shoddy Pipe Fittings
With the rapid development of my country's economy, the demand for malleable iron pipe fittings (commonly known as malleable steel pipe fittings) for water, gas and oil circuits is increasing day by day, and the quality requirements will also be higher and higher. The first thing to judge the quality of a malleable pipe fitting is to see whether it meets the corresponding national standards (GB/T3287-2000).
However, some technical management, procurement and construction personnel suffer from little understanding of the national standards of malleable steel pipe fittings, and it is difficult to judge the quality of malleable steel pipe fittings for a while. They urgently need a more intuitive and portable atlas to help them identify. I believe that the publication of this atlas will help everyone to improve their ability to identify the quality of malleable steel pipe fittings and prevent them from being deceived.
One knock: malleable iron pipe fittings are tough casting products. If knocked by external force, if the surface is dented or deformed a little, it will not crack, which means that its material performance is acceptable.
Second look: When you look at the length of the thread, the thread length of general fake products always appears to be particularly short. Second, look at galvanizing. The galvanizing specified in GB/T3287-2000 refers to hot-dip galvanizing with better corrosion resistance. Zinc layer. The counterfeit and inferior products are treated with electro-galvanizing or other coatings after processing the thread. The surface of the thread has a zinc layer (coating), which is much lower in cost and has poor corrosion resistance. After being installed on the pipeline, yellow water (rust water) ) appears.
Three: The malleable steel pipe fittings that cut corners will definitely reduce the outer diameter, reduce the wall thickness, and shorten the medium and long dimensions. It is generally more than 10% lighter than the pipe fittings that meet the national standard. We can judge fake and inferior by weighing the weight with our hands.
How to distinguish the authenticity of malleable steel pipe fittings
(Summary description)Quick Identification Method of "One Knock, Two Look, Three Pounds" for Fake and Shoddy Pipe Fittings
With the rapid development of my country's economy, the demand for malleable iron pipe fittings (commonly known as malleable steel pipe fittings) for water, gas and oil circuits is increasing day by day, and the quality requirements will also be higher and higher. The first thing to judge the quality of a malleable pipe fitting is to see whether it meets the corresponding national standards (GB/T3287-2000).
However, some technical management, procurement and construction personnel suffer from little understanding of the national standards of malleable steel pipe fittings, and it is difficult to judge the quality of malleable steel pipe fittings for a while. They urgently need a more intuitive and portable atlas to help them identify. I believe that the publication of this atlas will help everyone to improve their ability to identify the quality of malleable steel pipe fittings and prevent them from being deceived.
One knock: malleable iron pipe fittings are tough casting products. If knocked by external force, if the surface is dented or deformed a little, it will not crack, which means that its material performance is acceptable.
Second look: When you look at the length of the thread, the thread length of general fake products always appears to be particularly short. Second, look at galvanizing. The galvanizing specified in GB/T3287-2000 refers to hot-dip galvanizing with better corrosion resistance. Zinc layer. The counterfeit and inferior products are treated with electro-galvanizing or other coatings after processing the thread. The surface of the thread has a zinc layer (coating), which is much lower in cost and has poor corrosion resistance. After being installed on the pipeline, yellow water (rust water) ) appears.
Three: The malleable steel pipe fittings that cut corners will definitely reduce the outer diameter, reduce the wall thickness, and shorten the medium and long dimensions. It is generally more than 10% lighter than the pipe fittings that meet the national standard. We can judge fake and inferior by weighing the weight with our hands.
- Categories:Industry news
- Author:
- Origin:
- Time of issue:2013-11-15
- Views:0
Quick Identification Method of "One Knock, Two Look, Three Pounds" for Fake and Shoddy Pipe Fittings
With the rapid development of my country's economy, the demand for malleable iron pipe fittings (commonly known as malleable steel pipe fittings) for water, gas and oil circuits is increasing day by day, and the quality requirements will also be higher and higher. The first thing to judge the quality of a malleable pipe fitting is to see whether it meets the corresponding national standards (GB/T3287-2000).
However, some technical management, procurement and construction personnel suffer from little understanding of the national standards of malleable steel pipe fittings, and it is difficult to judge the quality of malleable steel pipe fittings for a while. They urgently need a more intuitive and portable atlas to help them identify. I believe that the publication of this atlas will help everyone to improve their ability to identify the quality of malleable steel pipe fittings and prevent them from being deceived.
One knock: malleable iron pipe fittings are tough casting products. If knocked by external force, if the surface is dented or deformed a little, it will not crack, which means that its material performance is acceptable.
Second look: When you look at the length of the thread, the thread length of general fake products always appears to be particularly short. Second, look at galvanizing. The galvanizing specified in GB/T3287-2000 refers to hot-dip galvanizing with better corrosion resistance. Zinc layer. The counterfeit and inferior products are treated with electro-galvanizing or other coatings after processing the thread. The surface of the thread has a zinc layer (coating), which is much lower in cost and has poor corrosion resistance. After being installed on the pipeline, yellow water (rust water) ) appears.
Three: The malleable steel pipe fittings that cut corners will definitely reduce the outer diameter, reduce the wall thickness, and shorten the medium and long dimensions. It is generally more than 10% lighter than the pipe fittings that meet the national standard. We can judge fake and inferior by weighing the weight with our hands.
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