Why do gray-black mottled spots appear on tee elbows in stainless steel pipe fittings?

Release time:

2022-07-28

Stainless steel pipe fittings include common elbows, tees, large and small heads, flanges, etc. According to the connection method, they can be divided into socket pipe fittings, butt welding pipe fittings, threaded pipe fittings and flange pipe fittings.

Why do many gray and black mottled spots appear when ultrasonic cleaning agents clean stainless steel pipe fittings? In fact, this is an oxidation reaction, which has strong oxidizing properties. The chloride ions in it have a negative impact on the appearance of elbows and tees. Pitting corrosion forms gray and black mottled spots visible to the naked eye. The specific situation depends on what state it was in before cleaning to know the exact cause.

Therefore, when processing high-quality stainless steel pipe fittings, it is necessary to meet all aspects of accuracy requirements. Only in this way can standardized products be made. The accuracy of these products is reflected in all aspects: First, the size standards meet the accuracy requirements, because there are many product standards. , Different standards will be used in different environments; secondly, the production and manufacturing process and professional standards are to make it have professional standards so that the product does not lose accuracy.

Wuxi Shunyi Technology Co., Ltd.

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