304L pickled surface stainless steel pipe product details page

304L pickled surface stainless steel pipe

Product Details：

MOQ： 1Ton

Payment L/C T/T (30%DEPOSIT)balance to be paid before shipment

Place of Origin China

Delivery Time 30 Days

Material 304L

Application Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry

Certification CE, ISO9001

Size / Thickness DN15-100

Product Information

304L pickled stainless steel pipe is a kind of stainless steel pipe that has undergone special treatment. The treatment process mainly includes two steps: pickling and passivation. This treatment method aims to improve the corrosion resistance and rust prevention ability of 304L stainless steel pipes. First of all, pickling is a process of corrosive chemical cleaning using acidic solutions. Generally, a nitrogen-hydrofluoric acid solution that is corrosive to stainless steel is used. The purpose of this step is to remove pollutants on the surface of stainless steel, including surface deposits, welding temper colors and the underlying chromium-depleted layer. These pollutants may hinder the formation of a protective film and thus affect the corrosion resistance and rust prevention ability of stainless steel. After pickling, rinse the surface of the stainless steel pipe with clean water to ensure that the surface is clean and tidy, creating conditions for the subsequent formation of a protective film. Then, passivation is a chemical cleaning method. The solution used is not corrosive to 304L stainless steel pipes, but can effectively remove free iron that hinders the formation of a protective film. Passivation treatment can thicken the original protective film, thereby further improving corrosion resistance. This step not only protects and repairs the protective film but also further consolidates the protective film on the surface of 304L stainless steel pipes, significantly enhancing its corrosion resistance and rust prevention performance. Therefore, 304L stainless steel pipes that have undergone pickling and passivation treatment can be regarded as true 304L stainless steel pipes. Their corrosion resistance and rust prevention ability have been greatly enhanced and are particularly suitable for application environments with high corrosion resistance requirements, such as the chemical industry, petroleum industry, etc.