• 304 Stainless Steel Pipe

304 Stainless Steel Pipe

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Product Details

We are a 15 years well experienced manufacturer and supplier of 304 stainless steel pipes, tubes for seamless, welded, round, square with various seize and large stock in China. We could offer you polished 304 stainless steel tubing for food grade, aisi 304 square tube and pipe for industry and decoration use.

OD: 6mm-406mm.

WT: 1mm-50mm.

Length: 6000mm-7000mm, or as required.

Surface: Pickling, polishing.


Heat Treatment of 304 Stainless Steel Pipe


The heat treatment of 304 stainless steel pipe is to change its physical properties, mechanical properties, residual stress, and to restore the corrosion resistance severely affected by pre-processing and heating, in order to obtain the best use of 304 stainless steel pipe or 304 stainless steel pipe can be further cold and hot processing. The so-called heat treatment is for different organizations, different types of stainless steel corresponding annealing, quenching and tempering, normalizing and other processing.

304 stainless steel pipe is a special kind of steel. The content of nickel and chromium in steel is very high. Due to the presence of alloying elements such as nickel and chromium, the heat treatment has the characteristics that common steel heat treatment does not have:

The heating temperature is high and the heating time is relatively long;

304 stainless steel pipe has low thermal conductivity and poor temperature uniformity at low temperatures;

Austenitic 304 stainless steel pipe has more severe thermal expansion;

The control of the atmosphere in the furnace is very important. Carburizing, nitride and decarburization and peroxidation should be prevented.


The surface gloss of 304 stainless steel pipe has a decisive influence on the use and price of the product. The iron oxide skin produced during the heat treatment will seriously affect the surface gloss.

Be sure to avoid scratching on the 304 stainless steel pipe surface and prevent deformation during heat treatment.


Among them, austenite 304 stainless steel pipe is the most widely used and the largest in usage. It is characterized by austenite structure at room temperature, no phase change, no hardening by heat treatment, but it can be hardened by cold working, commonly used heat treatment methods Solution treatment; ferritic stainless steel cannot be strengthened by heat treatment, can only be annealed to eliminate internal stress, easy to further processing; martensitic stainless steel, because of its high chromium, hardenability is good, you can use quenching, Tempering and other multiple heat treatment methods.


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