Do you know the Surface Preparation of Stainless Steel Seamless Pipe?

Seamless Stainless Steel Tubing Supplier tells everyone about seamless tube surface pretreatment! The outer galvanized and coated steel pipe of seamless pipe is the same as the plastic coated steel pipe. It is based on steel pipe. The pipe is a steel pipe with a coating inside and outside. According to the needs of users, plastic or galvanized layer can be selected, and other coating materials can also be used.

Stainless Steel Seamless Pipe

Therefore, Stainless Steel Seamless Pipe with galvanized and plastic coated surface should be surface pretreated first. The specific processing steps are as follows:

1. Before shot blasting and rust removal, preheat the seamless pipe to dispel moisture, and the preheat temperature is 40 ℃ ～ 60 ℃;

2. The rust removal shall reach the Sa2.5 level in GB / T8923, and the depth of the anchor marks on the seamless pipe surface is 40μm ～ 100μm;

3.Residual rust and dust on the surface of the seamless pipe should be removed;

4. Spraying should be performed within 4 hours after surface pretreatment.

In addition, there are two main types of galvanizing methods on the surface of seamless pipes: hot-dip galvanizing and galvanizing. Hot-dip galvanizing includes wet, dry, lead-zinc, and redox methods.

The main difference between different methods of galvanizing hot-dip galvanizing is the method of activating the surface of the pipe body to improve the quality of galvanizing after acid-leaching cleaning of seamless pipes. Dry production and redox methods are mainly used in production.

The surface of the galvanized zinc layer is very smooth and dense, and the structure is uniform; it has good mechanical properties and corrosion resistance; the zinc consumption is 60% to 75% lower than that of hot-dip galvanizing. Electrogalvanizing is technically complicated, but this method must be used for single-sided plating, double-sided plating with different thicknesses on the inner and outer surface, and seamless tube galvanizing.

Do you know the three major characteristics of stainless steel pipes? Stainless steel pipes can be found everywhere in our daily use. I believe that many friends are asking why we are exposed to so many stainless steel pipe products in our lives. Help everyone to better understand.

1.Corrosion resistance

Most stainless steel products require good corrosion resistance. Stainless steel pipes are similar to Class I and II tableware, kitchen appliances, water heaters, water dispensers, etc.

2.Welding workability

Welding performance requirements vary from product to product. A tableware usually does not require welding performance, and even includes some pot companies. However, most products require good welding performance of raw materials, such as second-class tableware, insulation cups, steel pipes, water heaters, water dispensers, etc.

3.Polishability

At present, stainless steel products are generally polished during the production process. Only a few products, such as water heaters and water dispenser linings, do not need polishing. Therefore, this requires good polishing performance of the raw materials.

Our company also has Duplex Stainless Steel Pipe on sale, welcome to consult.