Choice between annealing and normalizing
Normalizing is to heat the steel pipe (such as seamless pipe, welded steel pipe) to 30~50 degrees above Ac3 or Accm, and cool it at a cooling rate slightly higher than annealing after keeping warm. Annealing is to heat the steel p...
2024-07-02
How to store galvanized pipes in summer
The weather is hot and humid in summer. Under this condition, the surface of galvanized products is prone to alkali resistance (commonly known as white rust). If the plated parts are not picked up and unpacked in time after arrivi...
2024-07-02
What is ASTM A269?
ASTM A269 is a material standard for austenitic stainless steel seamless and welded mechanical tubes. It is mainly used to specify the requirements for the size, chemical composition, mechanical properties, manufacturing process a...
2024-07-01
High-pressure boiler tube VS ordinary boiler tube
Boiler tube is a seamless tube, and the manufacturing method is the same as that of seamless tube, but there are strict requirements on the steel type used to manufacture steel tube. According to the use temperature, it can be div...
2024-07-01
What is bright annealed tube?
Bright annealed tube is a stainless steel tube processed by a special heat treatment process, and its main feature is the highly optimized surface quality.The main purpose of bright annealing treatment is to remove scale, oil stai...
2024-06-28
Small-diameter welded steel pipe
Small-diameter welded steel pipe is a steel pipe made by curling and welding steel plates or strips. The production process of small-diameter welded pipes is simple, the production efficiency is high, there are many varieties and ...
2024-06-28
