1. Stress corrosion: Stainless steel pipe fittings produce stress corrosion in the corrosive medium environment containing oxygen and chloride ions. The proportion of stress corros
Apr 21, 2023
What are the advantages of stainless steel pipe fittings? 1. Chemical properties: The corrosion resistance of stainless steel pipe fittings is beyond doubt. Many construction occas
Apr 17, 2023
There are many kinds of stainless steel pipe fittings, which can be divided into several categories according to the organizational structure at room temperature: 1. Austenitic typ
Apr 13, 2023
Heat treatment of pipe fittings before and after welding 1) Preheating of pipe fittings before welding: its function is to reduce the temperature difference between the weld metal
Apr 10, 2023
Ductile iron pipe is a type of cast iron, an alloy of iron, carbon and silicon. Graphite in ductile iron exists in spherical form, and the size of general graphite is 6-7 grades. I
Mar 25, 2023
The pipes made by casting molten iron above No. 18 and adding a nodularizing agent through high-speed centrifugal casting of a centrifugal ductile iron machine are called ductile i
Mar 20, 2023
As a substitute for steel, ductile iron was developed in 1949. Cast steel contains less than 0.3% carbon, while cast iron and ductile iron contain at least 3% carbon. The low carbo
Mar 15, 2023
Distinguish from professional knowledge In terms of professional knowledge, the expression methods of general ductile iron in the national standard are QT400-15, QT400-18, etc., wh
Mar 10, 2023
Since the main parts of the hose are made of austenitic stainless steel, the excellent temperature resistance and corrosion resistance of the hose are guaranteed.
May 19, 2022
The range of flange joints is very wide. Flange rubber joints, flange expansion joints, flange power transmission joints, flange hose joints, etc. are collectively referred to as
Jun 13, 2022
During installation, the disc should stop in the closed position. The opening position should be determined according to the rotation angle of the butterfly plate.
May 17, 2022
Gray iron: gray, very dark gloss, rough surface. Ductile iron: gray, the gloss is brighter than that of gray iron, and the surface roughness is similar to that of gray iron.
May 16, 2022
