The hot-dip galvanized pipe is to make the molten metal react with the iron matrix to produce an alloy layer so that the matrix and the coating are combined. Hot-dip galvanizing is to first pickle the steel pipe. In order to remove the iron oxide on the surface of the steel pipe, after the pickling,

Stainless steel pipe fittings are a kind of pipe fittings. They are made of stainless steel materials, so they are called stainless steel pipe fittings. They include stainless steel elbows, stainless steel tees, stainless steel crosses, stainless steel reducers, stainless steel pipe caps, etc., acco

316L stainless steel pipe is a kind of pipe widely used in construction engineering. The shape of the tube is an oblong hollow steel tube. Mechanical equipment, petrochemical equipment, medical equipment, food, and light industry pipelines or mechanical parts will all use 316L stainless steel pipes.

The API standard stipulates that the internal and external surfaces of import and export petroleum casings shall not have folds, separations, cracks, and scars. These defects should be completely removed, and the removal depth should not be less than 12.5% of the nominal wall thickness. Petroleum ca

The wall thickness can be called thick-walled steel pipe. There are some doubts about this. It depends on the ratio of the outer diameter of the steel pipe to the wall thickness of the steel pipe. For example, a steel pipe with a diameter of 50 mm, 10 mm can be regarded as a thick-walled steel pipe.

Stainless steel pipes are explosion-proof. The pressure-bearing and explosion-proof ability of stainless steel pipes depend on the wall thickness of the pipe. If thick-walled stainless steel pipes are used, it is no problem to withstand pressures of 10Mpa (about 100 kg) or even higher. Threeway Stee

(1) ASTM A179 cold drawn steel pipe with carbon steel pollution: contact with carbon steel caused by scratches and corrosive media to form the original battery and electrochemical corrosion.(2) ASTM A179 cold drawn steel pipe cutting: slag, splash and other easy to rust the material attached to the

Polishing methods of seamless steel tubes are as follows:Mechanical polishing1. The advantage is that the parts are smooth and the brightness is high after processing. The disadvantage is that the intensity of labor is too great, resulting in serious pollution, and can not process complex parts, the

In the production process of large-diameter steel pipes, since the primary processing is performed in a hot state, the heating operation is a very important process that determines the quality of the product. Heating furnaces are divided into heating furnaces and reheating furnaces according to thei

At present, the proportion of oil and gas transported by longitudinally welded pipes in the world is increasing, accounting for about 75%-95% of the total oil and gas. At present, the scope of transportation is gradually expanding, not only petroleum and natural gas, but also various chemical indust