1. The use of large-diameter stainless steel pipe can be divided into oil well pipes (casing pipes, oil pipes, and drill pipes, etc.), pipeline pipes, boiler pipes, mechanical structure pipes, hydraulic prop pipes, gas cylinder pipes, geological pipes, chemical pipes (high-pressure chemical fertiliz

First, the methods of cold galvanizing and hot galvanizing of galvanized steel pipes are different:1. Cold plating: It is a process of anti-corrosion treatment on the surface of workpieces through electrochemical principles.2. Hot-dip galvanizing: also known as hot-dip galvanizing, is a method in wh

(1) The warehouse should be selected according to the geographical conditions. Generally, an ordinary closed warehouse is used, that is, a warehouse with a roof, a wall, tight doors and windows, and a ventilation device;(2) Do not stack together with acid, alkali, salt, cement, and other materials t

1. The anti-embroidery treatment on the surface of the galvanized steel pipe is more durable, it will not oxidize too quickly, and will not form white rust on the steel pipe;2. Comprehensively protect the steel pipe. After heating, every part of the steel pipe is coated with zinc, and the concave an

First of all, it may be due to the stress of the spiral seam submerged arc welded steel pipe. That is, the residual stress and welding stress after the steel pipe is formed.Secondly due to the presence of hydrogen. If the flux is not dried enough, the preheating temperature is insufficient or the pr

Line pipe has the advantages of high-temperature resistance and reduced loss, and the pipe is generally very strong and durable. Because of such powerful advantages, line pipes are widely used in oil transportation, the transportation of various gases, and liquefied gas. In addition to being used in

The performance and function of the original color straight seam steel pipe in the specific use process, the fully demonstrated operational contribution, and the resulting use performance. After painting, the straight seam steel pipe is also very energetic and beautiful when it is sprayed with white

Hydrostatic test of oil casing is an essential link in the steel pipe manufacturing process and an important means to test the overall quality of oil steel pipes. In simple terms, it is a test in which the pipe is filled with water and tested under pressure to maintain the specified pressure without

In pipeline manufacturing, Steel flanges are mainly used for the link of pipelines. In the pipelines that need to link, Various devices include a flange. deficient-Pressure pipelines can use wire flanges and welding flanges with pressures greater than 4 kg. Add sealing points within the two flanges,

The seamless steel elbow has the following advantages: hygienic and non-toxic, light in weight, good heat resistance, good corrosion resistance, good heat preservation, good impact resistance and long service life1. Hygienic and non-toxic: the material is completely composed of carbon and hydrogen,