Small-orifice seamless pipe is a kind of pipe with small inner diameter, uniform wall thickness and no welded joint, which is mainly made by drawing, perforating or cold drawing process.

Oil well pipe corrosion is a very important technical and safety problem in the oil and gas industry.

Black low carbon steel pipe is a kind of steel pipe mainly produced by hot rolled or cold drawn steel material, and the surface is not galvanized, and the black oxide skin is retained.

Stainless steel is a special steel made by adding chromium and other metal elements to ordinary carbon steel.

As a common building material, the surface treatment process of stainless steel square pipe is very important to improve the corrosion resistance and aesthetics of stainless steel square pipe.

Stainless steel square pipe is a stainless steel material made of square or rectangular pipe, because of its excellent corrosion resistance and aesthetics, widely used in architectural decoration, industrial equipment, structural support and transmission systems.

Flange is a very important part of pipeline connection, it can usually affect the safety of the entire pipeline. After the flange is installed, regular cleaning and maintenance are usually required to prevent the flange from rusting and damage, resulting in leakage of the entire pipeline.

Stainless steel flanges are commonly used in connecting pipe systems. There are many types of them, and the material, standard, size and application of each flange are different.

Stainless steel is a kind of steel formed on the basis of ordinary carbon steel by adding at least 10.5% chromium and other alloying elements (such as nickel, molybdenum, vanadium, niobium, titanium, etc.).

Seamless carbon steel pipe rust removal refers to the removal of corrosion and oxides on the inner wall and surface through a series of physical or chemical methods without destroying the matrix of the pipe, in order to restore or improve the finish of the inner and outer walls, and ensure the subsequent use and coating quality of the pipeline.

Large diameter carbon steel elbows occupy an important position in modern industrial pipe systems, especially in the transport of high temperature and high pressure media, high-quality elbows can ensure the tightness and durability of the entire pipe system.

Elbow is a basic pipe fitting in a pipe system, used to connect two pipes of the same or different nominal diameters.

Non-destructive testing (NDT) is a method to detect and evaluate the internal structure, material properties and defects of the object under test without damaging its integrity.

Boiler tube refers to the steel with two ends open and hollow section, and its length is larger than the surrounding.

ASTM-A36 is an American standard carbon structure steel plate, its implementation standard is ASTM specific technical conditions.