Company News

2025-06-05

Black Square Tube Production Process

Black square tube is a commonly used steel pipe material, also known as black rectangular steel pipe or square welded pipe. Its cross-sectional shape is rectangular or square, with high strength and compressive resistance. Black square tube is mainly made by welding process, and common finished product sizes are 30*20mm, 40*20mm, 50*25mm, etc., which can also be customized according to customer needs.

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2025-06-05

Understanding ASTM A213 Seamless Alloy Steel Pipes

Seamless alloy steel tubes and pipes, especially standard ASTM A213, are widely used for boilers, heat exchangers, high pressure devices, superheaters, and reheaters. Due to seamless alloy steel tubes’ hardness and mechanical property, they are siutable for high temperature and high pressure circumstances. ASTM A213 Standard is Seamless Ferritic and Austenitic Alloy-steel Boiler, Superheater, and Heat-Exchanger tubes.

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2025-06-04

Large Diameter Thick Wall LSAW Steel Pipe Production Process

Large-diameter thick-walled straight seam steel pipes are becoming more and more important in the steel pipe application industry. The main application industries of large-diameter thick-walled straight seam steel pipes are water conservancy projects, steel structures, power industry, chemical industry, urban planning construction, irrigation, long-distance oil and gas pipelines, bridge piling, and submarine oil pipelines. Today we will discuss the production process of this steel pipe.

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2025-06-04

What are the advantages of seamless steel pipes?

Seamless steel pipes have excellent properties compared to many steels. Under the same bending and torsional strength, they are lighter than solid steel such as round steel. They are economical steels with a wide range of uses. In order to improve the efficiency of the use of seamless steel pipes, we will focus on their performance. How to choose a suitable seamless steel pipe? Only by making the best use of it can the efficiency of the use of seamless steel pipes be improved. Today, the editor mainly introduces the advantages of seamless steel pipes.

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2025-06-03

Pipeline pickling and passivation process and precautions

Pickling and passivation of stainless steel pipes is a common process used to improve the corrosion resistance and extend the service life of stainless steel pipes. Pickling is a method of using chemical reactions to dissolve rust, oxide films and other products on the surface of the workpiece without affecting the base metal. Passivation is a method of using chemical reactions to form a dense oxide film on the surface of the workpiece. Its purpose is to prevent electrochemical corrosion by establishing an oxide film or oxygen adsorption layer on the surface of the workpiece, thereby improving the corrosion resistance (anti-electrochemical corrosion) of the metal.

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2025-06-03

Hollow vs Solid Steel Pipes Full Comparison

Today we are going to talk about steel pipes. It may sound a bit dry, but don't worry, we will make this topic easy and interesting so that you can understand it clearly. Hollow and solid steel pipes, these two guys are like two friends with different personalities, each with its own advantages and disadvantages. You know, steel pipes are really everywhere in our lives, from construction to transportation, they can be seen everywhere. Just like the rice on the table, although it is inconspicuous, it is an indispensable role. Today, let's take apart the "personalities" of these two steel pipes and see what the difference is in their strength and stiffness.

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2025-05-30

ASTM A53 ERW Steel Pipe Specifications Grades and Uses

ASTM A53 (also known as ASME SA53 pipe) is a carbon steel alloy used as structural steel or low-pressure piping, and is also suitable for general use in steam, water, gas, and air piping. The alloy specifications are established by ASTM International in the ASTM A53 / A53M specification. A53 pipe is available in three types (F, E, S) and two grades (A, B).ASTM A53 ERW steel pipe refers to a carbon steel pipe that conforms to the American Society for Testing and Materials (ASTM) A53 standard and is manufactured using the electric resistance welding (ERW) process. It is a type of steel pipe widely used in conveying media and pressure-bearing structures, such as piping systems for steam, water, gas and air, as well as in the construction and machinery industries.

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2025-05-30

How long is the service life of carbon steel pipe?

Carbon steel pipe is made of steel ingot or solid round steel through perforation into rough pipe, and then hot rolled, cold rolled or cold drawn. Carbon steel pipe plays an important role in my country's steel pipe industry. Carbon steel pipe fittings are made according to your medium and working conditions. No one dares to guarantee that they can be used for ten years or so. If the material is not suitable, even the best alloy may be corroded in 3 months.

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2025-05-29

Characteristics and specifications of 304 stainless steel welded pipe

304 stainless steel welded pipe is a common austenitic stainless steel welded pipe. Its main components include 18% chromium and 8% nickel. It has excellent corrosion resistance, oxidation resistance and good formability. Because it contains nickel and chromium, it has good acid resistance, alkali resistance and heat resistance. 304 stainless steel welded pipe is widely used in construction, chemical industry, food processing, medicine and other fields.

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2025-05-29

Ductile Iron Pipe Manufacturing Process from Melting to Inspection

Ductile iron is an iron-carbon alloy. It is made of high-quality cast iron with low sulfur and low phosphorus, and then spheroidized to make the carbon in it exist as spherical free graphite, thereby eliminating the defect of metal crystal continuity being cut off caused by flake graphite. It has the essence of iron and the performance of steel. It not only does not lose the castability and corrosion resistance of cast iron, but also increases the tensile strength, elongation, bending and impact resistance, that is, it has the high strength and toughness of steel. The urban water supply network mainly uses pipes and fittings cast by ductile iron, which is recognized by the urban water supply industry in various countries. At present, the development of foreign ductile iron pipe casting technology mainly adopts water-cooled metal mold centrifugal casting technology.

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2025-05-28

ASTM A53 standard for galvanized steel pipes

ASTM A53 is a standard specification for seamless pipe and welded pipe black and hot-dip galvanized steel pipes. Galvanizing is to provide additional corrosion resistance by immersing the steel pipe in molten zinc to form a zinc layer on its surface.

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2025-05-28

Performance advantages of SA192 seamless pipe

In the high-pressure industrial application scenario, SA192 seamless tube has become the core material of key equipment such as superheater and heat exchanger tube with its excellent performance, and plays an irreplaceable role in many industries such as energy and chemical industry.