News
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Salute to the great “Half the Sky” of the New Era
On March 8, 2022, we celebrate the international Working Women’s Day, an annual festival exclusively for women.As a celebration of women in the economic, political and social fields have made significant contributions and great achievements and set up a festival, also known as “Inter...Read more -
Dragon Heads-Raising Day
Longtaitou festival is a traditional Chinese festival held on the second day of the second month of the Chinese calendar. In the north, The second of February is also called “Dragon Head Day”, also known as “Spring Dragon Festival”.It symbolizes the return of spring and t...Read more -
Steel stock market
Last week domestic steel market price weak operation.Overall, end-market demand is weak at the moment, but as time goes on, this phenomenon will gradually improve.On the other hand, the overall supply of the northern market is still affected by the Winter Olympics, so the incremental part of the ...Read more -
How to test seamless steel pipe?Which projects are the focus!
Seamless steel pipe is a kind of long steel with hollow section and no joint around.The steel pipe has a hollow section and is widely used for conveying fluid pipelines, such as conveying oil, natural gas, gas, water and some solid materials.Compared with solid steel such as round steel, steel pi...Read more -
2022 Spring Festival Holiday notice
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Knowledge of seamless steel pipe inspection
1、chemical composition test 1.according to the chemical composition and mechanical properties of domestic seamless pipe, such as 10, 15, 20, 25, 30, 35, 40, 45 and 50 steel chemical composition should comply with the provisions of GB/T699-88.Imported seamless pipes shall be inspected according ...Read more -
Seamless steel tube knowledge
The outer diameter of hot-rolled seamless pipe is generally greater than 32mm, and the wall thickness is 2.5-200mm. The outer diameter of cold-rolled seamless steel pipe can reach 6mm, and the wall thickness can reach 0.25mm. The outer diameter of thin-walled pipe can reach 5mm and the wall thick...Read more -
Steel prices before and after the Spring Festival: before the festival is not bearish, not bullish after the festival
2021 has passed and a New Year has begun.Looking back on the year, the steel market has had its ups and downs.In the first half of the year, the global economic recovery, the rapid growth of domestic real estate and fixed asset investment, driving the demand for steel, steel prices into the risin...Read more -
Five kinds of heat treatment process for seamless steel tube and precision steel tube
The heat treatment process of steel pipe mainly includes the following 5 categories: 1, quenching + high temperature tempering (also known as quenching and tempering) The steel pipe is heated to the quenching temperature, so that the internal structure of the steel pipe is transformed into auste...Read more -
Introduction to alloy steel tube
Alloy steel pipe is mainly used in power plant, nuclear power, high pressure boiler, high temperature superheater and reheater and other high pressure and high temperature pipeline and equipment, it is made of high quality carbon steel, alloy structure steel and stainless heat-resistant steel mat...Read more -
Structure with seamless pipe
1 .Brief introduction of structural pipe Seamless pipe for structure (GB/T8162-2008) is used for the general structure and mechanical structure of the seamless pipe.Seamless steel tube is divided into a variety of different uses. Stainless steel seamless pipe for structure (GB/T14975-2002) is a ...Read more -
Oil steel pipe
Petroleum steel pipe is a kind of long steel with hollow section and no joint around, while petroleum cracking pipe is a kind of economic section steel.Role: widely used in the manufacture of structural and mechanical parts, such as oil drill pipe, automobile drive shaft, bicycle frame and steel ...Read more -
Boiler tube
Implement GB 3087, GB/T 5310, DIN 17175, EN 10216, ASME SA-106/SA-106M, ASME SA-192/SA-192M, ASME SA-209/SA-209M, ASMESa-210 /SA-210M, ASME SA-213/SA-213M, ASME SA-335/SA-335M, JIS G 3456, JIS G 3461, JIS G 3462 and other related standards. Standard name Standard Common grade of steel Seamle...Read more -
Steel Pipe Knowledge (Part 4)
Standards referred to as” There are many standards for Steel products in the United States, mainly including the following: ANSI American national standard AISI American Institute of Iron and Steel standards ASTM Standard of American Society for Materials and Testing ASME Standard AMS Aeros...Read more -
Knowledge of Steel Pipe (Part Three)
1.1 Standard classification used for steel pipes: 1.1.1 By region (1) Domestic standards: national standards, industry standards, corporate standards (2) International standards: United States: ASTM, ASME United Kingdom: BS Germany: DIN Japan: JIS 1.1...Read more -
Part 2 of applicable standards for seamless pipes
GB13296-2013 (Seamless steel pipes for boilers and heat exchangers). Mainly used in boilers, superheaters, heat exchangers, condensers, catalytic tubes, etc. of chemical enterprises. Used high-temperature, high-pressure, corrosion-resistant steel pipe. Its representative materials are 0Cr18Ni9, 1...Read more -
Applicable Standards for Seamless Pipes (Part One)
GB/T8162-2008 (Seamless steel pipe for structure). Mainly used for general structure and mechanical structure. Its representative materials (brands): carbon steel #20,# 45 steel; alloy steel Q345B, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc. To ensure the strength and flattening test. GB/T8163-20...Read more -
Steel pipe knowledge part one
Classified by production methods (1) Seamless steel pipes-hot rolled pipes, cold rolled pipes, cold drawn pipes, extruded pipes, pipe jacking (2) Welded steel pipe Classified by pipe material-carbon steel pipe and alloy pipe Carbon steel pipes can be further divided into: ordinary carbon steel pi...Read more -
The difference between ERW tube and LSAW tube
ERW pipe and LSAW pipe are both straight seam welded pipes, which are mainly used for fluid transportation, especially long-distance pipelines for oil and gas. The main difference between the two is the welding process. Different processes make the pipe possess different characteristics and are s...Read more -
The latest market report
This week steel prices rose as a whole, as the country in September to invest in the market capital brought by the chain reaction gradually emerged, downstream demand has increased, entrepreneurs macroeconomic index also showed that many enterprises said the economy in the fourth quarter good ope...Read more -
Steel Market Information
Last week (September 22-September 24) the domestic steel market inventory continued to decline. Affected by the non-compliance of energy consumption in some provinces and cities, the operating rate of blast furnaces and electric furnaces dropped significantly, and the domestic steel market price ...Read more -
Good News !
Recently, our company received a notice of qualification from China Quality Certification Center.This marks the company successfully completed the ISO certificate (ISO9001 quality management, ISO45001 occupational health and safety management, ISO14001 environmental management three systems) of t...Read more -
Many steel mills in China plan to suspend production for maintenance in Sep
Recently, a number of steel mills have announced maintenance plans for September. Demand will gradually be released in September as the weather conditions improve, coupled with the issuance of local bonds, major construction projects in various regions will continue to proceed.From the supply sid...Read more -
Baosteel reports record quarterly profit, foreseeing softer steel prices in H2
China’s top steelmaker, Baoshan Iron & Steel Co., Ltd. (Baosteel), reported its highest quarterly profit, which was supported by strong post-pandemic demand and global monetary policy stimulus. The company’s net profit rose greatly by 276.76% to RMB 15.08 billion in the first half of th...Read more
