Company news

Sanonpipe holiday notification

The holiday notice for Qingming Festival 2022 is as follows: We have a 3-day statutory holiday. Please send any information directly to your mailbox, and I will contact you as soon as possible.   Read More

Boiler tube

Boiler tube is a kind of seamless tube. The manufacturing method is the same as seamless pipe, but there are strict requirements on the type of steel used to manufacture steel pipe. According to the use of temperature is divided into two kinds of general boiler tube and high-pressure boiler tube.... Read More

Oil pipeline

Today we introduce the commonly used oil seamless steel pipe, oil pipe (GB9948-88) is suitable for oil refinery furnace tube, heat exchanger and seamless pipe. Steel pipe for geological drilling (YB235-70) is used for core drilling by geological department, which can be divided into drill pipe, d... Read More

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

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

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

Our trademark

After more than a year,our trademark has finally been registered successfully . Dear customers and friends,please identify them accurately .   Read More

Introduction to API 5L pipeline steel pipe/The difference between API 5L PSL1 and PSL2 standards

API 5L generally refers to the implementation standard of line pipes, which are pipelines used to transport oil, steam, water, etc. extracted from the ground to oil and natural gas industrial enterprises. Line pipes include seamless steel pipes and welded steel pipes. At present, the commonly use... Read More
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