welded pipe

In the past month, China's steel industry has received a series of good news, especially in terms of rising billet prices, steady growth in steel pipe exports, and positive signs in future steel pipe price forecasts. 1. Billet price trend Since September, China's billet market

Spiral welded pipe is a steel pipe manufactured by spiral welding technology. Spiral welded pipe is usually used to transport fluids such as oil, natural gas, water, as well as in structural engineering and bridge construction. The production method of spiral welded pipe is to

DIN standard (Deutsches Institut für Normung, German Institute for Standardization) is a technical standard system for steel pipes and other materials in Germany. DIN standard is the national standard of Germany and is widely used in the manufacture of various materials and industrial products, including

JIS (Japanese Industrial Standards) provides systematic guidance for the production and application of steel pipes. JIS covers steel pipes made of a variety of materials, including carbon steel, stainless steel, alloy steel, etc. Each material is classified into different steel grades according to its chemical

ASTM (American Society for Testing and Materials) standards are widely used internationally, covering the chemical composition, mechanical properties, manufacturing process and other requirements of various materials. In the field of steel pipes, ASTM standards have specific specifications for different types of steel pipes. The following

API Standard is an industry standard developed by the American Petroleum Institute (API) and is widely used in the oil and gas industry. API Standard covers all aspects from exploration, production, processing to transportation and sales, ensuring the safety, reliability and compatibility of equipment and

The purpose of anti-corrosion treatment of steel pipes is to extend their service life, protect them from environmental factors, and avoid economic losses and safety hazards caused by corrosion. The specific reasons include the following: Extend life: Anti-corrosion treatment can significantly extend the service life

In the manufacture of metal facilities, hot-dip galvanizing and cold-dip galvanizing are two commonly used manufacturing processes. As a metal anti-corrosion method, hot-dip galvanizing usually puts the steel structure to be derusted into the molten zinc at about 500 °C, so that the zinc layer

A natural gas pipeline is a specially designed pipeline system for transporting natural gas. The materials of natural gas pipelines mainly include the following: Carbon steel: the most commonly used material, due to its high strength, good corrosion resistance and low cost. Alloy steel: used

Seamless steel pipe and welded steel pipe are two common types of steel pipes, which have significant differences in manufacturing process, performance, application areas, etc. Seamless steel pipe manufacturing process: Seamless steel pipe is made directly from a whole piece of metal through processes such