wang li

Definition and Standards ASTM A106 Grade B is a standard for high-temperature carbon steel seamless pipes developed by the American Society for Testing and Materials (ASTM). It belongs to the ASTM A106/A106M standard system and is applicable to pipeline systems in the petroleum, natural gas, chemical and other industries. It regulates the manufacturing, chemical composition

Core parameters of steel pipes size Definition and measurement method of nominal diameter (NPS/NB) The nominal diameter of steel pipe (NPS, Nominal Pipe Size, or NB) is one of the important parameters in the pipeline system. It is usually expressed in British (inch) units and provides the most intuitive data for the design and installation

‌Policy background and purpose Why should we strictly investigate “paying for export”? After China cancelled the steel export tax rebate policy in 2021, the phenomenon of some enterprises evading tax supervision through the “paying for export” model has intensified. “Buying for export” means that enterprises use third-party customs declaration qualifications, forged trade contracts or low-priced

Why is A500 Steel Important in Construction and Engineering? A500 structural steel is a cold-formed carbon steel certified by ASTM international standards. It is widely used in various industries due to its excellent performance and high cost-effectiveness, such as building frames, bridge construction, etc. According to statistics, about 60% of steel structures in the world

Why Is SA-179 The “Hidden Champion” In The Field Of Industrial Pipelines? SA-179‌ is a cold-drawn seamless carbon steel pipe in accordance with ASTM international standards. This steel pipe meets multiple requirements such as strength, corrosion resistance and cost control under extreme conditions of high temperature and high pressure. Whether it is the boiler heat

what is nominal pipe size what is nominal pipe size The abbreviation of Nominal Pipe Size (NPS) is designated by the American Society of Mechanical Engineers (ASTM) and is widely used in North America (the United States, Canada, etc.). NPA is not a specific inner or outer diameter, but a standardized “size” system, the core

ASTM A36 steel is a widely used low-carbon structural steel with excellent weldability, moderate strength and super high cost performance. It is a “universal material” in the construction and other industries. When purchasing materials, it is very important to understand the chemical composition, mechanical properties and other related properties of this standard. This article will

Stainless steel pipes have emerged as an essential component of contemporary industry, providing remarkable strength, corrosion resistance, and temperature integrity. Numerous grades of stainless steel pipes are available, but 310S pipes remain particularly popular due to their superior performance in high-temperature applications.  This article delves into the most important sectors in which stainless steel pipes

PVC pipes are lightweight and reasonably priced, and are commonly used in building drainage, industrial pipes and other fields. The weight of PVC pipes is an important parameter that cannot be ignored, and it is related to the selection, transportation and installation of pipes. Understanding the weight of PVC pipes can not only optimize costs

Stainless steel 304 tubes are a crucial component of many systems in various industries. These tubes are versatile and commonly used for strength and corrosion resistance applications. However, choosing the right material and understanding the specifics of stainless steel 304 can be challenging without expert guidance. In this post, we will go over everything you