Selection of Wall Thickness and Pressure Resistance Calculation for Seamless Steel Pipes For seamless steel pipes, given the outer diameter and wall thickness, we can calculate the maximum pressure the pipe can withstand. Alternatively, if the outer diameter and pressure are known, we can determine the most economical and suitable wall thickness. These two scenarios are [...]
1. Introduction 1.1 Overview As a key type of steel pipe product, pressure-bearing seamless pipes have extensive applications in various industrial fields. They are widely used in the oil and gas industry, chemical industry, as well as thermal equipment and energy sectors. Standardization of pressure-bearing seamless pipes is an important means to ensure their quality and [...]
Analysis of the Impact of Carbon Emission Rights on the Steel Industry Introduction 2024 is a pivotal year for the steel industry, as it grapples with declining demand from the real estate sector and broader economic challenges. Amidst these narratives, an understated event on September 10—Shougang Corporation's announcement to transfer 148,716.9 tons of carbon emission rights—could [...]
Ten Major Development Trends in the Steel Industry The steel industry, as one of the pillars of the national economy, is undergoing significant changes and opportunities. This article outlines ten key development trends currently shaping the industry. 01 Strong Export Performance In August 2024, China's steel exports reached 9.495 million tons, a year-on-year increase of 14.7%. [...]
Fatigue Performance of Materials 1. Fatigue Phenomenon Fatigue and fracture are major causes of failure in engineering structures. Under repeated loading, structural materials can experience brittle failure below their static load strength, necessitating consideration of fatigue strength in design. Since the 19th century, extensive research on fatigue failure has led to rich knowledge regarding fatigue observation, [...]
Analysis and Preventive Measures of Defects in Tube-Sheet Forgings Introduction Large free forging equipment is a symbol of industrial development, and the production of large forgings plays a vital role in national economic construction, defense, and cutting-edge scientific applications. As industries shift towards large-scale, high-standard equipment manufacturing, the demand for high-quality large forgings has increased. Among [...]
Stainless Steel Pipe De-greasing, Cleaning and Passivation I. De-greasing of Stainless Steel Pipes Before cleaning and passivating stainless steel pipes, they must undergo de-greasing to remove residual oils from the inner walls due to processing. Typically, industrial alcohol or dichlorodifluoromethane (CCL2F2) is used as de-greasing agents in pharmaceutical water systems. Most stainless steel pipes used in [...]
What Does NACE Mean? What Are NACE Standards and Their Applications in the Steel Pipe Industry? Annual Direct Economic Loss Due to Metal Corrosion Worldwide Every year, the direct economic loss caused by metal corrosion worldwide is estimated to be between 700billionand700billionand1 trillion. In the United States alone, corrosion losses amount to over $300 billion annually, [...]
What are the heat treatment processes for 42CrMo steel pipes? What is the corresponding hardness? 42CrMo is a commonly used alloy structural steel known for its excellent mechanical properties and heat treatment plasticity. It is widely applied in the manufacturing of mechanical components and engineering machinery. Heat treatment is one of the critical processes that enable [...]
What is Anti-Hydrogen Sulfide Corrosion Pipe Steel? In the petrochemical industry, hydrogen sulfide (H2S) corrosion is prevalent and highly hazardous. By analyzing the mechanism of H2S corrosion, this article introduces the forms of corrosion caused by wet H2S, including hydrogen blistering, hydrogen-induced cracking (HIC), sulfide stress corrosion cracking (SSCC), and stress-assisted hydrogen-induced cracking. It highlights the [...]