Reports indicate weak demand in South Korea's color-coated steel sheet and steel pipe market. Currently, steel mills are pricing at KRW 1.15 million/ton, while the market circulation price is slightly above KRW 900,000/ton, representing a 20% discount. Considering the price of galvanized steel sheet at KRW 890,000/ton, color-coated steel sheets are essentially unprofitable. Steel pipes are no exception, with high discount rates currently applied; around 15% for fluid pipes and around 20% for structural pipes. Despite this, the sluggish sales situation remains unchanged. It is understood that the current capacity utilization rate for color-coated steel sheets and steel pipes in South Korea is below 80%, severely impacting normal production due to high inventory levels. Furthermore, the two industries...

A press conference on the implementation of the China Environmental Mark Low-Carbon Cement Standard and the awarding ceremony for the first batch of pilot enterprises certified for China Environmental Mark Low-Carbon Cement Products was recently held in Beijing. Fourteen cement companies, including China Materials Zhuzhou Cement Co., Ltd., China Materials Changde Cement Co., Ltd., China National Building Material Group Co., Ltd. Changshan Southern Cement Co., Ltd., and Chongqing Lafarge Riandiwei Cement Co., Ltd., received the title of the first batch of pilot enterprises certified for China Environmental Mark Low-Carbon Cement Products. In order to promote further development of the cement industry towards low-carbon, environmentally friendly, and sustainable development, and to reduce

With the rapid development of electronic technology, especially microelectronics, computer technology, and ultrasonic transducer technology, ultrasonic phased array and TOFD detection technologies have emerged in recent years and become the trend in ultrasonic flaw detection. Ultrasonic phased array integrates multiple elements (e.g., 32, 64, 128) into one transducer. The excitation time of each element can be adjusted individually. By controlling parameters such as the sound beam axis and focus, an array of transducer elements is formed to achieve a full cross-sectional scan of the weld. TOFD (Time Of Flight Diffraction) is a technique that relies on signals diffracted from internal structures (mainly...

Coated steel sheets are lightweight, aesthetically pleasing, and have good corrosion resistance. They can also be directly processed, providing a new type of raw material for the construction, shipbuilding, vehicle manufacturing, furniture, and electrical industries. They offer benefits such as replacing wood with steel, efficient construction, energy savings, and pollution prevention. Colored coated steel sheets using galvanized steel sheets as a base material have zinc protection, and the organic coating on the zinc layer provides a covering and isolating effect, preventing the steel sheet from rusting and extending its lifespan compared to galvanized steel sheets. It has been reported that the lifespan of coated steel sheets is 50% longer than that of galvanized steel sheets. However, in different regions and applications, using the same

The advantages of steel structures, such as earthquake resistance, wind resistance, durability, heat insulation, sound insulation, and comfort, are well-known. These advantages rely on the hard work of steel structure builders. After the completion of steel structure construction, safety inspection of the steel structure project is crucial. Here's a detailed introduction to the key points of steel structure inspection, hoping it will be helpful: 1、Construction 1.1 Detection and calculation of the slenderness ratio of steel structural members. Member dimensions can be determined according to the provisions of Section 6.4 of this chapter, and the slenderness ratio of the members should be calculated based on the actual dimensions. 1.2 Connection of steel structure support system,

First, high-quality substrates are used, with increasingly higher requirements for the surface, shape, and dimensional accuracy of the substrates. Outdoor uses include small zinc flower flat hot-dip galvanized steel coils, zinc-free flower flat hot-dip galvanized steel coils, and the currently popular zinc alloy hot-dip coils; indoor uses include electrogalvanized steel coils, film-coated cold-rolled sheets, and aluminum coils. Second, the pretreatment process and pretreatment solution are improved, with fewer equipment and lower costs becoming the mainstream process, constantly improving the stability, corrosion resistance, and environmental performance of the pretreatment solution. Third, the development of new coatings is emphasized, and improvements are made to general polyester, polyvinylidene fluoride (PVDF), and plastic sols to obtain super color reproducibility and resistance.

Green buildings refer to buildings that, throughout their entire life cycle, maximize resource savings (energy, land, water, and materials), protect the environment, reduce pollution, and provide people with healthy, usable, and efficient spaces that coexist harmoniously with nature. Green buildings encompass planning, construction, and operation of solutions that are more efficient, healthier, and more sustainable than traditional solutions throughout all phases of the building lifecycle, while maintaining the same level of comfort and service. China currently has more than 50 billion square meters of existing buildings, while 1.6 to 2 billion square meters of new buildings are constructed each year. More than 95% of buildings in China are...

Steel structure welding specifications: Steel structure fabrication involves processes such as material preparation, assembly, welding, and inspection. Manual arc welding construction process standards are based on the following standards: GB50300-2001 "Unified Standard for Quality Acceptance of Building Construction", GB50205-2001 "Code for Quality Acceptance of Steel Structure Engineering Construction", GB11345 "Methods for Ultrasonic Testing of Steel Welds and Classification of Test Results", GB3323 "Radiographic Testing of Fusion Welded Joints in Steel and Quality Classification", JBJ/T3034.1 "Ultrasonic Testing Method and Quality Classification of Welds in Bolted Spherical Node Steel Trusses". Note: The provided text contains some technical terminology which may require further clarification in the translated context. The original Chinese text is retained for those sections.