Independently Innovated Controlled Rolling and Cooling Technology and Equipment for Pipes, Leading the Technological Upgrade of Steel Pipe Production
Hot-rolled seamless steel pipes are irreplaceable, high-safety basic raw materials used in nuclear and thermal power, oil and gas drilling, equipment manufacturing, and other fields. However, due to the high-temperature hot rolling process and the annular cross-section, the controlled rolling and cooling (CR+CC) technology, which is widely applied in the plate industry, is difficult to apply in hot-rolled seamless [...]
Baosteel Launches Domestic First: 98mm Extra-Thick, Ultra-Wide, High-Performance S31603 Stainless Steel Plate for Pressure Vessels
Baosteel Launches Domestic First: 98mm Extra-Thick, Ultra-Wide, High-Performance S31603 Stainless Steel Plate for Pressure Vessels According to Baowu Steel Group, Baosteel’s Heavy Plate Business Unit recently successfully delivered a domestically first-of-its-kind 98mm thick, 3000mm wide, extra-thick, ultra-wide, high-performance S31603 stainless steel plate for pressure vessels, rolled directly from large steel ingots. With the implementation of the national "14th Five-Year Plan" [...]
Medium-Frequency Hot Expansion Process for Seamless Steel Pipes
The medium-frequency hot expansion process is applied to large-diameter seamless steel pipe production. It was unprecedented in the industry at the time and not initially accepted by the domestic market. As the first to adopt this technology, the company faced significant resistance during the initial product launch and promotion. The company's chairman took an innovative approach by first entering the [...]
Introduction to Seamless Steel Pipe Standards
Introduction to Seamless Steel Pipe Standards 1. Structural seamless pipes (GB/T8162-2008) are used for general structural and mechanical purposes. 2. Fluid transport seamless steel pipes (GB/T8163-2008) are for transporting water, oil, gas, and other fluids. 3. Low and medium pressure boiler seamless steel pipes (GB3087-2008) are used for manufacturing various low and medium pressure boiler superheated steam pipes, boiling [...]
The Crucial Role of Finishing and Flaw Detection in Steel Production
01 What is finishing? Finishing refers to a series of operations performed after product rolling to meet the final requirements of users regarding surface quality, dimensions, shape, and certain performance aspects of the product. It mainly includes flame cleaning, cooling after hot processing, cutting, straightening, physical detection of defects, grinding, marking, packaging, and other processes. 02 What is the purpose [...]
Discussion on Manufacturing Technology of Ultra-Long, Ultra-Thin, Large-Diameter Seamless Steel Pipes
An ultra-long, ultra-thin seamless steel pipe forging has the following specifications: length ≥11000mm, raw pipe wall thickness ≤25mm, finished wall thickness: 15+0.50mm, outer diameter: 800+10mm. This product is widely used in the preparation of blanks for spin forming processes in certain aerospace products. The manufacturing of such ultra-long, ultra-thin, large-diameter seamless steel pipes, especially the control of technical parameters during [...]