First, grinding is essential. The galvanized layer at the weld joint must be ground off; otherwise, bubbles, pinholes, and false welds will occur. It will also make the weld brittle and reduce its rigidity.Second, the welding characteristics of galvanized steel pipes. Galvanized steel pipes are gene

First, Steel Bend Processing1. Die Forging. For socket weld and threaded tees, crosses, elbows, and other small steel pipe fittings with more complex shapes, die forging should be used. The die forging blank should be a rolled profile, such as bar stock, thick-walled steel pipe, or plate. When using

1. The layout design should conform to the requirements of the process, petrochemical steel pipeline, and instrumentation diagram.2. The layout of petrochemical steel pipelines should be planned comprehensively, ensuring safety, reliability, and economic rationality, meeting the requirements of cons

Stainless steel pipe fittings classification: AP, MP, BA, EP AP < MP < BA < EPAP: Acid Pickling: Uses acidic solutions such as nitric acid and fluorine to remove the oxide layer from the steel pipe. Inexpensive and fast, but prone to causing intergranular corrosion and resulting in a rougher inner a

Large-diameter flanges are a type of flange widely used and promoted in the machinery industry, receiving praise and favor from users. Their applications are broad, determined by different characteristics, and they are often used in situations with relatively mild media conditions, such as low-press

Seamless steel pipes, as important transportation pipelines, are widely used in industries such as petroleum, natural gas, chemical, and power. During use, they must undergo rigorous testing to ensure pipeline quality and safety.The testing items for seamless steel pipes include shape, dimensions, s

First, What is a Flange?A flange, also called a flange plate or flange, is a disc-shaped metal body with several holes around its perimeter for connecting other components. It is widely used in various mechanical equipment and steel pipe connections. Flanges are connecting parts between shafts, used

Among the large family of stainless steel materials, 06Cr17Ni12Mo2Ti seamless stainless steel pipe has attracted much attention due to its unique properties and wide range of applications.Chemically, it contains various elements such as carbon: ≤0.08%, silicon: ≤1.00%, manganese: ≤2.00%, chromium co

First, Material Characteristics and Standard System of X90M Straight Seam Steel PipeX90M belongs to microalloyed high-strength pipeline steel. Its naming follows the American Petroleum Institute (API) 5L standard: "X" represents high-strength pipeline steel, "90" indicates a minimum yield strength o

First, Material Properties and Standard Specifications of Q420QD Straight Seam Welded Steel PipeThe naming of Q420QD straight seam welded steel pipe follows the provisions of the national standard GB/T 1591-2018 "Low Alloy High Strength Structural Steel":"Q420" indicates a yield strength of not less