Hot-rolled steel seamless pipes are the most common format successfully used in all national economic sectors. These products are known for the greatest reliability, especially for laying communications for various purposes. Most often, a seamless hot-deformed steel pipe GOST 8732-78 is used in the

GOST 8734-75 defines the dimensional and technical requirements for cold-formed seamless steel pipes, covering products with an outer diameter from 1 mm to 200 mm and a wall thickness from 0.2 mm to 22 mm.The cold-forming process provides high-dimensional precision, an improved surface finish, and e

The process begins with pretreatment of the base pipe: grinding the steel pipe (advantages: automatic spraying ensures uniform coating on both inner and outer walls, good leveling, meeting CJ/T120-2008 and GB/T5135.20-2010 standards); preheating the ground steel pipe in an electric oven to 230°C~250

The materials used in the anti-corrosion processing of spiral welded steel pipes play a decisive role in the quality of the anti-corrosion steel pipes. During the anti-corrosion process, the raw materials must be strictly tested, as different anti-corrosion processes require different anti-corrosion

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