September 30, 2021

Common quality problems of steel pipes

The common quality problems of steel pipes are divided into the following categories: 1. The internal and external quality of steel pipes; 2. Quality problems of geometric dimensions; 3. Unqualified quality problems of physical and chemical properties; 4. Quality problems of tubing and casing threads; 5. Quality problems of users […]
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September 22, 2021

The manufacturing process and popularization and application of thick-walled pipe

Hot rolled (Extruded seamless steel pipe): round tube billet → heating → piercing → three-roll cross rolling, continuous rolling or extrusion → stripping → sizing (or reducing) → cooling → straightening → hydraulic test (or flaw detection) →Marking→Warehousing The raw material for rolling seamless pipes is round pipe blanks. The […]
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September 15, 2021

The steel market soars by 600, and the rhythm changes. pay attention to heavy data

Last week, the domestic futures market prices accelerated, especially the rapid performance of the futures market, with the highest price increase of nearly 600 yuan at one time!   Among them, under the blessing of production restriction and safety production and other favorable factors, Bijiao has repeatedly set record highs, […]
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September 8, 2021

Damage and repair of oil and gas well casing

Oil casing is the lifeline to maintain the operation of oil wells. Due to different geological conditions, the downhole stress state is complex, and the combined action of tensile, compressive, bending and torsion stresses on the pipe body, which puts forward higher requirements on the quality of the casing itself. […]
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August 30, 2021

Steel market “Golden Nine” peak season is approaching, the market bottoming out and rebounding soon?

The recent analysis of the monetary and credit situation by relevant financial institutions believes that domestic economic recovery still needs to maintain stable credit growth, moderate monetary growth should support high-quality economic development, help small and medium-sized enterprises and difficult industries continue to recover, and serve the revitalization of rural […]
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August 25, 2021

Technical requirements for hot-dip galvanized steel tubes

Hot-dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after the pickling, it is cleaned in a tank of ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc […]
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