We Super Steel Manufacturing Co.,Ltd(SMC) are amongst the top manufacturers and suppliers for the seamless steel pipe, welded steel pipe, OCTG products and fittings from China. We have been manufacturing and supplying these products to the industry since 1993, and received repeat orders and appreciation from our valued customers.
High quality piping products from approved manufacturers.
In order to continuously improve our offerings to our clients, we have consistently improved and upgraded our manufacturing facility and can hence offer material with stringent requirements.
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The many years of experience that we have means that there is always someone who has the ability to carry a project forward.
Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.
The processing of stainless steel welded pipes can lead to various changes both inside and outside the pipes. As a professional manufacturer, Super Steel has compiled some useful insights regarding the processing of stainless steel welded pipes for your reference.
Stainless Steel Welded Pipe Welding:
Before starting the welding process, it’s essential to thoroughly clean the pipes by removing rust, oil, water, paint, and other contaminants that could negatively impact welding quality. An appropriate electrode for the specific steel grade should also be chosen. The time interval for welding stainless steel is shorter than for carbon steel in spot welding processes. After welding, it’s crucial to use a stainless steel wire brush to remove welding slag. Additionally, to prevent localized corrosion or strength degradation, the welded surface should be polished or cleaned after completion.
Cutting and Stamping of Stainless Steel Welded Pipes:
Due to the higher strength of stainless steel compared to general materials, greater pressure is needed for cutting and stamping operations. If the gap between the cutting tools is precise, issues like poor shearing or work hardening will not occur. Plasma or laser cutting methods are often used. When gas cutting or arc cutting is necessary, the heat-affected zone should be polished, and heat treatment may be required to ensure optimal results.
Bending Stainless Steel Welded Pipes:
Thin stainless steel plates can be bent up to 180 degrees. However, to minimize cracking on the curved surface, the radius for bending stainless steel welded pipes should be two times the thickness of the plate in the rolling direction. For bends perpendicular to the rolling direction, a radius of four times the thickness is recommended. Special attention should be given to the welded area, which should be ground to avoid cracks during bending.
Key Points for Stainless Steel Welded Pipe Construction:
To avoid scratches and the adhesion of contaminants during construction, stainless steel welded pipes are often processed with a protective film. However, over time, paste residues may remain on the surface depending on the film’s lifespan. After removing the protective film post-construction, the surface should be washed thoroughly, and only specialized stainless steel tools should be used for cleaning. It is important to ensure that highly corrosive substances or cleaning agents do not come into contact with the pipe surface. If they do, the pipes should be cleaned immediately. After construction, a neutral detergent and water should be used to wash off materials such as cement and fly ash that may have accumulated on the surface.
By following these guidelines, you can maintain the quality and integrity of stainless steel welded pipes during processing and construction.
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