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.
Over the years, Super Steel Manufacturing Co.,Ltd(SMC) has developed an enviable reputation for project management for the Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical and other heavy industries.
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.
To ensure optimal performance and durability, spiral welded pipes undergo various surface treatment methods. These treatments are critical for enhancing corrosion resistance and preparing the pipes for further processing. Below are the commonly used methods.
Cleaning
Solvents and emulsions are applied to clean the surface of spiral welded pipes, effectively removing oil, grease, dust, smoothing agents, and other organic contaminants. However, this method does not eliminate rust, oxide scale, flux, or other inorganic substances on the steel surface. It is typically used as a supplementary step in the anti-corrosion treatment of spiral welded pipes.
Rust Removal Tools
Wire brushes are employed to polish the surface of spiral welded pipes, removing loose scale, rust, welding slag, and similar impurities. Manual rust removal tools can achieve a surface preparation level of SA2, while power tools can reach SA3. However, these tools are less effective when dealing with firmly attached iron oxide scales on the pipe surface.
Pickling
Pickling involves chemical or electrolytic processes, with chemical pickling being more common. This method removes oxide scale, rust, and old coatings, often serving as a precursor to sandblasting. While chemical pickling ensures the required level of cleanliness and roughness, it produces a relatively shallow anchor pattern, which may leave the surface prone to contamination.
Abrasive Blasting
In this process, a high-powered engine rotates a spray (or throwing) blade at high speed, projecting abrasives such as steel grit, steel shot, wire segments, or minerals onto the pipe surface using centrifugal force. This method not only removes rust, oxides, and dirt thoroughly but also creates a rough surface texture through abrasive impact and friction. The resulting surface improves the mechanical adhesion between the anti-corrosion coating and the pipe.
Abrasive blasting is particularly effective for both internal and external pipe treatments. Sandblasting is primarily used for internal surfaces, while shot blasting is preferred for external surface preparation.
These methods play an essential role in ensuring the structural integrity and longevity of spiral welded pipes in various applications.
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