Corrosion-resistant steel pipes are those that have been processed through anti-corrosion techniques, effectively preventing or slowing down the corrosion phenomena caused by chemical or electrochemical reactions during transportation and use. According to Chinese statistics, the direct economic loss from steel pipe corrosion domestically exceeds 280 billion yuan annually.
Current global annual losses due to steel pipe corrosion total up to $500 billion. Corrosion-resistant steel pipes can effectively prevent or slow down corrosion, extending the service life of steel pipes and reducing their operational costs.
Categorized by manufacturing process
The manufacturing processes for seamless steel pipes can be divided into the basic categories: hot rolling (extrusion), cold rolling (drawing), and hot expanded pipes.
(2) Welded pipes can be categorized by manufacturing process into: straight seam welded pipes, spiral seam welded pipes, plate-to-roll butt-welded pipes, and hot-expanded welded pipes.
Categorized by shape
Steel pipes can be categorized by shape into: round pipes, square pipes, rectangular pipes, octagonal pipes, hexagonal pipes, D-shaped pipes, pentagonal pipes, and other special-shaped steel pipes, complex cross-section pipes, double concave pipes, five-petaled plum blossom-shaped pipes, conical pipes, corrugated pipes, melon-shaped pipes, double convex pipes, etc.
Categorized by usage
Steel pipes are categorized by their applications, including: pipeline steel pipes, heat exchanger steel pipes, mechanical industry steel pipes, oil and geological drilling steel pipes, container steel pipes, chemical industry steel pipes, and special purpose steel pipes, etc.
Corrosion Prevention Standards
FBE epoxy powder coating conforms to SY/T0315—2005 "Technical Specification for Single-layer熔结Epoxy Powder Coating on Steel Pipelines"
2PE/3PE Corrosion Protection Complies with GB/T 23257-2009 "Technical Standard for Polyethylene Coating on Buried Steel Pipe"
Corrosion Inhibiting Surface Rust Standard: Steel pipe outer surface blasting rust removal in accordance with GB/T8923-2008 requirements to reach Sa2 1/2 grade, with anchor pattern depth on the steel pipe surface between 40-100μm.
Steel pipes, through anti-corrosion treatment, not only extend their service life but also are characterized by the following aspects:
Combining the mechanical strength of steel pipes with the corrosion resistance of plastic.
2. The outer wall coating is over 2.5mm thick, providing resistance to scratches and impacts.
3. The inner wall friction coefficient is low, ranging from 0.0081 to 0.091, which reduces energy consumption.
4. Interior walls meet national sanitation standards.
5. The inner wall is smooth and resists scaling, featuring an auto-cleaning function.
