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Our Phosphated Steel Pipes are treated with a phosphate coating to provide
Our Phosphated Steel Pipes are treated with a phosphate coating to provide
Our Phosphated Steel Pipes are treated with a phosphate coating to provide:
·Enhanced corrosion resistance
·Improved paint and coating adhesion
·Reduced friction and wear during assembly
These pipes are widely used in:
·Automotive frames and components
·Structural steel applications
·Industrial machinery
·Painted or coated pipelines and frameworks
Key Features
·Phosphate surface treatment for corrosion resistance
·Pre-treated for painting and coating adhesion
·Steel grades: S235, S275, ST52, or custom grades
·Custom OD and wall thickness available
·Can be welded, machined, or bent
Technical Specifications Table
|
Parameter |
Specification |
|
Material / Steel Grade |
S235, S275, ST52 (custom grades available) |
|
Outer Diameter (OD) |
Customizable, standard and metric sizes |
|
Wall Thickness |
1.5 – 12 mm |
|
Surface Treatment |
Phosphate coating |
|
Corrosion Resistance |
Excellent (prevents rust, improves adhesion) |
|
Surface Finish |
Uniform, ready for painting or coating |
|
Length |
Up to 12 m, cut-to-length available |
Manufacturing Process
1. Steel pipe selection and preparation
2. Cleaning and pickling of the surface
3. Phosphate bath treatment for corrosion protection and coating adhesion
4. Drying, optional oiling or painting
5. Inspection for coating uniformity and adhesion
Applications
·Automotive chassis and frames
·Industrial machinery and equipment
·Construction pipelines and frameworks
·Painted or coated steel structures
·Machinery requiring corrosion protection before painting
Advantages
·Improved corrosion resistance
·Optimized paint adhesion for long-lasting coatings
·Compatible with welding, machining, and bending
·Reduces surface friction and wear
·Supports custom sizes and steel grades
Suao is a professional manufacturer of high-precision cold drawn steel tubes, hydraulic tubes, and mechanical structure tubes, integrating R&D, production, inspection, and global sales. We operate two major production facilities covering over 36,000 square meters, with more than 200 employees and an annual output of 50,000+ tons, supplying customers across major industrial markets worldwide. As Suppliers of Phosphated Steel Pipe – Anti-Corrosion, Pre-Treated for Paint Adhesion, Structural & Industrial Use, our integrated manufacturing capabilities include cold drawing, heat treatment, straightening, finishing, cutting, chamfering, and surface treatment. These are supported by a full range of advanced equipment for non-destructive testing, chemical analysis, and online dimensional monitoring—ensuring every tube meets stringent quality standards. We invest continuously in automation and smart manufacturing systems to enable flexible, high-mix, low-volume production. Custom Phosphated Steel Pipe – Anti-Corrosion, Pre-Treated for Paint Adhesion, Structural & Industrial Use. Our products are widely used in construction machinery, hydraulic systems, automotive parts, wind energy, shipbuilding, railways, and oil & gas sectors. Certified to ISO 9001, ISO 14001, CE, and RoHS standards, Hongli is more than a manufacturer—we are a trusted long-term partner for global industrial clients.
Established In
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