Surface Treatment Services
Pickling, Passivation, and Coil Coating Solutions for Enhanced Corrosion Protection and Superior Finish Quality
Steel Coil Cutting Services for Precision and Efficiency
COIL Pickling & Cleaning
COIL Passivation
COIL Coating
At Hengze Steel, we provide advanced steel surface treatment solutions that improve corrosion resistance, durability, and appearance while preparing materials for further processing. Our fully automated lines guarantee consistent quality and customized performance for applications such as roofing sheets, structural parts, and industrial products.
Our treatments include pickling to remove scale and clean steel for better coating adhesion; passivation to add a protective layer that prevents rust and extends storage life; oiling to apply a thin film that guards against oxidation; coil coating with durable finishes like PE and PVDF to ensure UV and weather resistance; phosphate coating to enhance corrosion protection and paint adhesion; and specialty coatings designed to resist fingerprints, static, and wear, ideal for indoor use.
Pickling & Cleaning
Our pickling and cleaning line removes scale, oxides, and surface impurities from steel coils using chemical or EPS methods. This process ensures metallic cleanliness, enhances coating adhesion, and improves corrosion resistance for downstream applications.
Material Thickness: 0.5–6.0 mm
Coil Width: up to 2000 mm
Materials: Hot Rolled Steel, Cold Rolled Steel, Galvanized Steel, and High-Strength Steel
Applications: Roofing sheets, structural components, automotive panels, and precision-fabricated products
Passivation
Our passivation line applies chromate or non-chromate layers to steel surfaces, preventing oxidation and improving storage durability. This process reduces white rust, extends shelf life, and provides an ideal surface for oiling, painting, or coil coating in industrial and construction applications.
Material Thickness: 0.3–3.0 mm
Coil Width: up to 2000 mm
Materials: Galvanized Steel, Galvalume Steel, Stainless Steel, and Pre-painted Steel
Applications: Roofing and cladding panels, industrial machinery, and transportation equipment
Coil Coating
Our coil coating line applies PE, SMP, PVDF, or specialty coatings to steel and aluminum substrates. It offers excellent UV resistance, color retention, and long-term weather protection while ensuring consistent finish quality for roofing, appliances, and decorative panels.
Material Thickness: 0.2–2.0 mm
Coil Width: up to 1600 mm
Materials: Galvanized Steel, Galvalume Steel, Aluminum, and Cold Rolled Steel
Applications: Roofing sheets, wall cladding, appliances, and decorative metal panels
Why Choose Hengze Group for Surface Treatment?
Customized Solutions tailored to material type, coating system, and end-use requirements.
Broad Material Compatibility including Cold Rolled, Hot Rolled, Stainless, Galvanized, Aluminum, Silicon Steel, and Pre-painted substrates.
Consistent Quality through automated coil coating and precision process control.
Enhanced Performance for forming, bending, welding, and long-term service life.
