Sandblasting & Shotblasting Services for Steel Surface Preparation
At United Steel Industries, we offer professional sandblasting and shotblasting services designed to remove rust, scale, and old coatings from steel surfaces, creating a clean, textured profile ideal for painting, galvanizing, or coating. Whether you need mild steel plates cleaned for fabrication or epoxy coating-ready rebars, our blasting services ensure a superior surface finish with consistent roughness and adhesion properties.
We handle mild steel, alloy steel, pipes, plates, channels, angles, TMT bars, and other structural materials, preparing them for further processing or delivery.
What is Sandblasting / Shotblasting?
- Sandblasting (abrasive blasting) and shotblasting are mechanical surface treatment processes that use high-velocity media — such as grit, sand, or steel shots — to clean and profile metal surfaces.
- Sandblasting: typically uses angular grit (like garnet or silica) for finer surface cleaning.
- Corrosion Resistance: uses round steel or iron shots to remove heavier rust and scale while work-hardening the surface. Both methods are essential for ensuring strong adhesion of coatings like epoxy, zinc galvanizing, or powder coating, and for prolonging the lifespan of steel in industrial, marine, and outdoor environments
Why Surface Preparation Matters
- Steel exposed to open air begins oxidizing rapidly. Rust, mill scale, grease, and moisture contamination can ruin coating performance if not removed correctly. Sandblasting or shotblasting provides:
- Rust & scale removal
- Adhesion profile creation for coatings
- Consistent surface roughness (Rz/Ra)
- Enhanced lifespan of epoxy, zinc, and paint layers
What Materials Do We Blast?
- We work on a wide range of steel and alloy products, including:
- MS Plates / Alloy Steel Plates: E250 / E350, EN8, P20, OHNS
- Pipes & Tubes : For structural, fencing, or process piping
- Channels / Angles / Flats: For construction and fabrication
- TMT Rebars: For epoxy or FBE coating preparation
- • Beams, Rails, and Structural Steel
- Pre-fabricated steel structures and components
Our Blasting Specifications
- Blasting Grade: SA 2.5 / SA 3 (as per ISO 8501 / SSPC standards)
- Roughness: Adjustable based on end-use (typical Ra: 25–75 microns)
- Media Used: Steel shots, steel grits, copper slag, garnet
- Max Dimensions Handled: Plates up to 3000mm wide and 12m long; custom jobs accepted
- Post-Blast Options: Pickling, primer application, oiling, or packaging for delivery
Industries We Serve
- Construction & Infrastructure
- Fabrication Shops & OEMs
- Shipbuilding & Marine
- Oil & Gas / Pipeline Contractors
- Steel Coating & Painting Contractors
- Heavy Machinery Manufacturers
Common Applications of Sandblasting
- Preparing steel plates before epoxy / FBE coating
- Cleaning rusted steel beams for galvanization
- Texturing GI sheets or HRPO coils for better paint grip
- Stripping old paint from steel components
- Surface prep before powder coating or fireproofing
Why Choose United Steel for Sandblasting?
- 🛠️ Decades of steel processing experience since 1970
- 🧱 In-house capability to blast large volumes of cut plates, pipes, rebars, and coils
- 🚛 Logistics support across Chennai, Ennore, Sri City, and South India
- 🎯 Consistent surface finish tailored to your downstream process
- 🔄 End-to-end solutions: from sandblasting to epoxy, powder, or galvanizing coating
Ready for Clean, Coating-Ready Steel?
- Our team can blast your steel to your specification, schedule, and surface profile needs. Whether you're prepping for powder coating or rust-proofing materials before offshore deployment, we deliver the results that matter.
Contact United Steel Industries today for blasting solutions that go beyond just cleaning.