TESTCOAT LTD SERVICES
BLAST-PAINT-INSPECTION
BLAST CLEANING
Specifications
Surface preparation is the essential first stage treatment of a steel substrate before the application of any coating, and is generally accepted as being the most important factor affecting the total success of a corrosion protection system.
The performance of a coating is significantly influenced by its ability to adhere properly to the substrate material. Residual millscale on steel surfaces is an unsatisfactory base to apply modern, high performance protective coatings and is therefore removed by abrasive blast cleaning. Other surface contaminants on the rolled steel surface, such as oil and grease are also undesirable and must be removed before the blast cleaning process.
The surface preparation process not only cleans the steel, but also introduces a suitable profile to receive the protective coating.
ANTI CORROSIVE COATINGS
Specifications
Anti-corrosion coatings are used to protect metal surfaces from corrosion and rust. There are three main types of anti-corrosion coatings: barrier, inhibitive, and sacrificial1. Barrier coatings form a protective non-porous layer over a substrate that prevents the surrounding environment from affecting the base metal1. Inhibitive porous coatings form a passive layer on a substrate that reacts with metal and humidity as it penetrates the film2. Sacrificial coatings act as an additive over a substrate which sacrificially corrodes to protect the material below2. The choice of anti-corrosion coating depends on several factors, including the type of metal, the job it is required to perform, and the frequency with which the component is exposed to corrosion1. It is important to consult with a professional in the field to determine which type of anti-corrosion coating is most appropriate for your specific project.
VALVE COATINGS
Specifications
- Ther are some common types of paint used for valve painting:
- Fusion bonded epoxy coating
- Phenol-modified alkyd resin paint
- Synthetic resin aluminum paint
- Solvent-based inorganic zinc
- Silicone acrylic
- Modified alkyd resin primer
- Silicone-modified alkyd resin paint
INSPECTION
Mechanical & Coating Inspections
ISO: 9001 Accredited Inspections
NACE - ICORR Approved
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