FIBRE REINFORCEMENTS
& PREPREGS

COMPOSITES

RESINS
& ADHESIVES

VACUUM MATERIALS
& ANCILLARIES

TOOLS
& ANCILLARIES

TRAINING COURSES
ONLINE & HANDS-ON

EMPOWERING
YOUR SKILLS

We work on the forefront of innovation and technology to bring the best solutions all the way to the industry and the final consumer, always with a special focus in our clients support and training.

INDUSTRY

AREAS

THAT WE SUPPLY

INDUSTRY

AEROSPACIAL & AERONAUTICS

INDUSTRY

AUTOMOTIVE

INDUSTRY

MARINE

INDUSTRY

RENEWABLE ENERGIES

INDUSTRY

RAILWAY

INDUSTRY

SPORTS

INDUSTRY

CONSTRUCTION

INDUSTRY

ART & DECORATION

INDUSTRY

INDUSTRIAL CORROSION

WHO

WE ARE?

Leading the industry since 1968

CASTRO COMPOSITES is a company belonging to Resinas Castro S.L., dedicated to the commercialization of all types of products related to the composites sector (composite materials) for more than 25 years. We are specialists in thermosetting resins (polyesters, vinyl esters, epoxies, polyurethanes, silicones, etc.), reinforcement fibers (aramid, carbon, glass, etc.), and all complementary products involved in related applications: gel and top coats, putties, adhesives, cores for sandwich structures (PVC, PU, balsa wood, etc.), vacuum materials, etc. Our headquarters are located in the industrial estate "A Granxa," in Porriño (Pontevedra), a strategic place situated a few kilometers north of Portugal and just 15 km from Vigo, from where we serve our national and international customers.

Since our foundation, our goal has been to fully meet the present and future needs of our clients in the field of composites, placing a special emphasis on technical advice. We are particularly focused on the continuous improvement of our training courses to help our clients enhance the technical skills of their employees. Resinas Castro has adapted to the changing times, which is why we are committed to embracing new technologies, investing in research and development, and exploring new areas in the application of all our products.

Leading the industry since 1968

1968

Resinas Castro S.L. fundation date

2009

Launch of our first ecommerce site

2007

Skillful composites fundation date.

2015

Castro Composites brand born

2022

Launch of the Online Training platform

PRODUCTS

THAT

WE SUPPLY

RESINS

Thermosetting resins are polymers that react thanks to the addition of a catalyst or a hardener causing an exotherm reaction. This reaction can also be boosted by UV or IR radiations or just by a source of heat.

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GEL COATS & TOP COATS

A gelcoat is a material, based on a modified thermosetting resin, used to provide a high-quality finish on the visible surface of a fibre-reinforced composite that is used on mould during any of the common composite processes.

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ADHESIVES & PUTTIES

An adhesive is a product that, when applied to the surface of different materials, holds them together and prevents them from separating. Putties can also act as adhesives, but are primarily used as fillers in surface or structural finishing applications.

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PAINTS & VARNISHES

This section is specialized in advanced coatings and varnishes. We select for you all kind of materials on the basis of resistance to abrasion and weathering caused by outdoor weathering, as well as elasticity, adhesion to laminates and other surfaces.

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PRIMERS

The priming process is essential to obtain quality results and high resistance. At Castro Composites, we have a wide range of epoxy and polyester primers for any type of application.

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MOULD SILICONES

Silicone rubbers consist essentially of silicone polymers and fillers. They undergo high-temperature (HTV) or room-temperature vulcanization (RTV) with suitable reactants, during which the uncured compound in a plastic state is transformed into an elastomeric rubber with a three-dimensional structure.

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FIBRE REINFORCEMENTS

Castro Composites offers you a wide catalogue of fibre reinforcements, ranging form the more economic glass chopped strand mats to technical multiaxial glass fabrics, carbon fabrics, aramids (mainly Kevlar), high-molecular weight polypropylene fabrics (Innegra), natural fabrics (flax), as well as combinations of these materials.

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PREPREGS

Pre-preg is a term for "pre-impregnated" composite fibers where a matrix material, such as epoxy, is already present. The fibers often take the form of a weave and the matrix is used to bond them together and to other components during manufacture.

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PIGMENTS & ADDITIVES

In this section we offer all kind of curing additives necessary for the polymerisation of thermosetting polyester and vinylester resins, and their gel coats and top coats; as well as all kind of products to modify the the resins propierties: pigments, mineral or thermoplastic fillers and a complete range of solvents or their substitutes for the cleaning of brushes and rollers.

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PIPES & EDGES

In the section we offer a wide range of carbon fibre products: carbon fibre strips, rods, tubes, angles, U profiles, and many more. We offer a wide range of variable section carbon fibre profiles impregnated with high quality epoxy resins. You will find square, rectangular, flat and round profiles.

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VACUUM MATERIALS

In this section we offer process materials including vacuum bagging consumables, infusion materials and reusable vacuum systems. The processes in which these materials are used include prepreg processing, resin infusion, hand layup, filament winding, compression moulding of thermoplastic composites and glass lamination.

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SANDWICH CORES

A sandwich-structured composite is a special class of composite materials which is manufactured by attaching two thin but stiff skins to a lightweight but thick core. The core material is normally low strength material, but its higher thickness provides the sandwich composite with high bending stiffness with overall low density.

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TOOLS & ANCILLARIES

in this section we offer you scissors for cutting all types of fibres, external mixing cannulas for adhesive cartridges, manual or pneumatic guns for the application of Crestabond and Sika adhesives, as well as a wide range of other tools.

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MOLDS/PATTERNS PREPARATION

We offer you polyester and vinylester varnishes that can be sanded and polished, polishing and buffing pastes, MIRKA sanding and polishing machines, as well as all kinds of accessories for the use of these tools, such as foams and woollen polishing caps, pads and pads with suction, polishing plates, sandpaper, etc.

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RELEASE AGENTS & SEALERS

In this section you can purchase all kind of release agents: semi-permanent, waxes and polyvinyl alcohol. At Castro Composites we have focused on giving our customers the advice that more is not necessarily better when it comes to the application of release agents.

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TRAINING

COURSES

Online training courses on composite materials (Composites)

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Hands-On training courses on composite materials (Composites)

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WHAT OUR

CLIENTES SAY

"Castro Composites trainig course, led by Alejandro and his expert team, is superb in every aspect. Focused on the key theoretical knowledge to understand the use of composites. Intense in the realization of practices with very diverse products and technologies. In-depth presentation of experiences and details to be taken in order to obtain quality parts. Energetic, motivating and generous in transmitting the extensive knowledge accumulated by Castro Composites over its long history and interaction with customers. Taking this Best-in-Class course is an investment in success and satisfaction guaranteed. Congratulations to Castro Composites for offering such a complete and necessary course for companies and people interested in Composites".

"I had been looking for a training course on composite materials for some time and I was hesitating between the different offers I had found on internet. But when I saw the contents and methodology of the course together with the professional experience of the staff, I finally opted for Castro Composites. After an intense week of hands-on training course, the initial objectives have been more than fulfilled. The knowledge acquired, the different practices developed, and as well the technical and human support have lived up the expectations. A top training course, prepared in detail, where you come to learn from the first minute. 100% recommendable training course for anyone with concerns in the use of composite materials".

"A well-known slogan says: "Power without control is useless". In the same way, no matter how much enthusiasm and commitment you have, if there is no proper learning, your project will hardly succeed. In this aspect, the Castro Composites Composite Materials Course laid the foundations to channel all that energy in the right direction. With a solid and quality training the path has been much easier. After many months of self-taught work I decided to take their Composites courses. I was only one day into the course and already I realised how much time, effort and money I would have saved if I had done it earlier. If, like me, you want to make a living from composites, training is not recommended, it is essential. I will be eternally grateful to the Castro Composites team".

"Never the slogan of a company has been more accurate, "Empowering your skills" and if you didn't know you had them, they help you to discover them. From the first call I have felt welcomed by this company. The best money I have ever spent on training; great knowledge of the products and methods, excellent documentation, generous practices in terms of material and dedication. But if there is one thing I have to point out, it is the subsequent help of the post-course counselling, and there are some things you can't pay for with money. At a time like this, these are big words. And something very important for me, from a gender point of view, a treatment beyond excellence."

"I am currently working in AD Parts group training center. My job requires to me to be constantly training. My experience in the two courses, during more than 50 hours, was very positive, learning new things is always constructive, but when you do it with people who are professional, intelligent, with a healthy sense of humour, and above all good people, it makes the week fly by. I sincerely believe that the world of composite materials has a lot of opportunities in the job market. Another thing that I really appreciated is the attention they gave me when I had to ask any questions, they have no obligation to give guidance after the course and yet they do it with professionalism and kindness. Would I recommend Castro Resins courses? Without hesitation!".

"A huge thank you to CASTRO COMPOSITES for their enormously useful and enjoyable composites course taught at their headquarters in Porriño, Spain from the 24th-28th October 2022. Skydweller Aero employees have left with invaluable knowledge and with practical, hands-on experience on using carbon composites. Many thanks to Alejandro Castro de la Iglesia, Xaime Garcia and Esteban Gañete for making this course extremely useful and great fun at the same time!"

      EXCELENTE  
   A base de 179 reseñas 
    
 
 
 
   
 
 
       Publicado en Google  
    Mr Monipenny 
 
 
 
  Yesterday morning I ordered "Microbalones fenolicos" to be delivered from Castro Composites in Spain to me at my boat in Portugal. Today I had it delivered at 14 hrs in the afternoon. Incredible! Thank you very much, and especially Jose Luis, for an excellent service and that you took my urgency into consideration. Highly recommendable!
  
 
      Publicado en Google  
    Kristaps Puzaks 
 
 
 
  Very professional training course with a lot of theoretical and hands on experience. The guys lecturing are super friendly and knowledgeable.
  
 
      Publicado en Google  
    Patriks Āboliņš 
 
 
 
  I enjoyed the course a lot, met interesting and friendly people as well as gained valuable knowledge and experience
  
 
      Publicado en Google  
    JUAN CARLOS CONTERO LOAHIZA 
 
 
 
  Curso muy bien aprovechado tanto teórico como práctico.
Grandes profesionales.
Lo recomiendo.
  
 
      Publicado en Google  
    Esteban Peña 
 
 
 
  IMPRESIONANTE. Para mi ha sido abrumador. El nivel de conocimientos , la manera de enfocar el curso, la personalidad de Alejandro y su capacidad para llevar de forma amena la parte teórica, la calidad técnica y humana de Xaime y Esteban, LA COMIDA (brutal el nivel de las meriendas de la mañana y de la comida  al mediodia). Pero en definitiva, debería ser un curso casi obligatorio para todo aquel que quiera dedicarse al composite en cualquiera de sus ámbitos.  Me muero de ganas de empezar el próximo curso de carbono. Y todos los que pongan a disposición.  No pienso perderme ni uno. Aconsejo totalmente a todos los que vayan a trabajar composites que hagan estos cursos. Suponen un punto de inflexión total.
  
 
      Publicado en Google  
    Muhammad Hafiz Hassan 
 
 
 
  good training and really helpfull.
  
 
      Publicado en Google  
    Andrés 
 
 
 
  Hice un pedido con ellos a través de la web. A los 2 días lo tenía en casa y todo perfecto
  
 
      Publicado en Google  
    Alba Peña 
 
 
 
  La semana pasada tuve la oportunidad de asistir al Curso General en Materiales Compuestos impartido por CASTRO COMPOSITES.
Un curso que, sin duda alguna, merece la pena de principio a fin. Sus clases dinámicas y la minuciosa selección de los contenidos, hacen que las horas vuelen.
Un curso que cuenta con los mejores profesionales que te hacen ser el/la protagonista de las diferentes prácticas que se desarrollan en él.
Y, sobre todo, un curso donde conocer a grandes personas y compañeros/as de diferentes nacionalidades y sectores; y que enriquecen, todavía más, esta gran experiencia.
  
 
      Publicado en Google  
    Angel Andre 
 
 
 
  Curso de Fabricación de fibra de Carbono 100% recomendable. Curso de gran valor y de mucho aprendizaje para cualquier perfil profesional, que quiera tener unos conocimientos sólidos y fundamentados sobre la fabricación de composites de Fibra de Carbono. Impartido por un gran profesional con gran conocimiento como Alejandro Castro, rodeado de buenos profesionales  en la parte práctica como Xaime y Esteban.