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A global leader in door frame assemblies, extrusion and trim molding applications.

Katayama has a long-standing legacy of excellence in precision engineering, manufacturing, and craftsmanship across global facilities. As a leading supplier of door frame assemblies, extrusion, and trim molding applications, we utilize advanced automation and in-house expertise to deliver high-quality solutions for the automotive industry.

Door Frame Assemblies

Lighter and stronger.

Katayama designs and manufactures door frame components that provide top-tier structural integrity, weather resistance, and aesthetic appeal, all tailored to meet the exacting demands of automotive OEMs.

Trim Molding and Extrusion Applications

Superior aesthetic, performance and durability.

Katayama's advanced manufacturing capabilities, supported by automation and rigorous quality control, enable the production of high-quality trim molding and extrusion products, including window, door and roof moldings made from thermoplastics and stainless steels.

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Door Frame Applications

Extrusion & Trim Molding Applications

Upper Sash Complete Assemblies
Designed to meet the highest standards of fit and finish, ensuring vehicle door frames are both resilient and lightweight.
We supply an extensive range of leading automotive OEMs with a variety of sash assemblies. Crafted to meet the highest fit and finish standards, our door sash assemblies provide lighter and stronger vehicle door frames. Advanced robotic welding and metal finishing applications ensure adherence to stringent requirements.
Lower Sash Complete Assemblies
Engineered to meet rigorous standards while providing robust structural integrity for vehicle doors.
Our lower sash assemblies are manufactured with a focus on strength and superior fit, employing cutting-edge robotic welding and metal finishing processes. We are trusted by top automotive OEMs for delivering assemblies that meet exacting specifications, contributing to enhanced vehicle performance and safety.
Glass Guide Channels
Engineered with precision to complement your vehicle’s glass components for smooth operation and optimal fit.
We leverage advanced manufacturing techniques, including roll forming and automated welding of supplementary brackets and fasteners, to produce glass guide channels that offer exceptional alignment and quality. Our expertise extends from design to engineering, creating tailored solutions that meet the exacting demands of automotive manufacturers, ensuring seamless integration with the vehicle's glass system for an unparalleled finish.
Sash Moldings
Premium exterior trim designed for both style and durability, elevating vehicle aesthetics with an enhanced finish.
Our sash moldings enhance the polished look of door windows with sleek chrome and gloss black finishes, delivering the highest level of precision and quality in every piece.
Weatherstrip Inners
Multi-resin extrusion and 3D bending for optimal performance and appearance.
Manufactured to meet stringent appearance and dimensional specifications. Using a cutting-edge multi-resin extrusion process, we ensure impeccable appearance and optimal functionality. Utilizing our 3-dimensional bending technique for precise conformity to your vehicle's contours.
Beltline Moldings
Noise reduction with durable exterior finishes like chrome and high-gloss black.
Our beltline trim moldings not only minimizes noise intrusion and defends against external elements, but also provides your design study several trim options such as chrome or high gloss black. With materials like thermoplastics and chrome, our customized molding seamlessly fits into vehicles, ensuring quality, durability, and a commitment to enhance your vehicle's style.
Roof Moldings
Our precision moldings seamlessly bridge roof and side panels. Functionality meets aesthetics in our reliable manufacturing process, ensuring easy installation and integration into various car models.
Engineered with precision, our moldings, made from versatile TPE materials, provide flexibility and durability, undergoing rigorous testing to exceed customer specifications.
Windshield Moldings
Crafted to ensure a quieter, more enjoyable ride with all-weather protection.
Superior protection and reduced wind noise. As a fundamental barrier against the elements, our Windshield Moldings prevent water ingress, proving indispensable in adverse weather.
Seat Rail Covers
Conceal, protect, and enhance. Designed for maximum durability and style while safeguarding seat adjustment rails.
Made to conceal and safeguards the seat adjustment rails. Our seat rail covers provide maximum protection, aesthetic and functionality.

Building lasting partnerships through
a commitment to quality, delivery and cost excellence.

Quality

Katayama ensures the highest standards of precision and craftsmanship, consistently delivering products that meet exact specifications.

Delivery

We are committed to reliable, on-time delivery, ensuring that every project stays on track and meets production schedules.

Cost

Our focus on efficiency and innovation allows us to provide competitive, cost-effective solutions without compromising on quality.

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