55 / 65 Thermal-Break Casement Door Series
Products are supplied through qualified partner manufacturers in China. Applicable manufacturer certificates and scope are confirmed for each model and order. Delivery destinations and terms are confirmed against documented order requirements. Project-specific manufacturer authorization and applicable quality and compliance documents are provided with shipment where applicable. Get quote.
Product Overview & Technical Data
Product Overview
55 and 65 mm thermal-break casement door aluminium profiles built on the same platform as the 55 and 65 casement windows, with a 100 thermal-break floor-spring door series available for entrance openings.
Casement doors are where window systems usually come apart. The door has to carry a leaf several times the weight of a window sash, take a lock case and a hinge set, and still line up visually with the glazing around it. This series answers that by being the same platform as the 55 and 65 casement windows rather than a separate product – so a glazed screen with a door in it is detailed once, in one profile family, with one gasket schedule and one set of corner cleats.
Two depths are offered because door duty varies. The 55 mm sections suit internal and light external doors where the leaf is modest and the exposure is low. The 65 mm sections carry heavier leaves and give a larger glazing rebate for the thicker insulating or laminated units an external door usually needs.
For entrance openings – the doors that take hundreds of cycles a day and need to close on their own – the range includes a 100 thermal-break floor-spring door series. Specifying the entrance from the same range means the main door and the surrounding glazing carry the same finish batch and the same thermal break, instead of an obvious mismatch at the most visible point in the facade.
Tell Us the Duty
The useful starting point is what the profile has to do: span, wind load, U-value target, opening type. From that we identify the series and say plainly where a cheaper option would be a false economy.
Tooling Where Needed
Bespoke sections are normal here rather than exceptional. Die design, simulation, machining and vacuum nitriding are all in-house, and you approve a sample extrusion before production is booked.
Supply & Delivery Notes
Contract & Export Entity
Luyu International coordinates the contract, payment, export documents and project delivery.
Manufacturing Arrangement
Approved manufacturers organize production against confirmed drawings, specifications and orders.
Quality & Documents
Manufacturer certificates, test reports, batch inspection and third-party inspection can be arranged.
International Delivery
FOB, CIF and DDP support covers packing, loading, customs declaration and international logistics.
Certificates, test reports and delivery documents are subject to the current project, product model and documents available from the manufacturer.
Technical Data & Specification Review
Published parameters are reference configurations for this series. Final values are subject to approved drawings, manufacturer technical documents, samples and project inspection records.
| Series | 55 and 65 thermal-break casement door |
| Family | shares the 55 and 65 casement window platform, so a project can be detailed in one profile family |
| Related series | 100 thermal-break floor-spring door available for entrance openings |
| Alloys supplied | 6063-T5, 6005-T5 and 6061-T6; per-heat chemistry verified by direct-reading spectrometer |
| Finishes available | Anodised, powder-coated, PVDF fluorocarbon, electrophoretic lacquer, wood-grain transfer – all in-house |
| Tooling | Own die design and manufacture with simulation analysis and vacuum nitriding; customer drawings accepted |
| Made to order | Length schedule, wall thickness within the design envelope, finish colour to signed sample, packing unit |
| Capacity and shipping | 50,000 t/year partner manufacturing base, 100,000 t+ group-wide; direct export licence; supervised container loading |
Dimensional and performance figures are taken from the manufacturing partner’s own product catalogue. Mill certificates, spectrometer analysis reports and coating thickness records are issued with each shipment.
What we can change for your project – and what we cannot
Material and Grade
Metal specification follows the section: 6063-T5 for standard architectural extrusions, 6005-T5 where the design needs a higher mechanical rating in the same envelope, 6061-T6 for the most heavily loaded members. Chemistry on every heat is confirmed by direct-reading spectrometer in the on-site spectroscopy lab, and mechanical properties are verified in the physical-mechanical lab before release.
Surface Finish
All the usual architectural finishes are available and all of them are produced in-house – anodised, powder-coated, fluorocarbon (PVDF) coated, electrophoretically lacquered and wood-grain heat transferred. The vertical powder line, the PVDF line and the wood-grain vacuum transfer oven sit on the same 40,000 m² site as the extrusion presses, with chromium-free pre-treatment ahead of every coating process.
Custom Tooling
Tooling is made in-house, which is what makes bespoke sections practical rather than theoretical. Flow behaviour is checked by simulation before steel is cut, the die is then machined and hardened in a vacuum nitriding furnace, and a first sample length is produced for approval before the run starts. Customer drawings and physical samples are both accepted as the starting point.
Made-to-Order Sizing
Made to order means made to your figures – cut length, wall thickness inside the section’s design envelope, finish colour and bundle quantity. Supplying the cutting list with the order costs nothing and saves both the offcut waste and the saw time at the other end.
Factory and Export Capability
The approved partner manufacturer holds its own import-export licence for aluminium and aluminium products, so shipments are made direct from the factory rather than through an agent. Design capacity at the partner manufacturing base is 50,000 tonnes a year, over 100,000 tonnes across the group including multiple partner manufacturing bases. Export packing is moisture-barrier wrapping, protective film, foam interleaving and timber crating; FOB, CIF and DDP terms are all quoted and container loading is supervised in-house.
Alloy, Temper, Finish
Billet chemistry is checked by spectrometer on every heat, the temper is confirmed to the drawing, and the finish is applied in-house over approved partner manufacturer chromium-free pre-treatment.
Send the drawings, the opening schedule or the performance target. Our engineers will confirm the series, the alloy, the finish and the delivered price — and tell you plainly if another series in the range fits your project better.
The plant’s published figures for this series – frame width, sight lines, thermal strip and the performance it states.
Applications
Light internal glazed doors
The 55 mm sections keep weight and cost down where exposure is low.
Where this profile is specified
The configuration of Where this profile is specified is selected against the operating conditions, installation interfaces and destination-market requirements. Include the intended use and site constraints in the RFQ.
Balcony and terrace doors
Casement doors on the same platform as the adjacent windows, so the screen reads as one system.
Apartment entrance doors
The 65 mm sections carry heavier leaves with the glazing rebate an external door needs.
Glazed screens with opening leaves
Shared platform with the 55 and 65 window series removes the window-to-door interface.
Commercial entrances
The 100 thermal-break floor-spring series covers high-cycle main entrances.
Hotel and restaurant frontages
Consistent sight lines and one finish batch across doors and adjacent glazing.
Quality Control & Inspection
Inspection for 55 / 65 Thermal-Break Casement Door Series can cover the approved specification, appearance, dimensions and agreed performance checks. Factory or third-party inspection criteria must be confirmed before the order.
Packing & Delivery
Shipping and Terms
Container loading is supervised by our own staff, packing is film, moisture barrier, foam interleaving and timber crating, and terms are FOB, CIF or DDP as you prefer.
Other products in this range, and where they have been used
JP60 Thermal-Break Casement Window Aluminium Profile
JP60 60 mm thermal-break casement window profile in 6063-T5 with 14.8 mm PA66-GF25 strip, U-value from 2.4 W/(m2K).
JP108 Heavy-Duty Sliding Door Aluminium Profile
JP108 108 mm heavy duty sliding door aluminium profile in 6063-T5 for large glazed openings up to 300 kg per leaf.
JP140 Unitised Curtain Wall System
JP140 unitised curtain wall profile in 6063-T5, 140 mm mullion depth for high-rise facades.
The full range sits under Door & Window Profiles, and the buildings and sites these products have gone into are listed under Domestic Engineering Projects. If none of them is quite your specification, say what is different in the enquiry – most of what we ship is made to a drawing rather than picked off a shelf.
Related Products
Project Sourcing & Export Delivery
Requirement Review
Confirm application, drawings, specifications, quantity, destination and delivery target.
Technical Alignment
Check materials, dimensions, performance, finish and destination-market standards.
Quality Inspection
Arrange samples, production checkpoints, factory or third-party inspection as agreed.
Export Delivery
Align packing, labels, documents, container loading and international logistics.
Request a Quote
Specification review, supplier verification, quality control, export packing and delivery coordination for international projects and professional buyers.
