70E High-Efficiency Casement Window (20 mm break)
Products are supplied through qualified partner manufacturers in China. 20 mm thermal break, 6063 alloy, indicative MOQ 1 ton, subject to specification and manufacturer confirmation. 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
casement window profile 70 mm is engineered for high-performance architectural fenestration and energy-efficient building facades. Our premium 70E high-efficiency thermal-break casement window aluminum profile features a 20 mm thermal-break strip, representing the deepest option in the 20 mm E group, complete with a matching 70E casement door series.
The 70E sits at the top of the 20 mm-break group. The extra frame depth over the 60E and 65E buys two things at once: a larger glazing rebate, so heavier acoustic or triple insulating units can be carried, and a stiffer section, so sashes can be made larger before deflection becomes the governing limit. For a project with tall openings and a hard U-value target, this is usually the section that resolves both constraints without moving up to the 75 mm multi-cavity series.
Section stiffness is the part specifiers tend to underestimate. A window that meets its U-value on paper still fails a site air-permeability test if the sash bows under wind load and lifts the gasket off its seat. Choosing depth for structural reasons rather than thermal ones is often what makes the difference on tall glazing.
Product Specifications & Applications:
* Product Name: Casement Window Profile 70 mm (70E Series)
* Thermal Break Width: 20 mm polyamide strip
* Applications: High-end residential villas, commercial office buildings, and energy-saving windows
* Key Advantages: Enhanced section stiffness, larger glazing rebate for triple glazing, superior wind resistance
Contact our sales team today to request wholesale pricing and technical datasheets for our casement window profile 70 mm systems.
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.
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 | 70E thermal-break casement, high energy-saving group |
| Thermal break | 20 mm strip |
| Family | matching 70E casement door series available |
| Temper and grade | 6063-T5 for standard sections · 6005-T5 where load rating governs · 6061-T6 for the heaviest duty |
| Finish routes | Anodised · powder-coated · PVDF fluorocarbon · electrophoretic · wood-grain transfer, all produced on site |
| Bespoke sections | Die cut to your drawing or sample; existing dies modified where the geometry is close |
| Order-specific dimensions | Cut length, wall thickness inside the design envelope, colour to approved sample, bundle quantity |
| Manufacturing 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.
Triple-glazed specifications
Rebate depth suits the triple IG units used in northern climates.
Exposed high-rise elevations
Section stiffness matters more than nominal U-value once wind loads get high.
Window and door screens
The matching 70E door series completes glazed screens without a second supplier.
Public and institutional buildings
Handles large repetitive openings in schools, offices and civic buildings.
What we can change for your project – and what we cannot
Material and Grade
The alloys used are 6063-T5, 6005-T5 and 6061-T6. 6063-T5 covers the general architectural sections where surface quality matters most; 6005-T5 is specified when a section has to carry more load without growing in depth; 6061-T6 is reserved for the highest-stress parts. Ageing runs in nine-frame gas-fired double-door ovens with the temper confirmed by hardness check, and billet chemistry is verified by spectrometer on every heat.
Surface Finish
Finishing is not subcontracted. Anodising, powder coating, fluorocarbon (PVDF) coating, electrophoretic lacquer and wood-grain heat transfer are all in-house processes on the same site as the presses, using chromium-free pre-treatment and first-tier electrostatic powder. Keeping extrusion and coating under one roof is what keeps colour consistent across a batch that ships over several months.
Custom Tooling
Dies are designed and cut in-house, with simulation analysis before steel is committed and vacuum nitriding afterwards. That means a bespoke section can be opened to a customer’s drawing, and an existing die can be modified where a project needs a variant rather than a whole new section – usually the faster and cheaper of the two routes.
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
Export goes direct. The approved partner manufacturer holds its own import-export licence for aluminium products and supervises its own container loading, whether the order fills a container or consolidates with others. Capacity is 50,000 tonnes a year at the partner manufacturing base and more than 100,000 tonnes group-wide. Packing is protective film, moisture barrier, foam interleaving and timber crates; terms are FOB, CIF or DDP.
Production and Finishing
Extrusion in the confirmed alloy and temper, then anodising, powder coating, PVDF, electrophoresis or wood-grain transfer to the approved colour sample.
55 / 65 Thermal-Break Casement Door Series
55 and 65 thermal break casement door series in aluminium for entrance and balcony doors.
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).
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.
Applications
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.
Tall residential openings
The deeper section keeps sash deflection inside limits where 60E or 65E would be at the edge of their span.
Acoustic glazing
A larger glazing rebate accommodates the thick laminated units that high acoustic ratings require.
Quality Control & Inspection
Inspection for 70E High-Efficiency Casement Window (20 mm break) 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
Enquiry and Drawing
Send the section drawing, a sample, or the opening schedule and performance target. Our engineers confirm which series fits and say so plainly if a different one fits better.
Tooling and Sample
Where a bespoke section is needed the die is designed with simulation analysis, cut and nitrided in house, and a sample length is produced for approval.
Export Packing and Shipping
Protective film, moisture barrier, foam interleaving and timber crating, on FOB / CIF / DDP terms with container loading supervised in house.
Other products in this range, and where they have been used
G64 / 70G Thermal-Break Casement (24 mm break)
G64 and 70G thermal break casement profile 24 mm PA66-GF25 strip for low U-value glazing.
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.
