Home > Steel Profiles > 70SD Profile- 25 Series

70SD–25 Series

Refined Strength, Elevated Design

The 70SD-25 offers fire-insulated and thermally broken energy-saving solutions across narrow-frame doors, large and narrow-frame windows, hopper windows, and fire windows. Sleek lines, secure construction, and excellent water-tightness come together to offer safety, efficiency, and style in one refined system.

View through sliding glass doors into a modern living space with a black sofa, wooden accent wall, and a small outdoor seating area with a table and chairs under an umbrella.
Living room with large sliding glass door overlooking trees and a park
Trade show booth labeled zeroGravity with glass walls and people walking around and interacting inside and outside the booth.
View of a trade show or conference exhibition inside a large hall, seen through glass doors with gold-colored frames. Several attendees are present, some talking and others walking, with booths and displays in the background.
Close-up of a glass door with a gold-colored handle leading into a busy indoor space with people and tables visible outside.
A trade show booth with the name 'MEDA' illuminated in blue neon lights on a black background. Inside the booth, people are engaged in conversations and viewing displays.
Glass door entrance at a convention center or exhibition hall with a view of an empty corridor and various booths in the background.
Close-up of a sliding glass door track on a brass threshold, with a blue carpet on the inside and a concrete floor outside.
A clear glass-walled booth at a trade show with people sitting inside and nearby, with displays and signage in the background.
Close-up of a glass sliding door track with a blue carpeted floor.
A glass-enclosed display booth at a trade show or convention, with people inside and outside. The booth has black framing and indoor lighting, with people engaged in conversation and a woman standing on a platform or step at the right side.
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Cutaway diagram of a modern window showing frame, glass pane, and internal components.

Strong, Insulated, Multifunctional Steel Frames

  • Sleek 70 mm cold-rolled steel frames for a clean, modern look without sacrificing strength

  • High-strength steel construction delivers long-term durability and peace of mind

  • Glass-fiber polyurethane insulation helps keep indoor temperatures comfortable while improving energy efficiency

  • Three-cavity design reduces heat transfer, supporting better insulation and year-round comfort

A tall, black framed glass door with a handle on the left side, set against a plain white background.

70SD–25 Series

  • 25 mm cavity width for improved insulation and structural performance

  • Fire- and water-resistant design for added safety and protection

  • Thermally broken, energy-saving profiles that help maintain comfortable indoor temperatures

  • Ideal for slim-frame doors, large windows, hopper windows, and sliding door applications

Explore the Collection

A line art illustration of an inward-opening window.

Inward-Opening Window

A line art illustration of an opened single panel swing door.

Outward-Opening Window

A line art illustration of an opened top-hinged window.

Top-Hinged Window

A line art illustration of a sliding door with two wide panels.

Manual Lift and Slide Door

Line drawing of an electrical or data cabinet with a lightning bolt symbol on the door.

Automatic Multi-Slide Door

A line art illustration of a sliding door with two wide panels.

Electric Lift and Slide Door

A line art illustration of a sliding door with two wide panels.

Panoramic Sliding Door

Outline illustration of a sliding glass door with one pane open, showing black interior and grey outer panels, with arrows indicating the sliding direction.

Magnetic Levitation
Sliding Door

A line art illustration of an opened four-panel sliding door.

Multi-Track Sliding Door

A line art illustration of an opened double-swing door.

Inward/Outward Opening Door

    • Galvanized Cold-Formed Steel

    • Fiberglass-Reinforced Polyurethane Insulation

    • Fluorocarbon Coating

    • Stainless Steel

    • Copper Plating Wire Drawing

  • Inward Window – Inward-Opening Fire-Rated Window

    • Max W 750 × H 1600 mm (29 × 62 in)

    • Min: W 500 × H 500 mm (19 × 19 in)

    Outward Window – Outward-Opening Fire-Rated Window

    • Max: W 750 × H 1600 mm (29 × 62 in)

    • Min: W 500 × H 500 mm (19 × 19 in)

    Top-Hinged Fire-Rated Window

    • Max: W 1500 × H 1200 mm (59 × 47 in) (or within 1.8 m²)

    • Min: W 500 × H 500 mm (19 × 19 in)

    Manual Lift-and-Slide Door

    • Max: W 1500 × H 3500 mm (59 × 137 in) (single-panel max weight ≤350 kg)

    • Min: W 500 × H 1800 mm (19 × 70 in)

    Electric Lift-and-Slide Door

    • Max: W 2000 × H 3500 mm (78 × 137 in) (single-panel max weight ≤400 kg)

    • Min: W 500 × H 1800 mm (19 × 70 in)

    Panoramic Sliding Door

    • Max: W 2500 × H 4000 mm (98 × 157 in) (single-panel max weight ≤500 kg)

    • Min: W 500 × H 1800 mm (19 × 70 in)

    Magnetic Levitation Sliding Door

    • Max: W 2500 × H 4000 mm (98 × 157 in) (single-panel max weight ≤500 kg)

    • Min: W 500 × H 1800 mm (19 × 70 in)

    Multi-Track Sliding Door

    • Max: W 2500 × H 4000 mm (98 × 157 in) (combined max weight ≤500 kg)

    • Min: W 500 × H 1800 mm (19 × 70 in)

  • A variety of windows, doors, and partitions can be seamlessly combined to achieve your desired layout. Get in touch for more information.

    • Steel hinges for welding or concealed hinge

    • Steel glazing beads(indoor)

    • Multipoint locks (motorized also available)

    • Emergency locks and panic push-bars

    • The three-cavity structure design can achieve a better heat insulation effect

    • It can be matched with various types of standard hardware.

    • Steel hinges for welding or concealed hinge

    • Connection to a solid wall or lightweight partition wall.

    • Enhanced water tightness through advanced injection-sealing technology.

    • Lightweight engineering, reducing profile weight by 20% compared to similar products.