Your Reliable Partner For Custom Special Glass In China
SpecialGlass
Technical Support+86 19860070065Get a Quote
Hot-Formed Glass Components

Custom 3D Curved & Bent Glass

Formed cover glass and bent technical panels developed from 3D geometry, material behavior, tooling and optical requirements.

Send a Drawing for ReviewOpen Engineering Guide
Custom OEM manufacturing. Final specifications are confirmed against the drawing and approved sample.
Engineering Overview

Curved Glass Begins With an Unambiguous Geometry Definition

Terms such as 2.5D, 3D, curved and bent are used loosely. For manufacturing, the drawing must identify bend axes, radii, arc direction, chord, sag, tangent transitions, edge profile, surface orientation and the coordinate system used to inspect the final shape.

Material viscosity, thickness, panel size and forming method affect feasible radius, profile repeatability, surface marks and optical distortion. We therefore review the complete geometry and quality map before confirming tooling or tolerances.

There is no universal minimum radius.Radius feasibility depends on composition, thickness, size, bend angle, process, tooling and acceptance criteria.

Technical Overview

Form familiesCylindrical bends, edge bends, multi-radius profiles and selected compound forms
Input data2D controlled drawing plus 3D CAD surface for formed geometry
Key dimensionsInside/outside radius, chord, arc length, sag, angle, tangent length and edge coordinates
SubstratesSoda-lime and selected strengthenable or technical glass after forming review
Post-processCNC/edge work, strengthening, printing and coatings arranged in a compatible sequence
ApprovalTooling sample, coordinate report and physical cosmetic/optical sample

Values and acceptance methods are fixed during drawing, material and sample review.

Interactive Geometry Guide

Compare the Main Curved-Glass Form Families

Rotate between reference forms to see which geometry terms must appear in the RFQ.

Coating faceTangent zoneCritical edge
Reference form

Cylindrical Bend

One principal bend axis. Specify inside or outside radius, arc direction, chord, sag and tangent lengths.

Geometry visualization only. It is not a dimensional or optical simulation.

01

Why Radius, Chord and Sag Must Agree

A radius alone does not fully define a finite curved panel. The same nominal radius can describe different parts when the chord, arc length, included angle or tangent sections differ. Conflicting dimensions force interpretation at tooling stage and make inspection ambiguous. The controlled drawing should identify the governing dimensions, reference surface and coordinate system, with a 3D model for compound forms.

Product Types

Common 3D Curved & Bent Glass Configurations

Each type represents a different engineering and purchasing route. Final dimensions, materials and validation requirements remain drawing-specific.

Cylindrical Curved Glass
Single Axis

Cylindrical Curved Glass

Constant-radius geometry with chord, sag and tangent dimensions controlled from one bend axis.

2.5D & Edge-Bent Cover Glass
Edge Form

2.5D & Edge-Bent Cover Glass

Localized curved transitions for controls, displays and decorative interfaces.

Compound 3D Cover Glass
Multiple Surfaces

Compound 3D Cover Glass

Multi-axis forms requiring 3D inspection, tooling review and optical mapping.

Curved Display Cover Glass
Vehicle Interior

Curved Display Cover Glass

Formed glass coordinated with display viewing geometry, coatings and bonding.

Bent Interface Panels
Appliance & Controls

Bent Interface Panels

Curved printed panels for control surfaces and industrial product enclosures.

Manufacturing & Inspection

Inspect Formed Glass as a Surface, Not Only at the Edges

A formed part can meet edge dimensions while still showing local profile error, warp or optical distortion. Inspection must match the functional surface.

Manufacturing Route

  1. 01
    Requirements Review

    Lock the drawing revision, substrate, visual zones, test plan and sample quantities.

  2. 02
    Cutting & CNC

    Machine the outline, holes, slots and edge profiles with the correct process allowance.

  3. 03
    Cleaning & Surface Preparation

    Remove particles and residues before printing, strengthening, coating or bonding.

  4. 04
    Functional Processing

    Apply the approved printing, strengthening, surface treatment or forming sequence.

  5. 05
    Final Inspection & Packing

    Inspect controlled characteristics and protect cosmetic surfaces for shipment.

Control Plan

GeometryOverall size, thickness, holes, slots, radius and datum position
CosmeticInspection zones, scratches, chips, inclusions and print defects
OpticalTransmission, haze, gloss, reflection or window appearance as specified
InterfacePrint registration, flatness/shape and bonding or gasket area
FunctionalStrengthening, coating, adhesion or environmental tests by plan
TraceabilityDrawing revision, material lot, process route and inspection record

Inspection frequency, method and acceptance limits follow the approved control plan.

Project Navigation

Continue by Material, Manufacturing or Finished Product

Open the route that still controls this specification.

Material route

Select the Substrate Behind the Interface

Primary variables
Strengthening | optical color | dielectric thickness

Use the material route when thickness, edge color, strengthening or touch distance remains open. Compare the substrate with the production display and sensor stack.

MaterialProcessingFinished part
Aluminosilicate Glass

Thin cover glass developed around chemical strengthening and touch response.

Material page
Low Iron Glass

Reduced edge tint for clearer display and color-sensitive interfaces.

Material page
Soda Lime Glass

A cost-controlled substrate for printed and strengthened flat glass.

Material page
Procurement FAQ

Questions to Resolve Before Quotation

Curved glass pricing and feasibility are driven by geometry, quality map and production volume.

What is the minimum bend radius?

There is no single value. It depends on glass composition, thickness, panel size, bend angle, forming process, tooling and optical/profile tolerances.

Is 2.5D glass the same as 3D formed glass?

Not necessarily. 2.5D often describes polished or locally curved edges, while 3D formed glass changes the main surface geometry. Define the actual profile instead of relying on the label.

Can holes be added to curved glass?

Possible routes depend on whether features are machined before or after forming and strengthening. Their location, size and edge distance require specific review.

Can curved glass receive AR or AF coating?

Selected coating systems can be applied, but coating uniformity, color shift and durability across the curvature must be validated.

How is profile deviation measured?

Options include fixtures, templates, coordinate measurement and surface scanning. The method, datum alignment and sampling map should be agreed before tooling approval.

Why is a tooling sample necessary?

It verifies springback/profile, mold marks, optical distortion, edge coordinates and downstream printing/coating compatibility before production release.

RFQ and Manufacturing Review

Send 3D Data and the Profile Acceptance Method

Include: STEP/IGES or equivalent 3D surface | Controlled 2D drawing and datum system | Material and thickness | Inside/outside radius convention | Profile-deviation and optical criteria | Printing/coating surface orientation | Prototype and production quantity.

Curved-glass feasibility and tooling cannot be confirmed from a photograph or outside dimensions alone. Our review identifies the proposed substrate, process sequence, open technical points and the characteristics that need sample approval.

Saving your time and cost is our common pursuit.

Tell us the material, size, thickness, tolerance, quantity, application, and any holes, slots, edges, coating, printing, or polishing requirements. We can manufacture custom glass components from your drawing, CAD file, sketch, or sample.

Address
Yunpu Industrial Zone, Nangang, Huangpu District, Guangzhou
Wechat
+86 19860070065