gtag('config', 'AW-654510316'); Piano hinges, also known as continuous hinges, are one of the most versatile and durable types of hinges used across industries — from doors and cabinets to vehicles and marine equipment. Choosing the right piano hinge size is essential for ensuring stability, smooth movement, and long-lasting performance.
In this comprehensive guide, we’ll explain everything you need to know about piano hinge sizes, including standard dimensions, how to choose the right hinge for your application, and customization options. Whether you are a wholesaler, importer, or manufacturer, this guide will help you source the right piano hinges for your projects.
1.What Is a Piano Hinge?
A piano hinge is a long, continuous hinge that runs the entire length of a door or panel. It’s called a piano hinge because it was originally used on piano lids — offering smooth, stable operation and even weight distribution along the entire joint.
Unlike traditional short hinges (like butt hinges), a piano hinge has two long leaves connected by a central pin, providing uniform support and alignment over the full opening length.
Main Features of a Piano Hinge
• Full-length support: prevents door sagging and provides even load distribution
• Durable construction: available in various metals for strength and corrosion resistance
• Smooth operation: continuous pin ensures consistent pivoting without jerking
• Easy installation: can be cut to desired length and mounted with screws or rivets
Common Materials
At our factory, we produce piano hinges using:
• Cold Rolled Steel – economical and strong, suitable for indoor applications
• Stainless Steel 201 – good corrosion resistance at a competitive price
• Stainless Steel 304 – premium material for high humidity, outdoor, and marine use
2.Standard Piano Hinge Sizes
Piano hinges come in a variety of sizes to meet different application requirements. The key measurements are length, open width, and thickness. Let’s look at the standard sizes we manufacture and supply.
Standard Lengths
E-star Hardard provide standard piano hinge lengths as:
• 1.8 meters (1800mm)
• 2.0 meters (2000mm)
These are the most common lengths used for doors, cabinets, and industrial panels. However, we can also customize the hinge length based on your requirements — whether it’s 1.2m, 1.5m, 2.4m, or any other special size.
Standard Widths
We produce piano hinges with the following open widths:
25mm, 30mm, 38mm, 50mm, 60mm, 75mm, and 100mm
The width affects both the aesthetic appearance and the strength of the hinge.
• Narrow hinges (25–38mm) are ideal for small boxes or cabinets. • Medium widths (50–60mm) are common for furniture or interior doors. • Wider hinges (75–100mm) provide greater support for heavy-duty or industrial doors.
Standard Thicknesses
We offer a wide range of thicknesses to match various load requirements:
0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm, and 3.0mm
Thicker hinges are designed for heavier panels or demanding environments such as marine or industrial use, while thinner options suit light furniture or decorative applications.
Standard Piano Hinge Sizes Table
| Length | Open Width | Thickness | Pin Diameter | Material Options | Surface Finish |
| 1.8m | 25mm | 0.5mm | 2.3mm | Steel / SS201 / SS304 | Polished |
| 1.8m | 30mm | 0.8mm | 2.3mm | Steel / SS201 / SS304 | Brushed / Polished |
| 2.0m | 38mm | 1.0mm | 2.3mm | Steel / SS201 / SS304 | Polished |
| 2.0m | 50mm | 1.2mm | 3.2mm | SS201 / SS304 | Brushed |
| 2.0m | 60mm | 1.5mm | 3.0mm | SS304 | Polished |
| 2.0m | 75mm | 2.0mm | 6.0mm | SS304 | Polished |
| 2.0m | 100mm | 3.0mm | 8.0mm | SS304 | Brushed |
All piano hinges can be customized according to your required dimensions, hole pattern, or finish.
Customization Options
Besides standard sizes, we specialize in custom manufacturing for OEM and ODM clients.
Our customization capabilities include:
• Length: Cut or produce hinges in any custom length up to 3 meters
• Width: From narrow decorative styles (20mm) to extra-wide industrial hinges (120mm)
• Thickness: Available from 0.5mm to 3.0mm or tailored to your strength requirements
• Material: Choose from steel, stainless steel 201, or stainless steel 304
• Hole pattern: Pre-punched or unpunched hinges with customized hole spacing
• Finish: Polished, brushed, zinc-plated, or powder-coated options
• Packaging: Bulk or individually packed according to export needs
How to Choose the Right Piano Hinge Size?
Choosing the correct size of piano hinge is critical for achieving the best performance and durability. Here’s how to select the right hinge step by step.
Step 1: Consider the Door or Panel Weight
The heavier the door, the thicker and wider the hinge should be.
• Light doors: 0.5–0.8mm thick hinge
• Medium doors: 1.0–1.5mm thick hinge
• Heavy-duty doors: 2.0–3.0mm thick hinge
Step 2: Check the Door Height
The hinge should ideally run the full height of the door or panel.
For instance, a 2.0m tall door should use a 2.0m piano hinge for best support.
Step 3: Match the Door Thickness
For example, for a 40mm thick door, a 38mm to 50mm width hinge is recommended with 1.0–1.5mm thickness.
Step 4: Choose the Material
• Steel: cost-effective for indoor and dry environments
• SS201: suitable for general indoor/outdoor use
• SS304: best for marine, industrial, or humid areas
Step 5: Select the Finish
The finish not only affects appearance but also corrosion resistance.
• Zinc-plated steel: economical protection
• Brushed/polished stainless steel: premium appearance with rust resistance
Selection Quick Guide
| Application | Recommended Width | Thickness | Suggested Material |
| Wooden cabinet | 25–30mm | 0.8–1.0mm | SS201 |
| Interior door | 38–50mm | 1.0–1.5mm | SS201 / SS304 |
| Metal cabinet | 50–75mm | 1.2–2.0mm | SS304 |
| Industrial door | 75–100mm | 2.0–3.0mm | SS304 |
| 40mm thick door | 38–50mm | 1.0–1.5mm | SS304 |
Applications by Size and Industry
Piano hinges are incredibly versatile and can be found in furniture, industrial equipment, marine vessels, and even vehicles. Below is an overview of where and how they are commonly used:
| Width Range | Typical Applications | Recommended Thickness | Suggested Material |
| 25–30mm | Cabinets, toolboxes, furniture lids, electrical boxes | 0.5–0.8mm | Steel / SS201 |
| 38–50mm | Interior doors, furniture panels, access panels | 1.0–1.5mm | SS201 / SS304 |
| 60–75mm | Industrial cabinets, machinery doors, heavy access panels | 1.5–2.0mm | SS304 |
| 100mm+ | Warehouse doors, equipment enclosures, large gates | 2.0–3.0mm | SS304 |
Marine Applications
The marine industry relies heavily on piano hinges because of their corrosion resistance and smooth operation.
Common applications include:
• Boat hatches and deck lids
• Yacht cabinet doors and lockers
• Engine covers and inspection panels
• Dock boxes and marine enclosures
In salty and humid environments, stainless steel 304 (or 316) provides superior durability.
For marine use, the ideal hinge specifications are:
• Width: 38–75mm
• Thickness: 1.2–2.0mm
• Material: SS304 or SS316
Marine-grade stainless steel piano hinges ensure long-lasting operation even in continuous saltwater exposure.
Automotive Applications
Piano hinges are also extensively used in the automotive and transportation industry for their durability and vibration resistance.
They ensure reliable performance in high-use and outdoor environments.
Common uses include:
• Truck and trailer tailgates
• Tool compartments and storage boxes
• Bus and RV engine covers
• Utility vehicle access panels
• Camper van folding tables or cabinets
For automotive use, we recommend:
• Width: 38–60mm
• Thickness: 1.0–2.0mm
• Material: Steel or SS201 for indoor use, SS304 for exterior components
Industrial and Construction Applications
Piano hinges are often used on:
• Machine enclosures
• Electrical panels
• Access doors and control cabinets
• Metal doors in factories or warehouses
Their strength and alignment make them a preferred choice for heavy and frequently used installations.
Furniture and Architectural Applications
In homes and offices, piano hinges are used on:
• Wardrobe doors and foldable tables
• Cabinets and bookcases
• Storage boxes and lids
• Kitchen or closet doors
They provide a sleek, clean appearance while ensuring smooth, silent movement.
How to Measure a Piano Hinge
If you are replacing or ordering piano hinges, correct measurement is crucial. Here’s how to measure it accurately:
1. Length: Measure the total hinge length end to end.
2. Open Width: Measure the hinge when fully open, across both leaves.
3. Leaf Width: Measure one leaf from the pin center to the outer edge.
4. Thickness: Measure the thickness of one leaf.
5. Pin Diameter: The size of the central pin that connects both leaves.
When replacing an existing hinge, match all these dimensions for a perfect fit.
Installation Tips
• Always align the hinge with the door edge before drilling. • Use screws or rivets suitable for the hinge material. • Pre-drill holes to avoid damaging the leaf. • If cutting to size, use a fine metal saw and file the edges smoothly. • For outdoor or marine use, apply anti-corrosion lubricant on the pin occasionally.
Frequently Asked Questions (FAQ)
1.What are the standard sizes of piano hinges?
We produce standard piano hinges in 1.8m and 2.0m lengths, widths of 25mm to 100mm, and thickness from 0.5mm to 3.0mm. Custom sizes are also available.
2.Can a piano hinge be cut to size?
Yes. Piano hinges can easily be cut to your required size using a metal saw, or we can manufacture them to exact custom lengths.
3.What material is best for outdoor or marine use?
Stainless Steel 304 is ideal for humid, outdoor, and marine environments because it resists corrosion and rust.
4.What size hinge should I use for a 40mm thick door?
We recommend 38–50mm width and 1.0–1.5mm thickness, preferably in SS304 for strength and corrosion resistance.
5.Are stainless steel piano hinges rust-proof?
Yes. Stainless steel (especially 304 or 316) provides excellent rust resistance and is suitable for both indoor and outdoor use.
6.Can piano hinges be customized?
Absolutely. We can customize length, width, thickness, hole pattern, and finish based on your drawing or sample.
Conclusion
Piano hinges, with their simple yet durable design, offer long-lasting and smooth operation for doors, lids, and panels across multiple industries. Choosing the right piano hinge size ensures both aesthetic and functional performance — whether you’re installing them on cabinets, industrial enclosures, vehicles, or marine equipment.
We manufacture high-quality piano hinges in steel, stainless steel 201, and stainless steel 304, offering both standard (1.8m and 2.0m) and customized sizes with widths from 25mm to 100mm and thicknesses up to 3.0mm.
Our piano hinges are widely used in construction, furniture, industrial, automotive, and marine applications worldwide.
Looking for reliable piano hinge suppliers or manufacturers?
We offer stable quality, fast delivery, and full customization for global importers and wholesalers.
📩 Contact us today to request a quotation or free samples for your next project!
