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China Spiral Binding Coil Manufacturer

Various types of text booklet calendars, spiral binding coils   

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23.6mm Thick Metal Coil Binding 42.8mm For Hardcover Books Calendars

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China HongKong Sudi Stationery Limited certification
China HongKong Sudi Stationery Limited certification
Very quick lead time for our urgent need, thank you for your help!

—— Gary Kisel

Reasonable price with high quality, appreciated your kind cooperation.

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Pleasant cooperation and hope we can have more bussiness in the future!

—— Prateek Keshari

23.6mm Thick Metal Coil Binding 42.8mm For Hardcover Books Calendars

23.6mm Thick Metal Coil Binding 42.8mm For Hardcover Books Calendars
23.6mm Thick Metal Coil Binding 42.8mm For Hardcover Books Calendars

Large Image :  23.6mm Thick Metal Coil Binding 42.8mm For Hardcover Books Calendars Get Best Price

Product Details:
Place of Origin: China
Brand Name: Sudi
Certification: ROHS , SGS , CPST
Model Number: 6.4mmto 50.8mm
Payment & Shipping Terms:
Minimum Order Quantity: 1500pcs
Price: Negotiable
Packaging Details: Export carton
Delivery Time: 1-15 days
Payment Terms: T/T, L/C, D/P, Western Union, MoneyGram
Supply Ability: 500,000 pieces per month
Detailed Product Description
Product Name: Colored Metal Spiral Binding Coils Binding Thickness: 23.6mm
Finish: Encapsulation Color: Black, White, Red,yellow,green,blue,purple,gold,bronze, Silver
Dimension: 3.4mmto42.8mm Use: Calendar, Notebook, Various Books
Length: Custom Made Hole Distance: 4/1 3/1 2/1 5/1
Wire Diameter: Standard (customizable) Binding Way: By Single Loop Forming Spiral&binding Machine
Inventory: 1000pcs Number Of Turns: Can Be Cut Into Any Number Of Teeth
Material: Nylon Covered Wire
High Light:

23.6mm Metal Coil Binding


42.8mm Metal Coil Binding


Calendars Metal Spiral Binding Coils

12 Size Colorful Metal Spiral Binding Coils for Hardcover Books, Notebooks, Calendars​

   Company Profile.pdf



Spiral Coil Binding Supplies
These spiral coils are used in conjunction with your binding system to create high-quality, durable documents. These spines allow your material to lay flat or fold back to back, perfect for taking notes and turning pages quickly. With more than 60 colors and sizes to choose from, as well as the choice of wire diameters, we can also produce super large 60-100mm sizes, which are environmentally friendly, durable and beautiful.

Advantages of Spiral Binding

  1. Single Loop Metal Binding coil Spine has smooth and gorgeous surface,
  2. most of printed company use it for hardcove book, notebook, calendar etc.
  3. The metal spiral coil is rich in color, and the wire diameter can be customized according to your needs, making your book very unique.
  4. We have ISO 9001 certificate...
  5. We can make 100MM inner diameter to make the choice wider.


How do I choose a spiral coil?
We are a factory, you can contact me at any time to customize the binding coil that suits you, we provide a variety of binding coil sizes, if you are not sure about your size, not sure about the spacing? Here are the steps on how to choose the binding coil you need to buy.


Inside Diameter Wire Diameter (mm) Max Thickness (mm) Pitch
1/4'' (6.4mm) 1.27 3.4 6
5/16'' (7.9mm) 1.27 4.9 6
3/8'' (9.5mm) 1.57 6.5 6
7/16'' (11.1mm) 1.57 8.1 6
1/2'' (12.7mm) 1.78 9.7 6
9/16'' (14.3mm) 1.78 11.3 6 or 8
5/8'' (15.9mm) 1.78 12.9 6 or 8
3/4'' (19.1mm) 1.91 15.1 6 or 8
7/8'' (22.2mm) 2.29 18.2 6 or 8
1'' (25.4mm) 2.29 20.4 6 or 8
1-1/8'' (28.6mm) 2.29 23.6 6 or 8
1-1/4'' (31.8mm) 2.29 25.8 6 or 8
1-3/8'' (34.9mm) 2.79 29.2 6 or 8
1-1/2'' (38.1mm) 2.79 32.1 6 or 8
1-3/4'' (44.5mm) 2.79 38 6 or 8
2'' (50.8mm) 2.79 42.8 6 or 8



1) Choose a Coil Size (Diameter) ?

Now choose your coil size (diameter) for your document. You can use the coil bind capacity chart below to help choose the best size based on your stack thickness or your sheet capacity. Just note that the sheet capacity was calculated using sheets (not pages) that were all 20 lb. bond copy paper, without any covers; this means it can vary significantly depending on the stock you are using, which is why we recommend the stack thickness method instead. And remember: having a coil that is slightly too large is better than having a coil that is too small; a small coil won't allow pages to flip smoothly and can pinch them, tear more easily. So if you are between sizes, we recommend you size-up.

23.6mm Thick Metal Coil Binding 42.8mm For Hardcover Books Calendars 0


       If you want an alternative solution to choose the best size, you can utilize this general rule of thumb:

  1. Take the pages and covers being bound and lay the stack flat on a table.
  2. Measure the thickness of the stack, but don’t press down; let it lay naturally loose.
  3. Add 1/8" to the stack thickness - that will be the size of the binding coil recommended for your document thickness.

23.6mm Thick Metal Coil Binding 42.8mm For Hardcover Books Calendars 1


2) Select the coil spacing ?

Spacing refers to the number of holes per inch or the spacing of holes. It's reflected in a ratio that includes the number of holes, a punctuation colon, and then an inch measurement. For example: 4:1. This ratio is read aloud/pronounced "four to one" and means 4 holes per 1 inch of length.

For example, in the United States, the standard pitch for helical coils is 4:1.

The 4:1 pitch bundled coil spine is by far the most popular, with approximately 98% of customers ordering the 4:1 pitch screw binder. 5:1 is a special pitch made primarily for print shops that have specialized equipment for punching patterns and users who may have machines made in other countries where 5:1 pitch is more common. Some more specialized machines will have other coil hole patterns such as 3:1, 2.5:1 or even 2.231mm. Before buying a screw binder, you'll want to check the compatibility of your screw binder, but keep in mind that most machines are 4:1.

23.6mm Thick Metal Coil Binding 42.8mm For Hardcover Books Calendars 2


3) Choose a Coil Color ?

Stock colors for most sizes and spacings include black, white, clear, royal blue, navy blue, red and silver. The colors are solid and uncoated, so they stay even with heavy use and scratching. Black coils are the most popular choice, with white and clear a close second. Maroons and navy blues are popular choices for professional agencies because they often match corporate branding. Red and royal blue are brighter and more vibrant than other colors and are therefore more common in schools and other organizations that require brighter coil bindings.


We also have a large selection of special order colors that can be used to make your spines. Below are some of the most popular more unique colors.

23.6mm Thick Metal Coil Binding 42.8mm For Hardcover Books Calendars 3

Our company advantages:


1. We are the largest wire manufacturer in Dongguan area.


2. We have our own 10 sets of nylon coating machines, which can save the cost of raw materials because we produce nylon coating lines by ourselves.


3. We have ISO 9001 certificate, all products have passed SGS test. Our customers from all over the world are impressed with our products.


Our Contact Information:


WhatsApp: 86-13925814801

WeChat: 13925814801

Contact Details
HongKong Sudi Stationery Limited

Contact Person: Mr zhang

Tel: +86-17722306989

Send your inquiry directly to us