When your product is heavy, fragile or travelling a long way, an ordinary carton isn’t enough. A box that crushes, bursts or collapses under stacking means damaged goods, returns and unhappy customers. Heavy-duty corrugated boxes are built to prevent that.
At Annjai Packaging, we manufacture and supply corrugated boxes for businesses across Faridabad, Ballabgarh and Delhi NCR. Here’s what to look for when you buy.
What makes a corrugated box “heavy-duty”?
A corrugated box is made of flat paper liners with wavy fluted paper between them. The more layers, the stronger the board.
- 3-ply (single wall): two liners and one flute layer. Good for light products.
- 5-ply (double wall): three liners and two flute layers. Suited to medium to heavy loads.
- 7-ply (triple wall): four liners and three flute layers. Built for very heavy goods, export and stacking.
The paper quality (GSM), flute type and box style also affect how much weight a box can take.
5-ply or 7-ply: which should you pick?
| 5-ply | 7-ply | |
|---|---|---|
| Strength | High | Very high |
| Best for | Appliances, electronics, retail goods, bulk e-commerce orders | Machinery parts, auto parts, glass, ceramics, export cartons |
| Stacking | Good | Excellent |
| Cost | Moderate | Higher |
| Example | Heavy Duty Carton 18x14x12 (5-ply) | Master Moving Box 24x18x18 (7-ply) |
If you’re unsure, start with 5-ply and move to 7-ply if your product is very heavy, fragile or stored in tall stacks.
Popular heavy-duty box styles
- RSC (regular slotted container): the standard shipping box, flaps meet at the centre.
- FOL (full overlap): outer flaps cover the whole top and bottom for extra strength.
- Telescopic two-piece box: separate lid and base, with adjustable height for bulky items.
- Wardrobe (hanger) box: tall box with a hanger bar for garments.
- Long narrow poster box: for posters, drawings and long items.
- Master moving box: large reinforced carton for house shifting and bulk goods.
Where heavy-duty boxes are used
- E-commerce and courier shipping
- Industrial and spare parts
- Export and long-distance transport
- Warehouse storage and stacking
- Moving and relocation
Tips for choosing the right box
- Weigh your product and add the packing material weight.
- Measure inside dimensions and leave about 1 inch of room for padding.
- Think about how the box is shipped. Long distance and multiple handling need stronger board.
- Seal it properly with packing tape or strapping on heavy cartons.
- Add protection such as corner protectors, bubble wrap or void fill for fragile items.
Why order from Annjai Packaging?
- Factory-direct pricing with no middlemen (why choose us)
- Custom sizes and printing to suit your product and brand
- 3-ply, 5-ply and 7-ply options in many sizes
- Fast local delivery across Faridabad, Ballabgarh and Delhi NCR
- Bulk discounts for regular and large orders
See how we work on our process page.
Frequently asked questions
How many kg can a 5-ply box hold?
It depends on the size, paper quality and how the box is loaded, but 5-ply cartons are commonly used for loads of roughly 10 to 25 kg. For an exact figure, contact us for a sample or specification.
Can I get boxes in a custom size?
Yes. Send us your product dimensions and quantity and we’ll make boxes to fit.
Can you print my logo on the box?
Yes. We offer custom printing, including one-colour logos and shipping marks.
What’s the minimum order quantity?
It depends on the box size and style. More answers are on our FAQ page.
Get a quote for your heavy-duty boxes
Tell us your box size, ply and quantity, and we’ll send you a competitive quote. Request a quote or browse all corrugated boxes.
📞 +91 98912 65255
✉️ info@annjai.in
📍 Plot No. 95-97, Laghu Udyog Kunj, Sector 64, Mohna Road, Ballabgarh, Faridabad, Haryana 121004
Annjai Packaging: Packed with Care, Delivered with Trust.
