China Aluminum Padlock Manufacturer, OEM/ODM Factory

Aluminum Padlock is the practical choice for buyers who want lightweight security, strong corrosion resistance and a modern colored finish in one product. The Aluminum Padlock series from Zhejiang Rongtao Hardware Products Co., Ltd., a China Aluminum Padlock Manufacturer based in Yiwu City, Zhejiang Province, covers five models: Arc-Shaped, Diamond, Arc-shaped with ABS Cover, Diamond with ABS Cover and Colorful Arc. Every model uses an aluminum alloy lock body and a hardened steel shackle, and the series is aimed at luggage, storage cabinets, toolboxes, warehouses and similar lightweight security jobs. As a Custom Aluminum Padlock Manufacturer and OEM/ODM Aluminum Padlock Factory, Rongtao also supports brand LOGO laser marking, color customization and packaging customization for overseas buyers and brand owners.

Aluminum Padlock Basics: What This Series Is Built For

An aluminum padlock works best where light weight, rust resistance and appearance matter as much as basic anti-theft performance. According to the product information published by Zhejiang Rongtao Hardware Products Co., Ltd., the series is made of high-strength aluminum alloy, and the surface is treated with anodizing technology that provides rich colors with long-lasting fade resistance. The lock cylinder is made of brass or stainless steel to keep operation smooth and extend service life. The range is described as suitable for lightweight security applications such as luggage, stationery, suitcases and storage cabinets. Rongtao was established in 2021 in Yiwu City and owns the Yiwu Shengping Lock Factory, so the series is backed by nearly 30 years of professional padlock manufacturing experience.

5 Models in the Aluminum Padlock series

6 Size options from 20 to 60 mm on the Arc-Shaped and Diamond models

6 mm Shackle diameter listed on the Colorful Arc model

Aluminum Padlock Models at a Glance

The table below summarizes the five models listed on the Rongtao Aluminum Padlock page, so buyers can compare size range, finish and construction before sending an inquiry.

Model	Body Design	Size Options	Finish	Highlights
Arc-Shaped Aluminum Padlock	Arc-shaped	20, 25, 30, 40, 50, 60 mm	Polishing / Brushing	Brass cylinder, brass pin tumblers and brass latch; HARDENED shackle marking
Diamond Aluminum Padlock	Diamond-shaped, integrally die-cast	20, 25, 30, 40, 50, 60 mm	Polishing / Brushing	Copper cylinder, pins and tongue; no splicing gaps in the body
Arc-shaped Aluminum Padlock with ABS Cover	Arc-shaped with ABS cover	20, 30, 40, 50, 60 mm	Polishing / Brushing, ABS cover in orange, black and other colors	Anti-slip cover, brass pin tumbler cylinder, same-color plastic handle key
Diamond Aluminum Padlock with ABS Cover	Diamond-shaped with ABS cover	20, 30, 40, 50, 60 mm	Polishing / Brushing, ABS cover in orange, black and other colors	Anti-slip cover, brass pin tumbler cylinder, plastic handle key for a comfortable grip
Colorful Arc Aluminum Padlock	Arc-shaped, seamless body	Lock body 39 x 19 x 41 mm, shackle 6 mm	Anodizing	Red, blue, silver, yellow, black and other colors

Every model in the table carries an aluminum alloy body and a hardened steel shackle. Zhejiang Rongtao Hardware Products Co., Ltd. offers the Arc-Shaped and Diamond versions in six sizes, while the two ABS cover versions are offered in five. The Colorful Arc model is listed with a fixed lock body size of 39 x 19 x 41 mm and a 6 mm shackle diameter.

Materials and Construction of Rongtao Aluminum Padlocks

Aluminum Alloy Lock Body

High-strength aluminum alloy keeps the padlock lightweight while resisting rust and corrosion, so it is not easy to rust in humid environments. Surfaces are polished or brushed on the Arc-Shaped, Diamond and ABS cover models, and anodized on the Colorful Arc model.

Brass or Stainless Steel Cylinder

The series description states that the lock cylinder is made of brass or stainless steel for smooth operation and long service life. The Arc-Shaped model uses a brass cylinder, brass pin tumblers and a brass latch, while the Diamond and Colorful Arc models list a copper cylinder, copper pins and a copper tongue. All three use an American-style double locking mechanism.

Hardened Steel Shackle

Every model uses a hardened steel shackle that is described as resistant to sawing and prying. The Arc-Shaped model carries a HARDENED marking on the shackle, and the Arc-Shaped, Diamond and Colorful Arc models are heat-treated for added strength and cut resistance.

Compared with iron padlocks, the aluminum material used by Zhejiang Rongtao Hardware Products Co., Ltd. is less prone to oxidation and rusting in outdoor rain exposure and humid warehouse environments, which gives the padlock a longer service life. Material quality is also managed upstream: the company established Yiwu Rongtao Renewable Resources Co., Ltd. to achieve strict control over raw materials for padlock production.

Arc-Shaped vs Diamond Aluminum Padlock: Choosing the Body Design

Both body designs share the same six size options and the same hardened steel shackle, so the choice comes down to appearance and structure.

Arc-Shaped Body

Brushed finish with a clean, wear-resistant appearance
Arc-shaped shackle that opens and closes smoothly
Pin tumbler cylinder for smooth key insertion and removal
Short and long shackles for different hole diameter and bundling needs

Diamond Body

Balanced force distribution across the diamond-shaped body
Better resistance to prying and compression than ordinary square padlocks
Integrally die-cast body without splicing gaps
Short and long arc-shaped shackles available in the same product line

ABS Cover Aluminum Padlock for Color-Coded Management

The Arc-shaped and Diamond Aluminum Padlock with ABS Cover models from Zhejiang Rongtao Hardware Products Co., Ltd. keep the aluminum alloy integrated die-cast body as the base and add an anti-slip colorful protective cover around the outside. Standard equipment includes a hardened arc-shaped steel shackle, a brass pin tumbler lock cylinder and a same-color plastic handle key. Orange, black and other colors are offered in five sizes from 20 to 60 mm.

The outer ABS cover prevents scratches and protects the lock body from impact.
The cover helps isolate rainwater and prevents cold metal from freezing hands in low-temperature environments.
Warehouses and construction sites can classify padlocks by color for different areas, which allows quick identification and management.
The precision lock cylinder offers smooth unlocking and a low mutual opening rate.
The Diamond version adds a diamond-shaped body with strong resistance to compression and prying.

Colorful Arc Aluminum Padlock: Anodized Color with a 6 mm Shackle

The Colorful Arc Aluminum Padlock is the color-focused model in the series. Its lock body is anodized for a uniform color that does not fade, and the seamless body design is described as resistant to compression and impact and not easy to deform or break. Rongtao lists it for industrial power facilities, warehouses, construction sites, campuses, supermarkets, cargo transportation and logistics.

Colorful Arc Aluminum Padlock Specifications

Lock Body MaterialAluminum Alloy

Shackle MaterialHardened Steel

Lock Body Size39 x 19 x 41 mm

Shackle Diameter6 mm

Surface TreatmentAnodizing

Unlocking MethodKey

Packaging OptionsWhite Box / Blister Card

Available ColorsRed / Blue / Silver / Yellow / Black and other colors

Aluminum Padlock Applications by Model

The Rongtao product pages list different application scenarios for each model family, which makes it easier to match a model to a site.

Arc-Shaped and Diamond

Home door locks Warehouses Storage cabinets Luggage Toolboxes Gyms Schools Offices Industrial equipment Cargo transportation Logistics

ABS Cover Models

Luggage Backpacks Wardrobe drawers Storage boxes Balcony small doors Toolboxes Gyms Schools Offices Industrial equipment Cargo transportation Logistics

Colorful Arc

Industrial power facilities Warehouses Construction sites Campuses Supermarkets Cargo transportation Logistics

Zhejiang Rongtao Hardware Products Co., Ltd. supplies customers in more than 20 export countries, and because all five models share the same aluminum alloy body and hardened steel shackle, a buyer can source one series for several sites, using ABS cover colors to separate areas and anodized colors on the Colorful Arc model for facilities such as warehouses and construction sites.

OEM/ODM Aluminum Padlock Factory: Customization Options

As a Custom Aluminum Padlock Manufacturer, Zhejiang Rongtao Hardware Products Co., Ltd. describes itself as a lock source factory that supports customized designs and a trusted supplier for overseas buyers. Its operation covers an 18,000 sqm factory area and 100 employees, and the customization services listed on the Aluminum Padlock product pages are shown below.

Brand LOGO Laser Marking Listed on all five Aluminum Padlock models, and the series also supports brand printing.
Color Customization The series supports color customization, and the Colorful Arc model lists red, blue, silver, yellow, black and other colors.
Dedicated Key Systems Listed on the Arc-shaped and Diamond Aluminum Padlock with ABS Cover models.
Special Specification Customization Listed on the two ABS cover models for buyers who need a specification outside the standard sizes.
Packaging Customization Listed on all five models, with white box and blister packaging as the standard options.

Custom orders are handled with the commitment to integrity and on-time delivery that Rongtao states for its clients worldwide. The company website is also published in English, French, Spanish, German, Arabic and Italian, so overseas buyers can review OEM/ODM Aluminum Padlock options in their own language before sending an inquiry.

How to Specify an Aluminum Padlock Inquiry

Step 1
Choose the model
Arc-Shaped, Diamond, ABS cover or Colorful Arc
Step 2
Choose the size
20 to 60 mm, or 39 x 19 x 41 mm for Colorful Arc
Step 3
Choose finish or color
Polishing, brushing, anodizing or ABS cover color
Step 4
Choose packaging
White box or blister packaging
Step 5
Add customization
LOGO laser marking, dedicated keys or special specifications

Sending these five points to Zhejiang Rongtao Hardware Products Co., Ltd. gives the sales team what it needs to prepare a quotation for your Aluminum Padlock order.

Request an Aluminum Padlock quotation Contact: Tony Xu Email: sales2@chinajiuzhou.com WhatsApp: +86-13735613379

View the Aluminum Padlock Series

Aluminum Padlock FAQ

Are aluminum padlocks secure enough for daily use?

Rongtao positions the Aluminum Padlock series for lightweight security applications such as luggage, stationery, suitcases and storage cabinets. Every model uses a hardened steel shackle described as resistant to sawing and prying, and the Arc-Shaped, Diamond and Colorful Arc models add a heat-treated shackle and an American-style double locking mechanism. For applications that call for a different material, Zhejiang Rongtao Hardware Products Co., Ltd. also produces brass, iron and stainless steel padlocks.

Do aluminum padlocks rust?

The aluminum alloy lock body is described as rust resistant and corrosion resistant, and it is not easy to rust in humid environments. On the ABS cover models, the outer cover also helps isolate rainwater.

What is the difference between an aluminum padlock and an iron padlock?

According to the Arc-Shaped and Diamond product pages, aluminum is less prone to oxidation and rusting than iron in outdoor rain exposure and humid warehouse environments, which gives it a longer service life. Rongtao lists iron padlocks as a separate product line, so buyers can compare both materials from one supplier.

What is an aluminum padlock used for?

The series is suited to luggage, stationery, suitcases and storage cabinets. Product pages also list home door locks, warehouses, toolboxes, gyms, schools, offices, industrial equipment, cargo transportation and logistics, while the Colorful Arc model adds industrial power facilities, construction sites, campuses and supermarkets.

What sizes of aluminum padlock are available?

The Arc-Shaped and Diamond models come in 20, 25, 30, 40, 50 and 60 mm. The two ABS cover models come in 20, 30, 40, 50 and 60 mm. The Colorful Arc model is listed with a 39 x 19 x 41 mm lock body and a 6 mm shackle diameter. Short and long arc-shaped shackles are offered on the Arc-Shaped and Diamond models to suit different hole diameter and bundling needs.

Can I get a custom logo or color on aluminum padlocks?

Yes. Brand LOGO laser marking and packaging customization are listed on all five models. Color customization is supported by the series and the Colorful Arc model, while dedicated key systems and special specification customization are listed on the two ABS cover models.

What does the ABS cover do on an aluminum padlock?

The ABS cover prevents scratches, protects the lock body from impact, helps isolate rainwater and stops cold metal from freezing hands in low temperatures. Its colors also let warehouses and construction sites classify padlocks by area for quick identification and management.

How many keys come with an aluminum padlock?

The specification tables list 3 keys for the Arc-Shaped, Diamond and Arc-shaped with ABS Cover models, and 2 keys for the Diamond with ABS Cover and Colorful Arc models. The ABS cover models use a same-color plastic handle key. Confirm the final key count on your quotation.

Do Rongtao aluminum padlocks have quality certifications?

The Arc-Shaped and Diamond product pages describe export quality that has passed multiple quality inspection certifications, and the company states thirty years of experience manufacturing EN 12320 certified padlocks. For the specific certificate or test report that applies to the model you plan to buy, ask the sales team when you request a quote.

Q10

Is Zhejiang Rongtao a factory or a trading company?

Zhejiang Rongtao Hardware Products Co., Ltd. describes itself as a lock source factory. It owns the Yiwu Shengping Lock Factory, which has nearly 30 years of padlock manufacturing experience.