Loading... Please wait.

The Alchin Long Group

Established in 1969, the Alchin Long Group is the parent company of leading global hardware brands Doric, Cowdroy, Colonial Castings, Azuma and Australian-based Lock & Roll.

Our Companies

The Alchin Long Group has a diverse portfolio of companies that provides wide ranging products and services, including industrial design, manufacturing and maintenance as well as cutting-edge research, testing capabilities and after sales service. 

Contact Us

For any enquiries about the Alchin Long Group or our brands, please get in touch.


Our Company Story

Behind every product is a story, beginning in a racehorse stable in Annandale, ALG has grown from a sand casting foundry into a globally traded business group that owns five major Australian brands: Doric Products, Cowdroy, Colonial Castings, Lock & Roll and Azuma Design.

The group has expanded in the past four decades to become a multinational family-owned business supplying innovative products and services around the globe.

Our People Story

The Alchin Long Group has become what it is today by putting people first. Empowering our people to create innovative solutions

Our Innovation Story

ALG developed its own design, development and testing capability to ensure its products met the highest possible quality and performance parameters.


Doric Celebrates 50th Birthday in 2022

Doric Celebrates 50th Birthday in 2022

March 3, 2022

Doric, Australia’s largest privately-owned window and door hardware manufacturer supplying to the fenestration industry, is celebrating its 50th birthday in 2022, with major festivities to be rolled out during the year to mark the milestone. From humble beginnings above an old horse stable in 1972, the company has grown to be a market leader in […]

The Alchin Long Group Celebrates 50 Years

The Alchin Long Group Celebrates 50 Years

January 17, 2020

2019 see the Alchin Long Group celebrate 50 years in business. An amazing milestone to reflect on the highs of growth & prosperity and the disaster of the Doric fire.

Doric Ducati Wins 2019 Australian Superbike Championship

Doric Ducati Wins 2019 Australian Superbike Championship

November 4, 2019

The Doric Desmosport Ducati ridden by Mike Jones won the 2019 Australian Superbike Championship at Sydney Motorsport Park last weekend.



Doric began in Sydney, Australia in 1972, as a hardware manufacturer supplying innovative door and window hardware for residential, commercial and architectural applications. Today, Doric has a global footprint which includes a network of branches located in Australian capital cities and regional locations as well as throughout Asia-Pacific (Doric Products Asia Pacific Sdn. Bhd., Kuala Lumpur, Malaysia) and Auckland, New Zealand. With a strong focus on R&D and a global reach, Doric is able to provide the highest level of design, testing, service and delivery standards our clients demand. Doric has been awarded multiple AWA (Australian Window Association) Design Awards to date, including ‘Most Innovative Component’ in 2007 and 2009.


Cowdroy is an Australian manufacturer of door track systems and accessories, with operations beginning in 1890. For the past century Cowdroy has maintained extremely high standards in the design and manufacturing of its products, which is still evident in each product today, from door seals to door tracks and weather seals. Cowdroy products are available from leading hardware and home improvement stores across Australia, with Cowdroy continually researching, designing and developing new and exciting products with Australian market demands in mind.


Azuma is an independently accredited testing facility and one of Australia’s largest privately-owned compliance testing and engineering companies. Azuma offers a wide range of industrial design, engineering and testing services throughout the Asia-Pacific region, including load testing, cycle testing, impact testing, accelerated corrosion testing and wind and water penetration testing. With both NATA and IQNet accreditation, Azuma is capable of testing to Australian and international standards.

Colonial Castings

Colonial Castings has its own dedicated aluminium moulding facility operating based in Sydney Australia. Colonial Castings have two main areas of product; security door components & accessories for the home and the design and manufacturing of outdoor furniture. Colonial Castings Manufacture and distribute through a network of retailers and distributors throughout Australia.

Lock & Roll

As the service and maintenance division of the Alchin Long Group, Lock & Roll is a Sydney-based home repairs company which specialises in repair and replacements for windows and doors. Lock & Roll has established trade related best practices to ensure reliable repair of most window and door problems. Customers of Lock & Roll can be assured of consistent applications of work to all window and door repairs as well as security problems. Franchise owners arrive on site with fully equipped vans so that they can get on with the job as soon as they arrive.

AMS Australia

AMS Australia was founded in Canberra in 2006 and strives to continuously deliver innovative and unique door hardware & high security solutions and sets the global standard in security hardware solutions. With endorsements by the Australian Government and recognition within the SEC (Security Equipment Catalogue), AMS specialises in offering a unique range of security products including, high security door solutions.

About us

Established in 1969, the Alchin Long Group is the parent company of leading global hardware brands Doric, Cowdroy, Colonial Castings, Azuma and Australian-based Lock & Roll.