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Mining Wear Parts - Tin Mining

TASEK STEEL- Your partner in wear solutions.




Tasek Steel started supplying alloy iron and steel castings to Koba Tin in 1988.

PT. Koba Tin ( an Indonesian - Australian joint venture ) operated open cast tin mines and bucket dredges in the 1980s to mine tin in Banka Island, Indonesia.


( Photomontage) Circa 1988, Alloy steel castings for tin dredge bucket.

Castings: Tasek "weld-on" Bucket - Lipped inserts (257 kg - 1 set 4 pieces)

Tasek Manganese Half bucket bushes (55 kg unit weight)

Material specification: Austenitic manganese steel to BS 3100 Grade BW 10. Equivalent.

Castings: Tasek “ weld-on “ Nickel Chrome Wear bars (7-20 kg unit weight)


Equipment: Bucket-lined tin dredge

Designed by engineering firm - F. W. Payne & Sons, England. Bucket for tin dredge casted by Bradken Foundry Malaysia.


Cast manganese bucket lip inserts save the mine time and money.

The front area is one of the higher wear areas in the bucket. Replacement with new dredge buckets will be costly and transportation cost too as Koba Tin’s mine is located 1500 miles from our foundry. Castings travel 500 miles by trucks to Port of Singapore. There it will travel 1000 miles by sea to Banka Island, Island.


The bucket-lipped insert cast component was designed by the Koba Tin’s mine engineers. A full-sized bucket-lipped mock-up was fabricated at the workshop of the mine and sent to us.

Tasek made patterns and the cast manganese bucket-lipped samples were sent back for approval.

Rebuilding the front with cast bucket-lipped inserts saved the mines time and money.

A bucket-lined dredge can weigh anywhere from 2000 to 5000 tons. Each bucket can weigh 1 to 2 tons. The bucket-lined loop can have 100 to 150 pieces of the bucket.


Bucket-lined dredges scoop and fill the buckets with tin-bearing gravel and water at the bottom of the mining pond. It can reach down depths of 30 to 40 meters; the mining area deposit can vary from sand, mud peat, hard clay, tin placer, boulder beds, incised gullies to granite bedrock.

These are emptied into mechanical jigs and screens separating tin ore from gravel etc.

Waste material is discharged at the back of the dredge through chutes.

By 2004 the industry was in decline due to low tin prices, low tin deposits, and high operating costs.


TASEK STEEL - KOBA TIN. 16 Years serving the Indonesian Mining Industry (1988 to 2004).

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