PRO METAL & PLASTIC PRODUCTS CO., LTD.

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We inject aluminum alloy and zinc alloy , meet the international standards ISO、ASTM、DIN、BS, the capacity of our injection machine grows from 30 tons to 1000 tons.

The alloys meet different standards, and we highlight our further machining work and surface treatment in good quality and competitive pricing.

Aluminum die cast molding

Aluminum alloy & international standards could be met as below:

Japanese:ADC10、ADC12、AC3A、AC2B

USA:A380、A380.1、A360

Germany:AlSi12

UK:LM24、LM12

Chinese:ZLD101、ZLD102、ZLD104

Zinc die cast molding

Zinc alloy of Zamak 2, Zamak 3, Zamak 5, Zamak 7, Zamak 8, Zamak 12, Zamak 27, ZSG-3, the above and other zinc alloy composition catering to customer's requirement.

Normal zinc alloy chemical composition:

Alloy Al Cu Mg Fe Pb Cd Sn Zn
Zamak-2 3.9-4.3 2.7-3.3 0.035-0.06 0.02 max 0.003 max 0.003 max 0.001 max Spare
Zamak-3 3.9-4.3 0.015-0.03 0.02-0.06 0.015 max 0.005 max 0.003 max 0.001 max Spare
Zamak-5 3.9-4.3 0.075-1.25 0.03-0.08 0.1 max 0.007 max 0.003 max 0.001 max Spare
Zamak-7 3.9-4.3 0.01-0.02 0.01-0.02 0.075 max 0.002 max 0.002 max 0.001 max Spare
ZSG-3 3.5-4.3 0.5 max 0.02-0.06 0.1 max 0.015 max 0.004 max 0.003 max Spare

Further machining work

As per customer's drawing specification we apply further machining and/or precision CNC machining work onto our die cast parts to get the parts entirely in conformity with the drawing specifications.

The following is our normal applied machining work:

* Turning and cutting

* Milling

* Grinding

* Drilling and Reaming

* Threading

Surface Treatment / Finish

We apply surface treatment and supply the parts with finish according to customer's requirement:

Our main surface treatments:

* Sand blasting, stone tumbling, and ball polishing

* Fine polishing

* Zinc or chrome plating

* Powder coating / Painting