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By certification 
Copper Tubing
Unidus Tube&Supply can supply copper tubing redrawn and manufactured to ASTM or equivalent tube standards, in coil and straight lengths in various diameters and wall thicknesses depending on the customer requirements.
Standards
ASTM B42 or any Special Alloy upon request
Unidus Tube&Supply also supply brass tubing re-drawn and manufactured to ASTM or equivalent tube standards, in coil and straight lengths in various diameters and wall thicknesses depending on the customer requirements.
Standards
C932 As per ASTM B405
Or any Special Alloy upon request
About Brass
Brass is the term used for alloys of copper and zinc in a solid solution. Typically it is more than 50% copper and from 5 to 20% zinc, in comparison to bronze which is principally an alloy of copper and tin. Despite this distinction, some types of brasses are called bronzes.
By varying the proportions of copper and zinc, the properties of the brass can be changed, allowing hard and soft brasses. The relatively low melting point (900-940 degrees C depending on composition) of brass and its flow characteristics make it a relatively easy material to cast.
