Stamping - holyprecision

CNC Machining Finishes

Standard/As manufactured

After manufactured processing with visible tooling marks on the parts.

Bead blasting

Bead blasting creates a smooth, uniform surface finish on the part, covered the machining marks on the surface

Sanding

A surface smoothing and polishing method done with the aid of a sandpaper or sand..

Anodizing

Anodizing can be broken down into two broad sub-categories: decorative and hard anodizing. The main differences between the two is how thick and durable the coating is, and the exact process used to create it.Anodizing is most common with aluminium parts.

Electroplating

An electrochemical process cleans steel parts to reduce corrosion and improve appearance, by making the metal brighter. Removes about 0.0001”-0.0025” of the metal. Conforms to ASTM B912-02.

Powder coating

Powder spraying is to spray powder coatings onto the surface of workpieces by powder spraying equipment (electrostatic spraying machine). Under the action of electrostatic force, the powder will evenly adsorb on the surface of workpieces and form powder coatings.

Plating

Nickel plating; Chrome plating; Zinc plating; Silver/gold plating;

Brushing

It is achieved by using a grit belt or wheel, non-woven abrasive belt or pad to produce a polished finish in a metal part.

Polishing

Used for creating high-quality surface finish in CNC machined parts

Black Oxide

The black oxide coating is produced by a chemical reaction between the iron on the surface of the ferrous metal and the oxidizing salts present in the black oxide solution.

Blank Size	1500x4000mm, We accommodate larger part volumes upon request.
Standard Leadtime	7-14days
Sheet Thickness	0.2~100mm
Gerneral Tolerance	±0.1mm
Forming and bending	+/- 0.030"
Bend to hole or feature	+/- 0.010"
Linear dimensions excluding locations to bends	+/- 0.010"
Angularity	+/- 2 degrees
Surface roughness (blank material)	Ra 125 uin max
Surface roughness (timesave)	Ra 100 uin max
Welding	Argon arc welding/Arc welding /Laser welding/Electric weldi ng
Remark	Sharp edges will be broken and deburred by default unless specified.

Dimension Detail	Tolerance
Edge to Edge, Single Surface	+/- 0.010 in. (+/- 0.254mm)
Edge to Hole, Single Surface	+/- 0.010"
Hole to Hole, Single Surface	+/- 0.010"
Hole Diameter, Single Surface	+/- 0.010"
Bend to Edge / Hole, Single Surface	+/- 0.010"
Edge to Feature, Multiple Surface	+/- 0.030”
Over Formed Part, Multiple Surface	+/- 0.030”
Bend Angle	+/- 2 degree

Holy Sheet Metal Fabrication Capabilities

Sheet Metal Tolerances Reference Table