Mainly Material
stainless steel, carbon steel, steel, aluminium, brass, bronze, copper
Process
investment casting, lost wax casting, silica sol casting. water glass casting
Casting tolerance
Lost wax casting -- CT4-CT6 (GB/T 6414)
Standard
AISI, ANSI, ASTM, JIS, GB, ISO, DIN,
Certificate
SGS, ROHS, ISO, or as your requirement to do test by the third party
Machining
tapping, milling, grinding, drilling, cnc machining
Tolerance
+/-0.02mm or as drawing requirement
Surface treatment
polishing, electropolishing, mirror polishing, electrogalvanizing
Heat treatment
quchenging and tempering, annealing, normalizing
Casting Roughness
Ra 3.2-Ra12.5