Material: Variable steel
Machining processes: 25 steps
Investment casting
Turning by CNC lathe
Drilling
Punching/stamping splines
Milling
Zinc-plating
Grinding(ID grinding and OD grinding)
Inspection by special gages
Packaging
Most accurate tolerance for machining: +/-0.008mm
Surface finish: Ra. 0.4 after grinding
Ra1.6-3.2 only by investment casting
Surface finish treatment: Zinc-plating, chrome plating, nickel plating, electro-polishing for stainless steel, duplex steel, 17-4pH steel, mirror polishing for stainless steel etc...
Packaging: Bubble bags+cartons+sea-worthy strong plates.
VGR--Qingdao Vanguard Golden Relation Co., Ltd.
QDVGR always is committed to QDOS: Higher Quality, on-time Delivery, cOst savings and better Service. During more than 10 years specialized at investment casting and machining, we accumulate much more experience for OEM products. By this, we can do better and win-win for long term.
QDVGR is one professional manufacturer for investment castings, precision castings, middle-temperature green-wax silica-sol castings, low-temperature sodium silicate white wax castings, valves parts, pump parts and assembly products and machining. Our parts and products are exported to UK, Italy, German, Holland, Australia, Japan, USA, Panama and middle-east countries. We hold ISO quality control system to run our factory, which can ensure our parts and products quality very well.
The main capacity of us is as below,
Investment casting: 60tons per month, actually 30tons now, idling 30tons with enough capacity for new and more orders;
Machining: 4 sets CNC lathe with +/-0.015mm tolerance only by turning
Castings and machining:
Size: From 10g to 45kg each piece
Surface finish treatment: Variable such as zinc-plating; Chrome-plating, electro-polishing, mirror-polishing, brush-p olishing, chemical black, powder coating, case harden etc...
Assembly:
Stainless steel ball valves for 1-PC, 2-PC, 3-PC and pneumatic by investment casting, machining, aseembly and pressure-testing;
Stainless steel quick connection couplings from 1/2'' to 6'' by investment casting, machining and assembly in house
Pivot hinges by investment casting, machining, brush-polishing and assembly in house;
Extreme bearings by investment casting, machining, brush-polishing and assembly in house;
Technical and engineering
5 Engineers with 7 to 20 years working experience;
3 quality control people with more than 7 years working experience;
2 technicians with more than 5 years working experience.
We sincerely welcome all of friends in the world to visit our factory for business cooperation, we are expecting for a brilliant future with you together. Give us one chance, let us show you QDOS. Thank you.
