The major manufacturing production processes of stainless steel water bottle

Bottle Body Production: 1.raw material → 2.shaping of outer cup and inner tank → 3.welding getter on the bottom piece → 4. copper lining on the surface of inner tank (optional) → 5. welding to join the outer shell with inner tank together → 6. ultrasonic cleaning → 7. vacuum producing (test vacuum 100% first time) → 8. electrolysis → 9. polishing (test vacuum 100% second time) → 10. decoration (painting, powder coating, water transfer, heat transfer printing, laser engraving, silk-screen printing etc.)Bottle Cap/Lid Production: 1. plastic raw material → 2. injection molding → 3. assemblyBottle Assembly and Packaging: 1. confirm packaging requirement per PO → 2. prepare all parts → 3. cleaning dust → 4. inspect parts → 5. assembly bottle body and cap → 6. add sticker or label → 7. on-line 100% inspection → 8. pack into gift box → 9. pack into carton box → Finish

There are more than 100 production processes for a single stainless steel water bottle and it is often the case that an order requires more than 30 days of production lead time from raw materials to final shipment. 

Purchasing raw material

Cutting pipe

Water expansion

Cutting

Bulging

Rolling angle

Shrinking bottom

Bottom cutting

Reinforcement

Flatting of the top shell

Bottom punching

Flat-bottomed mouth

Flat tube

Rolling up the corners

Flatting the inner shell top side

Thread rolling

Cleaning and drying

Knock inspection

Joint welding

Water test and leak detection

Matching cup mouth

Welding bottom

Spot welding

Pressing the midsole 

Welding inspection of the bottom

Vacuum inspection

Temperature measurement

Electrolysis

Polishing

Inspection and polishing

Pressing the outsole

Decoration of spray painting or powder coating

Inspection of spray painting & powder coating

Laser engraving customized logo

Packaging

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