Industry Container

Seamless Spinning + Welded Stainless Steel Chemical Equipment Component

1. Product Definition (Metal Spinning Component)

• Industry: Chemical Equipment / Process Systems
• Product Type: Metal spun + welded cylindrical container
• Manufacturing Route: CNC metal spinning + TIG welding + CNC finishing
• Material: SUS316L (UNS S31603) stainless steel
• Wall Thickness: 5.0 mm
• Size: Ø380 × H490 mm

2. Metal Spinning & Fabrication Process

Primary Forming:

• CNC plate rolling forming (pre-cylinder)
• GTAW / TIG longitudinal welding
• Argon shielded welding (99.99% Ar)
• Weld penetration ≥ 3.0 mm

Spinning / Forming Control:

• Controlled plastic deformation via CNC spinning-assisted calibration
• Rolling speed: 30–50 r/min
• Forming pressure: 8–12 MPa
• Stable 5 mm wall thickness uniformity

3. CNC Finishing Process

• CNC vertical machining center for port finishing
• G-code controlled precision trimming
• Dimensional accuracy:
  • Ø380 mm ±0.5 mm
  • H490 mm ±0.3 mm
• Deburring: 2800 r/min, 1000# abrasive

4. Surface Engineering (Chemical Service Grade)

• Pickling + passivation (nitric acid system)
• Surface roughness Ra ≤ 1.6 μm
• Weld seam smoothing + oxide removal
• Oil-free / contamination-free chemical surface condition

5. Quality Control (Industrial Grade)

• ISO 9001:2015 manufacturing system
• Spectrometric alloy verification (Cr/Ni/Mo controlled, ±0.05%)
• X-ray (RT) weld inspection (JB/T 4730 Class II)
• CMM dimensional inspection (±0.005 mm)
• Hydrostatic pressure test: 1.5× design pressure, 60 min, zero leakage
• Full traceability (batch + operator + equipment ID)

6. Metal Spinning Capability Highlights

This component is produced using a hybrid metal forming process:

• Plate rolling + welding preform
• CNC metal spinning reinforcement shaping (strain control forming)
• CNC precision machining finishing
• Weld integrity + geometry stabilization via post-machining calibration

Ensures:

• Controlled residual stress
• Stable cylindrical geometry
• Chemical corrosion resistance integrity
• Long-term pressure stability

7. Operating Conditions

• Temperature: -70°C to +450°C
• Pressure: 0.1–1.6 MPa
• Media: acids / alkalis / salts / organic solvents
• Environment: petrochemical / chemical / pharmaceutical process systems

8. Application Scenarios

• Chemical reactor auxiliary containers
• Pipeline transfer buffering vessels
• Corrosive medium storage modules
• Pharmaceutical process vessels
• Pilot-scale chemical processing equipment

9. Manufacturing Capacity

• CNC plate rolling machines ×2
• TIG welding stations ×4
• CNC machining centers ×3

Output Capacity:

• 30 pcs/day per production line
• Up to 1800 pcs/month

Lead Time:

• Small batch: 7–10 days
• Bulk: 12–20 days
• Urgent: 4–6 days

10. Custom Metal Spinning Capability

• Diameter: Ø200–800 mm
• Height: 200–1000 mm
• Materials: SUS304 / SUS316 / SUS316L
• Engineering feasibility evaluation: 3 working days

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