Industry Cover

Technical Specification Sheet

Chemical Industry Cover (Cover)

I. Core Parameters

• Industry:
  Chemical Industry
  
• Product Name:
  Chemical Equipment Cover
  
• Metal Material:
  Nickel-Based Alloy — Inconel® 625 (UNS N06625)
  
• Thickness:
  4.0 mm
  
• Coating:
  None
  
• Dimensions:
  Ø215 mm × H40 mm
  
• Dimensional Tolerance:
  In accordance with GB/T 1804-2000, tolerance class m
  

II. Manufacturing Process

1. Primary Forming Method

Advanced metal spinning (Metal Spinning) technology is employed.
Based on KMS’s mature CNC spinning system, nickel-based alloy blanks are precisely formed using CNC metal spinning equipment.
This process ensures uniform wall thickness (4.0 mm with minimal deviation), avoids casting-related defects such as porosity and cracking, and significantly improves overall structural strength and sealing performance.

2. Raw Material Pre-Treatment

Nickel-based alloy blanks undergo strict pre-processing, including:

• Surface cleaning to remove oil, contaminants, and impurities
  
• Flatness correction to eliminate deformation
  

This ensures defect-free raw material condition prior to spinning and prevents quality issues caused by substrate imperfections.

3. CNC Process Control

Professional CNC metal spinning equipment (referencing KMS-approved machines suitable for nickel-based alloy forming, such as high-precision CNC spinning lathes) is used.
Spinning paths are precisely programmed, with real-time monitoring and adjustment of critical dimensions (Ø215 mm × H40 mm), ensuring dimensional accuracy suitable for chemical equipment assembly while minimizing manual operation error.

4. Post-Processing

Mechanical deburring is performed (spindle speed: 3000 r/min; abrasive grit: 800#).
After compressed-air cleaning to remove residual debris, dimensional reinspection is conducted.
Acceptance criteria fully comply with the specified core parameters.

III. Quality Control

1. Standards Compliance

Manufactured under ISO 9001:2015 Quality Management System.
Quality control covers the entire process from raw material incoming inspection to machining and final delivery.

2. Raw Material Inspection

• Chemical Composition:
  Spectrometric analysis of Inconel 625 nickel-based alloy
  (elemental deviation ≤ ±0.05%)
  Key elements: Ni ≥ 58%, Cr 20–23%, Mo 8–10%
  
• Mechanical Properties:
  Hardness testing ≥ 210 HB, compliant with ASTM B443
  
• Surface Quality:
  Visual inspection + 10× magnification; no cracks, inclusions, or surface defects permitted
  

3. In-Process Inspection

Three critical inspection stages are implemented:

1. Dimensional Inspection:
   CMM measurement (accuracy ±0.005 mm) for Ø215 mm diameter, H40 mm height, and 4.0 mm thickness
   
2. Visual & Surface Inspection:
   Visual + 10× magnification; surface roughness Ra ≤ 1.6 μm; no scratches, dents, or burrs
   
3. Sealing Performance Test:
   Hydrostatic pressure testing at 1.2× rated working pressure, pressure holding for 30 minutes with zero leakage
   

4. Final Inspection

Sampling inspection conducted per GB/T 2828.1-2012, AQL 2.5.
Inspection items include dimensional verification, material revalidation, appearance, and sealing performance.
Qualified products are supplied with a traceability code, including raw material batch, processing equipment, and inspection personnel information.

IV. Production Capacity & Delivery

1. Capacity Assurance

Equipped with four KMS-XXX CNC metal spinning lathes.

• Average output per machine: 50 units/day
  
• Two-shift operation (8 hours per shift)
  
• Maximum monthly capacity: 6,000 units
  Supports parallel multi-machine production.
  

2. Lead Time

• Small batch orders (10–50 units): 5–7 working days
  
• Large batch orders (≥100 units): 10–15 working days
  
• Urgent orders: 3–5 working days (subject to production rescheduling)
  

3. Delivery Method

• Packaging: Shockproof foam + corrugated cartons (20 units per carton)
  
• Domestic delivery: Industrial door-to-door logistics
  
  • East / North / South China: 2–5 working days
    
  • Remote regions: 5–7 working days
    
• Overseas delivery: Sea or air freight, transit time 7–30 working days
  

4. Customization Capability

Supports customization of:

• Dimensions: Ø50–500 mm, H10–100 mm
  
• Materials: Inconel 718, Hastelloy C-276, and other nickel-based alloys
  

Customers must provide interface parameters and operating conditions.
Technical feasibility evaluation completed within 2 working days.

V. Application Scenarios

1. Primary Applications

Used at openings of chemical reactors, storage tanks, and transfer pipelines to provide sealing and protective functions, preventing media leakage and foreign material ingress.

2. Operating Conditions

• Temperature range: –196 °C to +980 °C (Inconel 625 properties)
  
• Media resistance: Strong acids, strong alkalis, salt spray, organic solvents
  
• Rated working pressure: 0.1–1.0 MPa
  
• Applicable industries: Fertilizer production, petrochemical, fine chemicals, pharmaceutical chemicals
  

3. Interface Requirements

Interfaces must match Ø215 mm × H40 mm dimensions.
Custom designs supported based on customer interface parameters.
Customized products require 3D interface drawings and operating condition data.

4. Extended Applications

Suitable for laboratory reaction devices, pilot-scale chemical equipment, and special chemical material storage vessels.

VI. Typical Application Examples

• Laboratory Reactors:
  Used as sealing end covers for small reactors, ensuring isolation of corrosive reagents and maintaining experimental safety and data accuracy.
  
• Pilot-Scale Equipment:
  Meets sealing requirements during process scale-up from laboratory testing to industrial production.
  
• Special Chemical Storage Tanks:
  Serves as inspection or observation port covers, leveraging the superior corrosion resistance of Inconel 625 to ensure safety and long-term stability during storage.
  

VII. After-Sales Service

1. Warranty

12-month warranty from acceptance date.
For quality-related issues such as dimensional nonconformance, material mismatch, or sealing failure, free replacement, return, or repair is provided.
All logistics costs are borne by the supplier.

2. Technical Support

• Pre-sales technical consultation for material selection (customer to provide operating conditions and interface parameters)
  
• Installation instructions supplied with products
  
• Phone or video-based installation guidance available
  
• Ongoing technical support during and after the warranty period
  

3. Post-Warranty Services

Paid repair and replacement services available.
Long-term maintenance agreements can be arranged, including periodic maintenance recommendations and industry technical updates.

Contact us and Request A Quote