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Linch Machinery Co. Ltd.
Linch Machinery Co. Ltd. --- Global supplier of sanitary stainless steel valves and fittings
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Linch Machinery Co. Ltd. Quality Info

Linch Machinery Co. Ltd.
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Linch Machinery Co. Ltd.
City: Wuxi
Province/State: Jiangsu
Country/Region: China
Tel: 86-510-66066856
Contact Person:
Miss Sarah Ding
Quality Control

Production and Quality Control

 

1. The raw material we use:

 

                                       Sealing Material               Stainless Steel Stick (304 / 316L)

 

               Forged Parts                                 Casting Parts                       Stainless Steel Tube

 

2. How we control material quality?

 

The following tests are 100% conducted on-site:

 

    Visually check appearance and surface quality          PMI test to verify metal element ratio

 

3. Forming Machine Process

 

        CNC Lathe Processing              Milling Machine Processing             Punching Press Drilling            

 

        Punching Press Drilling                Cold Forming Molding                       Welding Assembly

 

4. How do we control the quality of machining

 

          CNG Lathes from                   Advanced Milling Machines                      UT Inspection  

         YAMAZAKI MAZAK                                                                          to ensure welding quality

 

              Weld Polishing            100% Appearance & Size Inspection    Size & Appearance Shaping

                                                  online (thickness, roundness, etc.)

 

5. Surface Treatment

 

We offer the following processes to choose:

                        Mechanical Polishing (MP)                       Acid Cleaning for Anti-corrosion

                 to improve brightness (gloss, matte)

 

                           Electrolysis Polish (EP)                 Custom Process: Bright Annealing treatment

                  to improve surface smoothness                   eliminate strees to improve toughness

 

6. How do we ensure surface quality

 

                                 Visual Inspection                                     Roughness Detection

 

7. Assembly and marking

 

                                    Assembly                                                         Marking

 

8. How do we ensure finished product quality (FQC inspection)

 

             Visual Inspection                Material Grade Measurement             Dimension Inspection

 

         Roughness Detection                  Roughness Detection                          Leakage Test

 

9. Cleaning and packing

 

       Ultrasonic Cleaning Sink                           Packing                                        Packing

Company Profile

Linch Machinery Co. Ltd.

Tel:86-510-66066856

Fax:86-510-66066856

Contact Person: MissSarah Ding

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