YhmcoAbout DAJA

Quality / Certificates

We believe great reputation comes from excellent and stable quality. From material incoming to shipment, we control every process strictly.
We'll keep on educating all employees to participate in quality management. To produce customer satisfied Steel Pipe Fittings.

Pipe Fittings

Remark: 1. "First article inspection" and "self-checking" were hold in each process.
2. "*" It is meaning non-essential processes.
  • 1IQC
    Material Receipt
  • 2IPQC
    Sawing
  • 3IPQC
    Forming
  • 4IPQC
    H.T.
  • 5IPQC
    Picking
  • 6IPQC
    Sizing
  • 7FQC
    NC-Beveling
  • 8IPQC
    *EP
  • 9IPQC
    Passivating
  • 10IPQC
    High Purity Cleaning
  • 11IPQC
    Visual-check in Cleanroom
  • 12IPQC
    Cleanroom Packaging
  • 13OQC
    Finished Products Warehousing
  • 14
    Shipment

Gas Fittings

Remark: 1. "First article inspection" and "self-checking" were hold in each process.
2. "*" It is meaning non-essential processes.
  • 1IQC
    Material Receipt
  • 2IPQC
    Sawing
  • 3FQC
    CNC Processing
  • 4IPQC
    *EP
  • 5IPQC
    Passivating
  • 6IPQC
    High Purity Cleaning
  • 7IPQC
    Visual-check in Cleanroom
  • 8IPQC
    Cleanroom Packaging
  • 9OQC
    Finished Products Warehousing
  • 10
    Shipment