%%{init: {
  "theme": "base",
  "themeVariables": {"fontSize":"28px","fontFamily":"Calibri,Quicksand,sans-serif"},
  "flowchart": {
    "nodeSep":25,
    "rankSep":80
  }
}}%%
flowchart LR
    classDef default fill:#ffffff,stroke:#6699cc,stroke-width:2px,padding:24px;

    A["Ingot"] --> B["Heating"]
    B --> C["Cogging"]
    C --> D["Billet trimming"]

    D --> D1["Heating"]
    D1 --> D2["Forging"]
    D2 -.->|Rework| D
    D --> E["Sampling"]

    E --> F["Cutting"]
    F --> G["Hot rolling"]
    G --> H["Heat
treatment"]
    H --> I["Surface
inspection"]

    I --> J["Warehousing
for semi-finished"]
    I --> K["Straightening
and grinding"]

    K --> L["Surface
machining"]
    L --> M["UT inspection"]
    M --> N["Dimension
inspection"]

    linkStyle default stroke:#6699cc,stroke-width:1.5px;