Comprehensive quality control across the entire production process
“Quality is the foundation of sustainable development”
6-step production flow from raw material to finished product
High-purity raw materials melted under vacuum conditions to minimize gas content and impurities.
→ Defect-free internal structure - no porosity, no cracks, no pinholes
Molten metal solidified into billets through controlled continuous casting.
→ Uniform grain structure and reduced internal defects
Billets hot-extruded into hollow tubes with controlled dimensions.
→ Basic tube shape with dense structure
Multiple cold working processes refine tube dimensions and surface quality.
→ Precise tolerances and improved mechanical properties
Controlled annealing optimizes material properties and relieves internal stress.
→ Enhanced ductility, strength, and corrosion resistance
Straightening, cutting, surface treatment, and comprehensive inspection.
→ Compliance with ASTM / ASME / EN / JIS standards
7-step production flow for large-diameter welded piping
High-quality copper or CuNi strips selected and slit to precise width.
→ Consistent thickness and edge quality for welding
Strip gradually formed into tubular shape through roll forming.
→ Accurate geometry and stable forming process
Tube edges joined using advanced welding technology (TIG / HF welding).
→ Strong, continuous, and reliable weld seams
Internal and external weld beads removed or refined.
→ Smooth surface and uniform flow performance
Dimensional accuracy achieved through precision sizing.
→ Tight tolerances and dimensional accuracy
Annealing process improves metallurgical structure and relieves stress.
→ Enhanced ductility, corrosion resistance, and weld integrity
Cutting, surface treatment, and non-destructive testing (NDT).
→ Compliance with ASTM / ASME / EN / JIS standards
Comprehensive testing covering mechanical, chemical, metallurgical, and non-destructive testing
Tensile and mechanical testing
Chemical composition analysis
Metallographic structure analysis
Heat treatment of small components
Hardness measurement (HV & HR)
Surface and near-surface defect detection
Pressure and leak testing
Gas content analysis for material purity
26 National Patents driving continuous improvement
