Manufacturing & Testing Capabilities
Quality Management
Comprehensive quality control across the entire production process
“Quality is the foundation of sustainable development”
- Comprehensive QMS per ISO 9001 covering raw material procurement through delivery
- Strict quality control at every critical production stage
- All processes fully traceable for marine and offshore compliance
- 100% inspection before delivery
- Third-party inspection by accredited organizations available upon request
Seamless Tube Manufacturing Process
6-step production flow from raw material to finished product
Melting
High-purity raw materials melted under vacuum conditions to minimize gas content and impurities.
→ Defect-free internal structure - no porosity, no cracks, no pinholes
Continuous Casting
Molten metal solidified into billets through controlled continuous casting.
→ Uniform grain structure and reduced internal defects
Extrusion
Billets hot-extruded into hollow tubes with controlled dimensions.
→ Basic tube shape with dense structure
Cold Drawing / Rolling
Multiple cold working processes refine tube dimensions and surface quality.
→ Precise tolerances and improved mechanical properties
Heat Treatment
Controlled annealing optimizes material properties and relieves internal stress.
→ Enhanced ductility, strength, and corrosion resistance
Finishing & Inspection
Straightening, cutting, surface treatment, and comprehensive inspection.
→ Compliance with ASTM / ASME / EN / JIS standards
Welded Tube Manufacturing Process
7-step production flow for large-diameter welded piping
Strip Preparation
High-quality copper or CuNi strips selected and slit to precise width.
→ Consistent thickness and edge quality for welding
Forming
Strip gradually formed into tubular shape through roll forming.
→ Accurate geometry and stable forming process
Welding
Tube edges joined using advanced welding technology (TIG / HF welding).
→ Strong, continuous, and reliable weld seams
Weld Seam Treatment
Internal and external weld beads removed or refined.
→ Smooth surface and uniform flow performance
Sizing & Straightening
Dimensional accuracy achieved through precision sizing.
→ Tight tolerances and dimensional accuracy
Heat Treatment
Annealing process improves metallurgical structure and relieves stress.
→ Enhanced ductility, corrosion resistance, and weld integrity
Finishing & Inspection
Cutting, surface treatment, and non-destructive testing (NDT).
→ Compliance with ASTM / ASME / EN / JIS standards
Testing Capabilities
Comprehensive testing covering mechanical, chemical, metallurgical, and non-destructive testing
Universal Testing Machine 30T
Tensile and mechanical testing
OES Spectrometer
Chemical composition analysis
Metallographic Microscope
Metallographic structure analysis
Laboratory Heat Treatment Furnace
Heat treatment of small components
HV & HR Hardness Tester
Hardness measurement (HV & HR)
Eddy Current Machine
Surface and near-surface defect detection
Hydrostatic Testing Machine
Pressure and leak testing
O2/N2/H2 Analyzer
Gas content analysis for material purity
QMS & Certifications
Quality Assurance Documents
- Mill Test Certificates (EN 10204 3.1 / 3.2)
- Third-party inspection reports
- Chemical and mechanical test reports
- Dimensional inspection records
Technology & Innovation
26 National Patents driving continuous improvement