Copper Tube Manufacturing Process at Ruby Copper’s Advanced Production Facilities

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I. Introduction to Ruby Copper Manufacturing Facilities

Ruby Copper is one of Vietnam’s leading copper tube manufacturers, specializing in high-quality copper tubing for HVAC, refrigeration, heat exchange, and industrial applications.

With two large-scale manufacturing facilities located in Pho Noi A Industrial Park, Hung Yen Province, Vietnam, Ruby Copper has established itself as a trusted supplier for both domestic and international markets.

As a Vietnamese-owned manufacturer, Ruby Copper takes pride in developing and producing copper tubes entirely in Vietnam, combining local expertise with advanced international production technologies.

Our products comply with major international standards, including:

  • ASTM B280, ASTM B68, ASTM B88 (USA)
  • JIS H3300 (Japan)
  • EN 12735 (Europe)
  • AS/NZS 1571 (Australia & New Zealand)

These certifications reflect Ruby Copper’s commitment to continuous improvement in raw materials, production technology, manufacturing environments, and quality management systems.

II. Advanced Copper Tube Production Technology

Ruby Copper operates modern production lines imported from globally recognized copper processing equipment manufacturers.

Unlike traditional extrusion-based production methods, Ruby Copper utilizes advanced Continuous Casting and Rolling Technology, which offers significant advantages in:

  • Product consistency
  • Dimensional accuracy
  • Material integrity
  • Production efficiency
  • Manufacturing capacity

The entire production process is managed under a strict quality control system aligned with Japanese manufacturing standards.

Standard Copper Tube Production Process

The manufacturing process includes:

  1. Copper cathode melting
  2. Continuous casting
  3. Rolling and drawing
  4. Annealing
  5. Straightening and sizing
  6. Surface treatment
  7. Inspection and testing
  8. Packaging

Additional Processes for Inner Grooved Copper Tubes

For inner grooved copper tubes used in high-efficiency heat exchangers and air conditioning systems, two additional manufacturing stages are applied:

In-Line Annealing Technology

Using electromagnetic induction heating technology, copper tubes are annealed directly during production at speeds reaching 500–600 meters per minute.

This process ensures optimal material properties and prepares the tube for subsequent grooving operations.

Inner Groove Forming

Specialized grooving tools create precision helical grooves inside the tube wall.

These internal grooves significantly increase heat transfer efficiency compared with conventional smooth copper tubes, making them ideal for modern air conditioning and refrigeration equipment.

III. Strict Quality Control Procedures

Ruby Copper operates a comprehensive quality assurance system designed to ensure every product meets the highest performance and reliability requirements.

Products that fail to satisfy quality standards are rejected and never released to customers.

Chemical Composition Analysis

 

Advanced spectrometers are used to verify copper purity and control trace elements, ensuring compliance with international specifications.

Eddy Current Defect Inspection

Real-time eddy current testing systems continuously monitor production to detect surface and subsurface defects.

Hardness Testing

Hardness measurements are condu

Tube quality inspection process for defect detection and inner cleanliness control
Ruby Copper Vietnam maintains strict tube quality inspection process standards through automatic defect detection and inner cleanliness testing.

cted to classify products according to customer requirements, including:

  • Soft annealed
  • Bright annealed
  • Half-hard
  • Hard temper

Mechanical Property Testing

Specialized tensile testing equipment evaluates:

  • Tensile strength
  • Yield strength
  • Elongation

These tests ensure durability and workability during installation and operation.

Grain Size Examination

Microscopic analysis is performed to verify uniform grain structure throughout the copper tube, contributing to consistent product performance.

Non-Destructive Testing

Products undergo expansion and flaring tests in accordance with international standards to confirm their suitability for fabrication and installation.

Tube quality inspection process for hardness and mechanical testing of copper tubes
Hardness and tensile strength inspections are essential steps in the tube quality inspection process at Ruby Copper Vietnam.

Internal Cleanliness Testing

Distillation analysis is used to measure residue levels inside the tube, ensuring cleanliness required for refrigeration and HVAC applications.

Residual Oil Testing

Advanced infrared absorption technology is applied to measure residual lubricant levels and verify the cleanliness of the tube interior.

IV. Manufacturing Excellence Recognized Worldwide

Ruby Copper products are trusted by customers across Asia, the Middle East, Europe, and other international markets.

By continuously investing in technology, quality control, and manufacturing capability, Ruby Copper demonstrates that copper tubes manufactured in Vietnam can successfully compete with leading global brands in terms of quality, performance, and reliability.

Today, Ruby Copper continues its mission of delivering world-class copper tube solutions while strengthening the reputation of Vietnamese manufacturing on the international stage.

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