Gunmetal Pipe and Tube
Gunmetal Pipe and Tube are precision-engineered components crafted from a copper alloy primarily consisting of copper, tin, and zinc. Known for their excellent corrosion resistance, high tensile strength, and superior machinability, these pipes and tubes serve critical roles in various industrial applications. Their robust construction makes them ideal for use in environments where durability and resistance to wear are paramount.
The tubes and pipes are available in a range of sizes and thicknesses, meeting stringent industry standards such as ASTM B135 and BS EN 1982. These specifications ensure consistent mechanical properties, including tensile strength, elongation, and hardness, which are vital for maintaining structural integrity under high pressure and temperature conditions. The smooth finish and precise dimensions facilitate seamless integration into complex piping systems.
Widely utilized in marine engineering, hydraulic systems, and heavy machinery manufacturing, these components offer reliable performance in harsh environments. Their resistance to saltwater corrosion makes them especially suitable for offshore and shipbuilding applications. Additionally, the alloy’s excellent thermal conductivity supports efficient heat exchange in cooling and heating systems.
Manufacturers focus on quality control and compliance with international standards to ensure the products are export-ready. Packaging is designed to protect against damage during transit, and documentation includes certifications such as Mill Test Reports (MTRs) and compliance with ISO 9001 quality management systems. This attention to detail ensures that industrial buyers receive products that meet global expectations and perform reliably in demanding operational contexts.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Gunmetal Pipe and Tube Are Preferred by Global Buyers
- ✔ Factory Pricing: Direct manufacturer rates with bulk stock
- ✔ Certified Quality: ISO & 3rd-party tested, EN 10204 certified
- ✔ Export-Ready: Sea-worthy packaging for on-time delivery
- ✔ Fast RFQs: Quick quotes for custom sizes & quantities
- ✔ Traceability: 100% heat number tracking from raw material to finished product
Trusted by industries like oil & gas, petrochemicals, power, marine, and heavy engineering.
- Manufacturing Capacity: 500 MT / Month
- Export Experience: 15+ Years
- Countries Served: 50+
- Annual Export Volume: 5,500 MT
Table of Contents
- 1. What is Gunmetal Pipe and Tube
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Gunmetal Pipe and Tube
- 4. Why Global Buyers Source from Ragnar Metals and Tubes
- 5. Features
- 6. Technical Overview
- 7. Specifications
- 8. Available Grades
- 9. Available Sizes
- 10. Chemical Properties
- 11. Mechanical Properties
- 12. Physical & Thermal Properties
- 13. Electrical Resistivity
- 14. Equivalent Grades
- 15. Manufacturing Process & Heat Treatment
- 16. Various Types
- 17. Applications & Uses
- 18. Industries We Serve
- 19. Latest Price List
- 20. MOQ & Payment Terms
- 21. Export Packaging & Shipping
- 22. Cities We Supply in India
- 23. Countries We Export Worldwide
- 24. Our Certifications
- 25. Quality Inspection & Testing
- 26. Our Other Product Types
- 27. People Also Search For
- 28. Frequently Asked Questions
- 29. About Ragnar Metals and Tubes
How to Choose the Right Gunmetal Pipe and Tube
India is home to hundreds of manufacturers ranging from small job shops to large ISO-certified exporters. International and domestic buyers typically evaluate manufacturers based on quality compliance, production capacity, export experience, and pricing transparency.
- Certification & international standards (ASME, ASTM, EN)
- Manufacturing capability vs trading activity
- Export documentation & inspection support
- Stock availability & lead time reliability
- Past supply experience in oil & gas, EPC & heavy industries
Comparison Factors Among Gunmetal Pipe and Tube
| Evaluation Factor | Small Local Suppliers | Trading Companies | ISO-Certified Manufacturers |
|---|---|---|---|
| Manufacturing Control | Limited | None | Full in-house / audited partners |
| International Standards | Basic | Depends on source | ASME / ASTM / EN |
| Inspection & MTCs | Limited | Inconsistent | EN 10204 3.1 / 3.2 |
| Export Experience | Low | Medium | 50+ countries |
| Risk for EPC Projects | High | Medium | Low |
International buyers typically prefer ISO-certified manufacturers for large-scale or critical applications due to better quality control, documentation, and lower project risk.
Why Global Buyers Choose Ragnar Metals and Tubes
Ragnar Metals and Tubes is a trusted ISO 9001:2015 certified manufacturer and global exporter of ferro alloys and metal products, supplying consistent, high-quality materials to customers across USA, UK, Europe, Middle East, Africa, and Asia-Pacific. Our focus on quality assurance, cost efficiency, and on-time delivery makes us a preferred sourcing partner for international buyers.
| Key Advantage | Buyer Benefit |
|---|---|
| ISO 9001:2015 Certified Manufacturing | Consistent quality with documented QA systems and process control |
| ASME / ASTM / EN Compliant Products | Globally accepted standards with EN 10204 3.1 / 3.2 MTCs |
| Lower Manufacturing & Sourcing Costs | Save up to 15–20% compared to European suppliers |
| Favorable Exchange Rate Advantage | Reduced landed cost for international importers |
| In-House Testing & Inspection Facilities | Strict chemical, mechanical & dimensional quality checks |
| Bulk Stock & High Production Capacity | Fast order fulfillment and stable supply for large projects |
| Custom Sizes & Drawing-Based Manufacturing | Products manufactured exactly to buyer specifications |
| Export-Grade Packaging & Global Logistics | Sea-worthy packing, palletization & worldwide shipping support |
| Faster Global Shipping Routes | Optimized logistics for Middle East, Africa & Southeast Asia |
| Technical & After-Sales Support | Project assistance, documentation & responsive RFQ handling |
| Trusted by Global Steel & EPC Companies | Proven export experience across 50+ countries |
Features of Gunmetal Pipe and Tube
- ✔ Excellent corrosion resistance
- ✔ High strength and durability
- ✔ Good machinability for precise applications
- ✔ Low friction properties for reduced wear
- ✔ Resistance to seawater, making it suitable for marine applications
- ✔ Wide range of sizes and custom fabrication options available
Technical Overview of Gunmetal Pipe and Tube
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Gunmetal Pipe | Copper (85%), Tin (5%), Zinc (5%), Lead (5%) | Used in plumbing, steam, and gas lines due to its corrosion resistance. | ASTM B62, ASTM B584 |
| Gunmetal Tube | Copper (90%), Tin (10%) | Ideal for hydraulic applications and marine fittings due to its strength and durability. | BS 1400, ASTM B150 |
| Gunmetal Fittings | Copper (88%), Tin (10%), Lead (2%) | Commonly used in valve and fitting applications where high strength is required. | ISO 9001, ASTM B61 |
Specifications Table
| Material | Gunmetal (Copper - 88%, Tin - 10%, Zinc - 2%) |
|---|---|
| Grades | C83600, C84400 |
| Standard | ASTM B271, ASTM B438 |
| Size Range | 1/2 inch to 12 inches nominal pipe size |
| Length | Standard lengths of 6 meters (20 feet) or as per requirement |
| Form | Seamless and Welded Pipe and Tube |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| C84400 Gunmetal | Cu: 85%, Sn: 5%, Zn: 5%, Pb: 5% | Marine fittings, valves, and pump components |
| C83600 Gunmetal | Cu: 88%, Sn: 4%, Zn: 4%, Pb: 4% | Hydraulic components, general engineering |
| C90500 Gunmetal | Cu: 85%, Sn: 7%, Zn: 5%, Pb: 3% | Architectural applications, plumbing |
| C83800 Gunmetal | Cu: 86%, Sn: 5%, Zn: 5%, Pb: 3% | Automotive components, marine hardware |
| C86500 Gunmetal | Cu: 88%, Sn: 6%, Zn: 4%, Pb: 2% | Electrical fittings, industrial machinery |
Available Sizes of Gunmetal Pipe and Tube (MM)
| Size (MM) | Size (MM) |
|---|---|
| 15 | 20 |
| 25 | 32 |
| 40 | 50 |
| 63 | 75 |
| 90 | 100 |
| 125 | 150 |
| 200 | 250 |
| 300 | 350 |
| 400 | 450 |
| 500 | 600 |
Chemical Properties of Gunmetal Pipe and Tube
| Element | Composition (%) |
|---|---|
| Copper (Cu) | 85.0 - 90.0 |
| Tin (Sn) | 5.0 - 10.0 |
| Lead (Pb) | 1.0 - 5.0 |
| Zinc (Zn) | 0.0 - 2.0 |
| Iron (Fe) | 0.0 - 2.0 |
| Nickel (Ni) | 0.0 - 1.0 |
| Phosphorus (P) | 0.0 - 0.5 |
| Silicon (Si) | 0.0 - 1.0 |
Mechanical Properties of Gunmetal Pipe and Tube
| Property | Value |
|---|---|
| Tensile Strength | 210-240 MPa |
| Yield Strength | 100-150 MPa |
| Elongation | 5-15% |
| Hardness (Brinell) | 70-110 HB |
| Modulus of Elasticity | 110-120 GPa |
Gunmetal Pipe and Tube – Physical & Thermal Properties
Density of Gunmetal Pipe and Tube
| Property | Metric | Imperial |
|---|---|---|
| Density | 8,500 kg/m³ | 531 lb/ft³ |
Melting Point of Gunmetal Pipe and Tube
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1,050 °C | 1,922 °F |
Specific Heat of Gunmetal Pipe and Tube
| Specific Heat of Gunmetal Pipe and Tube | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 380 | 20-100 | Solid |
| 400 | 100-200 | Solid |
| 420 | 200-300 | Solid |
Electrical Resistivity of Gunmetal Pipe and Tube
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 60 | 20 | As Cast |
| 62 | 100 | |
| 64 | 200 | |
| 66 | 300 | |
| 68 | 400 | |
Equivalent of Gunmetal Pipe and Tube
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| BS 1400 | CC491K | C83600 |
| ASTM B271 | C93200 | C93200 |
Manufacturing Process & Heat Treatment of Gunmetal Pipe and Tube
Annealing
Annealing is a heat treatment process that involves heating gunmetal to a specific temperature, followed by a controlled cooling process. This procedure is aimed at relieving internal stresses, improving ductility, and enhancing the overall machinability of the material. Typically, the gunmetal is heated to around 650-700°C and then cooled slowly in air or a furnace.
Forging
Forging is a manufacturing process that involves shaping gunmetal by applying compressive forces. This process is performed at elevated temperatures, usually between 700-900°C, which makes the material more malleable. Forging enhances the mechanical properties of gunmetal, including its strength and toughness, by refining the grain structure and eliminating internal defects.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 850-900 | Water or Oil | To increase hardness and strength by transforming the microstructure. |
| Tempering | 300-500 | Air | To reduce brittleness and increase toughness while maintaining hardness. |
| Stress Relieving | 400-600 | Air | To relieve residual stresses from previous processes and improve dimensional stability. |
The combination of these processes ensures that gunmetal pipes and tubes achieve the desired mechanical properties for various applications, including resistance to corrosion and wear, making them suitable for industrial use.
Various Types
Gunmetal Pipe - Standard
- Diameter: 1 inch to 12 inches
- Condition: Annealed
- Applications: Plumbing, Marine, and Industrial Uses
Gunmetal Tube - Seamless
- Diameter: 1/2 inch to 6 inches
- Condition: Cold Drawn
- Applications: Structural, Automotive, and Aerospace
Gunmetal Pipe - Threaded
- Diameter: 1 inch to 8 inches
- Condition: Hot Finished
- Applications: Gas and Oil Transport
Gunmetal Tube - Welded
- Diameter: 3/4 inch to 4 inches
- Condition: As Welded
- Applications: HVAC and Water Supply Systems
Applications & Uses
- Oil & Gas Industry: Pipelines, process piping, and high-pressure fluid handling systems.
- Petrochemical & Refineries: Reactors, heat exchangers, and chemical processing units.
- Water Treatment Plants: Filtration systems, storage tanks, and corrosion-resistant piping.
- Pharmaceutical Industry: Hygienic piping, sanitary fittings, and cleanroom equipment.
- Food & Beverage: Processing lines, storage vessels, and contamination-free pipelines.
- Automobile & Engineering: Exhaust systems, structural parts, and precision components.
- Power & Energy Sector: Boilers, condensers, and turbine piping systems.
- Marine & Offshore: Shipbuilding, offshore platforms, and coastal infrastructure.
- Construction & Infrastructure: Structural frameworks, bridges, and industrial buildings.
Industries We Serve
Our stainless steel, alloy steel, and high-performance metal products are widely used across the following industries:
Latest Price List of Gunmetal Pipe and Tube
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Gunmetal | 3 mm | $5.50 – $6.00 | ₹455 – ₹490 |
| Gunmetal | 6 mm | $5.75 – $6.25 | ₹480 – ₹515 |
| Gunmetal | 10 mm | $6.00 – $6.50 | ₹490 – ₹525 |
Note: Prices are indicative and may vary based on size, quantity, raw material cost, and delivery location. Contact us for the latest quotation for Gunmetal Pipe and Tube.
MOQ & Payment Terms
Minimum Order Quantity: 25–100 Kg depending on part size and grade.
Payment Terms: Depending On Grade and Quantity Size
Export Packaging & Shipping
- Seaworthy, fumigated wooden crates with waterproof inner lining
- Palletised packing with clear shipping marks and heat number identification
- Container stuffing supervision with loading photographs available on request
We Exported to 50+ Countries Worldwide
| Global Export Destinations | |||||
|---|---|---|---|---|---|
| United States | Canada | Mexico | United Kingdom | Germany | Netherlands |
| Italy | Spain | South Africa | Australia | India | Korea |
| United Arab Emirates | Saudi Arabia | Qatar | Kuwait | Oman | Bahrain |
| Singapore | Malaysia | Indonesia | Dubai | Riyadh | Dammam |
Our Certifications
We are a certified manufacturer and exporter, committed to strict quality control and international compliance standards. Below are our key certifications.
GST Registered
ISO 9001:2015
ISO 1002:2018
Udyam MSME Registration
Testing Process & Quality Assurance – Ragnar Metals & Tubes
At Ragnar Metals & Tubes, our testing process ensures the safety, reliability, and performance of stainless steel and alloy steel products supplied for global industrial and infrastructure projects. Each batch is verified from raw material selection to final dispatch under internationally recognized standards including ASTM, ASME, ISO, DIN, and EN.
Detects internal flaws using high-frequency sound waves
Measures yield strength, elongation, and material durability
Evaluates toughness under low-temperature and high-stress conditions
Ensures smoothness, coating quality, and visual compliance
Enhances hardness, strength, and corrosion resistance
Measures resistance to deformation and wear
Documentation & Global Compliance
- ✔ EN 10204 3.1 / 3.2 Mill Test Certificates (MTC)
- ✔ Batch-wise quality traceability and inspection records
- ✔ Third-party inspection by SGS, TUV, Bureau Veritas & Lloyd’s
- ✔ Export documentation support for customs and international shipping
Supporting supply for oil & gas, petrochemical, power generation, marine, infrastructure, and heavy engineering industries worldwide.
Related Products
Explore our full range of stainless steel and alloy steel products including pipes, tubes, fittings, flanges, sheets, plates, spools, fasteners, round bars, and special grades manufactured for industrial, infrastructure, and global export applications.
People Also Search For
- Bronze Pipe and Tube
- Brass Pipe and Tube
- Stainless Steel Pipe and Tube
- Aluminum Pipe and Tube
- Copper Pipe and Tube
Frequently Asked Questions
About Ragnar Metals & Tubes
- ✔ Leading manufacturer, stockist, and exporter of stainless steel and alloy steel products for industrial and infrastructure projects
- ✔ ISO 9001:2015 certified quality management system ensuring consistent product reliability and compliance
- ✔ Specialized in precision pipes, tubes, fittings, flanges, sheets, plates, fasteners, and round bars
- ✔ Modern processing and testing facilities with advanced manufacturing and inspection equipment
- ✔ Custom-engineered solutions based on client drawings and technical specifications
- ✔ Full material traceability with EN 10204 3.1 / 3.2 mill test certification
- ✔ Compliance with ASTM, ASME, DIN, EN, and ISO international standards
- ✔ Trusted global supplier supporting oil & gas, petrochemical, power, marine, and heavy engineering industries