Gunmetal Flanges
ISO 9001:2015Certified Quality
MTC EN 10204 3.1Mill Certified
100% PMI TestedXRF Analyzed
ASTM / ASMEGlobal Standards
Product Details & Specs
Gunmetal Flanges
J K Pipefit manufactures high-quality Gunmetal (Bronze) flanges that offer excellent corrosion resistance, especially in seawater and brackish water environments. Gunmetal flanges are widely used in marine applications, valve manufacturing, pump connections, and hydraulic systems. Our Gunmetal flanges are precision cast and machined to meet international standards.
Key Specifications
- Sizes: 1/2" - 24" (DN15 - DN600)
- Pressure Class: 150# - 600#
- Facing: RF, FF
- Composition: 88% Cu, 10% Sn, 2% Zn
Technical Specification Table
Gunmetal (Leaded Bronze) Chemical & Mechanical Standards
Standard dimension and weight charts for engineering calculations and procurement sizing.
| Standard / Grade | Copper (Cu %) | Tin (Sn %) | Zinc (Zn %) | Lead (Pb %) | Tensile Strength (MPa) |
|---|---|---|---|---|---|
| BS 1400 LG2 | 84.0 - 86.0% | 4.0 - 6.0% | 4.0 - 6.0% | 4.0 - 6.0% | 200 MPa min |
| ASTM B584 C83600 | 85.0% | 5.0% | 5.0% | 5.0% | 235 MPa min |
| EN 1982 CC491K | 83.0 - 87.0% | 4.0 - 6.0% | 4.0 - 6.0% | 4.0 - 6.0% | 200 MPa min |
| Admiralty Gunmetal (G1) | 86.0 - 89.0% | 9.5 - 10.5% | 1.5 - 2.5% | 0.5% max | 270 MPa min |
* Custom thicknesses, non-standard schedules, and special cuts are available on request.
Available Types
Gunmetal Flanges Types
Weld Neck Flanges
Slip-On Flanges
Blind Flanges
Threaded Flanges
Socket Weld Flanges
Lap Joint Flanges
Companion Flanges
Valve Flanges
Material Grades
- LG2 (Lead Gunmetal)
- LG1 (Lead Gunmetal)
- G1 (Gunmetal)
- G2 (Gunmetal)
- BS 1400 LG2
- ASTM B584 C83600
- DIN 1705 G-CuSn10Zn
- EN 1982 CC491K
Standards & Specifications
BS 1400ASTM B584DIN 1705EN 1982ASME B16.5BS 4504DIN 2501EN 1092-1
Sizes Available
- 1/2" to 24"
- 150# to 600#
- Custom sizes available
Industries
Applications
Marine Piping Systems
Valve Manufacturing
Pump Connections
Hydraulic Systems
Seawater Applications
Fire Fighting Equipment
Ship Building
Port Infrastructure
Need Gunmetal Flanges with Mill Test Certificates?
Contact our sales desk at CP Tank, Mumbai for competitive wholesale rates, ready stock verification, and custom cut lengths.