Products Description
JIS H 3300:2018 specifies wrought copper and copper alloy seamless pipes and tubes (hereafter referred to as "tubes"), having a round cross section
C7060T copper-nickel alloy is primarily used for seawater service as forged and machined valve and pump components, fittings and hardware. This alloy is also used in applications requiring high corrosion resistance and where chloride stress-corrosion cracking precaution prevents usage of stainless steels.
Copper-nickel alloys have excellent resistance to biofouling and marine corrosion and possess good fabricability. Copper gains more strength and corrosion resistance when nickel is added to it.
UNS C70600 is one type of copper-nickel alloy, which has excellent corrosion resistance even in marine environments. This alloy possesses average high strength and good creep resistance at high temperatures and costs more in comparison to copper-aluminum alloys and other alloys with similar mechanical properties.
JIS H3300 C7060T Tube composition
| Mn(%) | Pb(%) | Fe(%) | Ni(%) | Zn(%) | Cu(%) |
|---|---|---|---|---|---|
| 0.2-1.0 | ≦0.05 | 1.0-1.8 | 9.0-11.0 | ≦1.0 | ≧85 |
JIS H3300 C7060T Tube Equivalent Grade
| Steel Type | Standard | Country Code | Si(%) | Mn(%) | Pb(%) | S(%) | Fe(%) | Ni(%) |
|---|---|---|---|---|---|---|---|---|
C7060T |
5127 | CNS | 0.2-1.0 | ≦0.05 | 1.0-1.8 | 9.0-11.0 | ||
BFe 10-1-1 |
5234 | GB | ≦0.15 | 0.5-1.0 | ≦0.02 | ≦0.01 | 1.0-1.5 | 9.0-11.0 |
C7060T |
H3300 | JIS | 0.2-1.0 | ≦0.05 | 1.0-1.8 | 9.0-11.0 | ||
C70600 |
B111 | ASTM | ≦1.0 | ≦0.05 | 1.0-1.8 | 9.0-11.0 | ||
CuNi10Fe1Mn |
17660 | DIN | 0.5-1.0 | ≦0.03 | 1.0-2.0 | 9.0-11.0 |





about us
GNEE is a leading manufacturer and global supplier of high-quality, precision-engineered copper products. We specialize in providing a comprehensive range of copper solutions tailored to meet the rigorous demands of various industries worldwide, including HVAC/R, automotive, construction, electrical engineering, and industrial machinery.
Our Extensive Product Portfolio:
Copper Tubes & Pipes:
We supply a full spectrum of copper tubes, including Round Pipes, Square Pipes, Welded Pipes, Seamless Pipes, Heat Exchanger Tubes, and Condenser Tubes, designed for superior thermal conductivity and corrosion resistance.
Copper Sheets & Plates:
Our flat-rolled products range from delicate Copper Foils and Thin Sheets to heavy-duty Plates and Circles (Round Plates), ideal for fabrication, roofing, and electrical applications.
Copper Bars & Rods:
We offer Copper Bars in various profiles such as Round Bars, Square Bars, and Hexagonal Bars, providing excellent machinability and strength for precision parts.
Copper Wires & Strips:
Our product line also includes high-conductivity Copper Wires and finely manufactured Copper Strips, essential for electrical components and connectors.
All our products are manufactured to international quality standards, with a strong focus on common American grades and ASTM specifications to ensure global compatibility and performance. Our key materials include:
C11000 (Electrolytic Tough Pitch - ETP Copper)
C10200 (Oxygen-Free Copper - OFC)
C12200 (Phosphorus Deoxidized Copper, DHP)
C10100 (Oxygen-Free Electronic Copper - OFE)
C26000 (Cartridge Brass, 70/30)
C27200 (Brass, 65/35)
C44300, C68700 (Admiralty Brass)
C70600 (Copper Nickel, 90/10)
C71500 (Copper Nickel, 70/30)
These materials conform to critical standards such as ASTM B111 (Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock), ASTM B68 (Seamless Copper Tube), ASTM B75 (Seamless Copper Tube), ASTM B88 (Seamless Copper Water Tube), ASTM B152 (Copper Sheet, Plate, Strip, and Rolled Bar), ASTM B187 (Copper Bus Bar, Rod, and Shapes), and ASTM B601 (Temper Designations for Copper and Copper Alloys).




