c71500 pipe specifications
| Specification | Details |
|---|---|
| Specifications | ASTM / ASME SB 111 / 151 / 466 |
| Standard | ASTM, ASME and API |
| Size | 1/2" TO 6" IN OD & NB IN Various SWG & SCH |
| Outer Diameter | 4.00 to 22.00 mm |
| Wall Thickness | Between 0.15mm and 1.50 mm |
| Length | Single Random, Double Random & Required Length |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Types | Seamless / ERW / Welded / EFW / Fabricated / CDW |
| Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes |
| End | Plain End, Beveled End, Threaded |
| Grades | Copper Nickel 90/10 (C70600), Cupro Nickel 70/30 (C71500) |

c71500 chemical composition (ASTM B111)
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | 29.0 – 33.0 |
| Iron (Fe) | 0.4 – 1.0 |
| Manganese (Mn) | Max 1.0 |
| Carbon (C) | Max 0.05 |
| Lead (Pb) | Max 0.02 |
| Sulfur (S) | Max 0.02 |
| Phosphorus (P) | Max 0.02 |
| Zinc (Zn) | Max 0.50 |
| Others | Max 0.50 |
| Copper (Cu) | Balance |
c71500 mechanical properties
| Standard Temper | Former Temper | Copper Alloy UNS Nos. | Tensile Strength min (ksi) | Tensile Strength min (MPa) | Yield Strength min (ksi) | Yield Strength min (MPa) | Rockwell Hardness 30T |
|---|---|---|---|---|---|---|---|
| OS025 | Nominal Grain Size 0.025 mm | C71500 | 60 | 414 | 25 | 172 | 46 |
| OS035 | Nominal Grain Size 0.035 mm | C71500 | 54 | 372 | - | - | 40 |
c71500 pipe applications
Power industry
Cement industry
Oil & gas
Chemical plants
Petrochemical plants
Pharmaceuticals
Valves and pump components
Quality certifications
ISO certified
EN 10204 3.1 Certificate
Third party inspection available
100% meets the standard
Strict quality tests before dispatch
FAQ
Q1: What types of C71500 pipes are available?
Seamless, ERW, welded, EFW, fabricated, and CDW pipes are available. Forms include round, square, rectangular, coiled, U-shape, pan cake coils, and hydraulic tubes. Ends can be plain, beveled, or threaded. Schedules range from SCH20 to XXS.
Q2: What is the difference between OS025 and OS035 temper for C71500 pipe?
OS025 has higher strength (60 ksi tensile, 25 ksi yield) with hardness 46 HRT. OS035 is softer (54 ksi tensile) with hardness 40 HRT. OS035 is fully annealed – best for bending and tube expansion. OS025 is light drawn – suitable for straight pipe runs requiring some strength.
Q3: What is the chemical composition of C71500 pipe?
C71500 contains Ni 29-33%, Fe 0.4-1.0%, Mn max 1.0%, C max 0.05%, Pb max 0.02%, S max 0.02%, P max 0.02%, Zn max 0.50%, Cu balance. This composition provides high resistance to stress corrosion cracking.
Q4: What sizes are available for C71500 pipe?
Outer diameter from 4.00 to 22.00 mm, wall thickness from 0.15mm to 1.50 mm. Size range from 1/2" to 6" in OD. Length can be single random, double random, or required length.
Q5: What standards cover C71500 pipe?
ASTM / ASME SB 111 / 151 / 466. ASTM B111 covers seamless condenser tubes. ASTM B151 covers rod and bar. ASTM B466 covers seamless pipe and tube. API standards also available.
Q6: Does GNEE provide third party inspection for C71500 pipe?
Yes, third party inspection is available. The page states: "We provide final inspection by third parties for assured quality of custom UNS C71500 pipe." EN 10204 3.1 certificates are also available.
Q7: What industries use C71500 pipe?
Power industry, cement industry, oil & gas, chemical plants, petrochemical plants, pharmaceuticals, and valves and pump components. The page lists these as key application industries.
Q8: What forms of C71500 pipe are available?
Round, square, rectangular, coiled, U-shape, pan cake coils, and hydraulic tubes. This variety allows C71500 pipe to be used in diverse applications from simple piping to complex hydraulic systems.
Q9: Is C71500 easy to machine and weld?
Yes, C71500 is easy to machine and weld. The page lists "Easy to machine and welded" as a key feature. This makes C71500 suitable for fabricating complex valve and pump components.
Q10: What is the maximum schedule available for C71500 pipe?
Up to XXS (double extra strong). Schedules include SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, and XXS. Higher schedules provide thicker walls for higher pressure applications.
Quality Control for C71500 Copper Pipe
Quality assurance: All materials go through strict quality tests before dispatch. Final inspection by third parties available for assured quality.
Chemical verification: Per ASTM B111 C71500 requirements: Ni 29-33%, Fe 0.4-1.0%, Mn max 1.0%, C max 0.05%, Pb max 0.02%, S max 0.02%, P max 0.02%, Zn max 0.50%, Cu balance.
Mechanical testing: Tensile and hardness tested per temper: OS025 (60 ksi tensile, 25 ksi yield, 46 HRT), OS035 (54 ksi tensile, 40 HRT).
Dimensional inspection: OD, wall thickness, length checked per ASTM B466 / B111 tolerances.
Certification: EN 10204 3.1 Certificate available. ISO certified.
Traceability: All test reports linked to heat numbers.

Packaging for C71500 Copper Pipe
Bundling: Pipes are formed into bundles with steel straps. Plywood separators between layers prevent surface scratching.
End protection: Plastic caps on both ends keep debris out and protect beveled or threaded ends.
Cut length packaging: Shorter lengths packed into wooden crates.
Labels: Alloy (C71500 / 70/30), heat number, OD × wall thickness, length, quantity, PO number, net weight, gross weight.

Factory Equipment for C71500 Copper Pipe
| Equipment | Purpose |
|---|---|
| Induction melting furnace | Precise control of Ni 29-33%, Fe 0.4-1.0%, Cu balance |
| Continuous caster | Produces billet for pipe extrusion |
| Extrusion press | Forms hollow pipe shell |
| Cold pilger mill | Reduces OD and wall thickness |
| Draw bench | Final sizing, straightening |
| Annealing furnace | Produces OS025 or OS035 temper |
| ERW pipe mill | For welded pipe production |
| U-bend bender | Forms U-shape pipes |
| Eddy current tester | Non-destructive testing |
| Hydrostatic tester | Leak testing |
| Metallurgical lab | Composition and mechanical verification |





