Lock the material identity
Write the UNS or EN grade and product standard on the enquiry.
Manufactured in Gujarat · India-wide supply · Export enquiries
Identify C71500 or the weldable grade, construction, wall system and inspection scope before requesting price.

Specification-led brass supply
Copper-nickel 70/30 commonly refers to UNS C71500, with nickel, iron and manganese controlled for demanding seawater and heat-transfer duties.
C71520 may be specified for welded construction. The grade, construction and governing product standard must appear together on the drawing and purchase order.
A clearer route to purchase
Write the UNS or EN grade and product standard on the enquiry.
State OD or nominal size, wall, length, tolerances and form.
Identify MTC, examination, marking and inspection before quotation.
Use the 3D builder to organise the product and purchasing data.
Technical specification
Use this summary to prepare the enquiry. The accepted quotation, purchase specification and current governing-standard edition control the order.
Published ranges are enquiry references, not a live-stock promise. Confirm each size, temper, test and document in the supplier’s written quotation.
3D product configuration
Open the builder with Copper-Nickel 70/30 Pipes and Tubes selected. Add dimensions, condition, quantity and destination, then include the governing standard, required tests and documentation in the RFQ.
Alloy, standard, edition and intended service.
Dimensions, tolerance, temper, form and finish.
Tests, MTC, inspection, packing and destination.
Selection by duty
Material and wall class matched to pressure, velocity and project requirements.
ASTM B111 dimensions, temper and examination stated for heat-transfer service.
Water conditions and fabrication details reviewed before alloy confirmation.
Pipe, fittings, flanges and joining procedure specified as an approved system.
Application examples do not establish fitness for service. Confirm medium, composition, velocity, temperature, pressure, fabrication, environment and governing code with the responsible engineer.
India and export enquiries
We review enquiries from major Indian cities and international industrial markets. Geographic coverage does not imply local inventory, office presence or certification.
Commercial and technical supply enquiries are reviewed by grade, standard, quantity, destination and delivery term.
Commercial and technical supply enquiries are reviewed by grade, standard, quantity, destination and delivery term.
Commercial and technical supply enquiries are reviewed by grade, standard, quantity, destination and delivery term.
Commercial and technical supply enquiries are reviewed by grade, standard, quantity, destination and delivery term.
Cu-Ni 70/30 and C71500 tube
Identify UNS C71500 or Cu-Ni 70/30, the governing tube standard, dimensions, condition and required material certification.
For condenser and heat-exchanger duty, provide tube-sheet data, length, tolerances, end condition and test requirements.
State the design code, seawater conditions, pressure, temperature, pipe or tube dimensions and fabrication scope.
Do not substitute 70/30 and 90/10 copper-nickel grades by name alone; the system designer must select the alloy for the operating environment.
Quality and order definition
State certificate type, test method, sampling or 100% examination, marking, inspection hold points and acceptance criteria before order placement.
View quality and testing capabilities →MaterialGrade, standard and edition
DimensionsSize, tolerance and length
ConditionTemper, form, finish and ends
EvidenceMTC, testing and inspection
DeliveryQuantity, packing and destination
Before requesting a quotation
UNS C71500 is commonly called copper-nickel 70/30, CuNi30Mn1Fe or CW354H.
C71520 is a weldable copper-nickel grade used for applicable welded product. Do not substitute it for C71500 without approval.
ASTM B466 covers applicable seamless pipe, B467 welded pipe and B111 condenser or heat-exchanger tube.
Published supply references extend from about 10.3 to 610 mm OD and 1.24 to 25 mm wall; actual combinations depend on construction, standard, quantity and tooling.
Related copper-nickel products
Copper-Nickel 70/30 Pipes and Tubes enquiry
Send grade, standard and edition, dimensions, temper, quantity, tests, inspection and destination.
Manufacturing, testing, certification and delivery scope is confirmed in writing before order acceptance.