DIN 86088 CuNi 90/10 Tees Manufacturer
Fittings for butt welding into copper-nickel-alloy pipelines – Tees
MATERIALS : Cu-Ni 90/10, Cu-Ni 70/30
DIMENSION : DIN 86088
Type & Construction : SEAMLESS (8 & Below)
SEAM WELDED (10 & Over)
A CuNi 90/10 tee is a three-outlet pipe fitting, shaped like the letter “T,” that splits or combines flow in piping systems. Manufactured from copper-nickel alloy containing roughly 90 % copper and 10 % nickel (UNS C70600), these tees deliver outstanding corrosion resistance against seawater
Chemical composition of Cu Ni 90 10 UNS C70600 Copper Nickel
Alloy No. | Ni% | Fe% | Mn% | C% | Pb% | S% | P% | Zn% | other imp. | Cu% |
UNS C70600 | 9.0-11.0 | 1.0-2.0 | 0.5-1.0 | max 0.05 | max 0.02 | max 0.02 | max 0.02 | max 0.50 | max 0.03 | rem. |
CuNi 90/10 Tee Dimension according to DIN 86088


Inspection and Testing
Throughout the manufacturing process from melting and alloying to the finished product, stringent quality control inspections and tests are carried out to ensure that product quality complies fully with customers requirements. All tests are performed in accordance with the requirements of the relevent specification. In addition, ultrasonic, radiographic, dye-penetrant, eddy current and other tests can be performed.
For Seam-Welded Fittings it is standard practice to perform 100% radiographic inspection on all welds to ASME, SEC, VIII, UW51; DIN54109, Blatt2 or DIN54111, Teil 1.
Certification
All Butt-Welding Fittings are supplied with a certificate listing the test which have been performed in accordance with relevant specifications and/or customer requests