Product Name: PPR Male Thread Coupling
Sizes (mm): 20x1/2", 20x3/4",25x1/2"25x3/4"
32x1/2", 32x3/4", 32x1", 40x1 1/4", 50x1 1/2",63x2"
Materials: PPR-polyprofylene
Staindard: ENISO1584, DIN8077, DIN8078, ISI15801:2008, AS TMD2447
https://www.hbsinostar.com/pipe-fittings/ppr-pipe-fittings/ppr-male-thread-coupling.html