# Welded for furniture: round, square, rectangular in steel, aluminium, stainless steel

# Welded for gas:

Iso Medium: black, galvanized, blue
Iso Forte: black, galvanized
Iso II: black, galvanized

# Seamless: Iso Medium DIN 2440 and Iso Forte DIN 2441: black and galvanized

# Seamless for heating: DIN 2448 class C, ST 33

# Copper Sanco: naked and pvc coated tubes

# Pex-alu-pex