2025-08-25 In low-temperature working environments, the physical properties of butt weld pipe fittings need to withstand extreme temperature challenges, which puts forward more stringent requirements for material performance and manufacturing standards. ASTM A420 pipe fittings, as an important product in the low-temperature industrial field, have become the preferred solution for industries such as petrochemicals, natural gas, and refrigeration due to their excellent low-temperature toughness, strict quality control, and extensive material selection.