This document stipulates the basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality commitment of heat-resistant stainless steel seamless steel pipes for blast furnace coal injection guns. This document is applicable to heat-resistant stainless steel seamless steel pipes (hereinafter referred to as "steel pipes") for blast furnace coal injection guns with an outer diameter of 18 mm to 57 mm and a wall thickness of 2.0 mm to 8.0 mm, which are cold drawn, cold rolled or rolled-drawn. .
T/ZZB 3165-2023 history
2023T/ZZB 3165-2023 Heat-resisting seamless stainless steel tubes for blast furnace