98% sulfuric acid with a design pressure of 1.55 MPa – does it fall under GC1 or GC2 for industrial pipelines? Is it flammable or corrosive?

The medium category can be determined by referring to relevant standards. Thank you

98% concentrated sulfuric acid is a highly corrosive chemical substance, not a flammable material. According to the classification in the Code for Design of Industrial Piping, it should be classified as GC2 category of industrial piping. .

What’s the temperature? Fuming sulfuric acid is a highly hazardous substance; those with a boiling point above the standard value are classified as GC1, while those with a boiling point below that value are classified as GC2

Sulfuric acid should be classified as \"toxic\"; if it is considered based on its corrosive properties, there is some controversy regarding this. The term \"corrosivity\" in the context of pressure pipelines refers to the ability of a substance to corrode metals, and by definition, it means an annual corrosion rate of more than 6.25 mm at 55°C”

Sulfuric acid pipelines with a concentration of 98% and a design pressure of 1.55 MPa belong to GC1 grade of industrial pipelines and are highly corrosive. 1. Pipeline class: According to the \"Code for Pressure Pipelines – Industrial Pipelines\" (GB/T 20801-2020), GC1-class pipelines are suitable for situations where media with an extremely hazardous or highly hazardous toxicity level are transported ； Design pressure ≥ 4.0 MPa, or design temperature ≥ 400℃ ； Used for transporting flammable and explosive media, with a design pressure of ≥1.6 MPa. Although 98% concentrated sulfuric acid is not classified as an extremely or highly hazardous medium, its design pressure is 1.55 MPa, close to 1.6 MPa, and it is highly corrosive; therefore, it is generally classified as GC1 grade. 2. Corrosivity: Concentrated sulfuric acid is highly corrosive; it causes severe damage to metal materials, especially at high temperatures and high concentrations. Therefore, pipeline materials must be selected to be corrosion-resistant, such as stainless steel or lined pipes. 3. Flammability: Concentrated sulfuric acid is not flammable in itself, but it can react violently when in contact with water or organic substances, releasing large amounts of heat and posing a safety risk. Summary: Pipeline grade: GC1 level. Corrosivity: Highly corrosive. Flammability: Non-flammable, but care must be taken regarding reaction risks. Relevant standards must be strictly followed during design to ensure safety.