This standard is applicable to acid-resistant phenolic plastic flange-type 90° shrimp elbows with an allowable temperature of -30°C to 130°C and an allowable pressure specified in the following table.
HG/T 2129.15-1991 history
1991HG/T 2129.15-1991 Acid-resistant phenolic plastic chemical equipment parts flange type 90° shrimp elbow