This standard is applicable to flange-type right-angle equal-diameter tees made of acid-resistant phenolic plastics with an allowable temperature of -30°C to 130°C and an allowable pressure specified in the following table.
HG/T 2129.19-1991 history
1991HG/T 2129.19-1991 Acid-resistant phenolic plastic chemical equipment parts flange type right angle equal diameter tee