This standard is applicable to acid-resistant phenolic plastic plate-type liquid level gauges with an allowable temperature of -30°C to 130°C and an allowable pressure at normal temperature of less than or equal to 0.2 MPa.
HG/T 2129.10-1991 history
1991HG/T 2129.10-1991 Acid-resistant phenolic plastic chemical equipment parts plate liquid level gauge