MANAGING METHOD FOR MEDIUM LIQUID OF WATER PRESSURE TEST DEVICE FOR SURFACE TREATED STEEL PIPE

PURPOSE:To provide a managing method for medium liquid in which the medi um liquid is exchanged not frequently and oil does not adhere on the steel pipe surface even in the case of mixing of operation oil for water pressure test device with the medium liquid for water pressure test. CONSTITUTION:For...

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Bibliographische Detailangaben
Hauptverfasser:	HIRAI TAKAFUMI, TANAKA SHOZO, TANIWAKI TATSUSHIGE
Format:	Patent
Sprache:	eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a managing method for medium liquid in which the medi um liquid is exchanged not frequently and oil does not adhere on the steel pipe surface even in the case of mixing of operation oil for water pressure test device with the medium liquid for water pressure test. CONSTITUTION:For the operational oil for water pressure test device for surface treatment steel pipe 5, a water-glycol type oil pressure operational oil is used and mixing limit of the water-glycol type oil pressure operational oil mixed in the medium liquid used for washing and water pressure test of the surface treatment steel pipe 5 is set below 5%.