Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel CorpfiledCriticalKawasaki Steel Corp
Priority to JP4727976ApriorityCriticalpatent/JPS52131212A/en
Publication of JPS52131212ApublicationCriticalpatent/JPS52131212A/en
Non-Disconnectible Joints And Screw-Threaded Joints
(AREA)
Protection Of Pipes Against Damage, Friction, And Corrosion
(AREA)
Abstract
PURPOSE: To make injection of anticorrosive mortar possible after main pipe is excavated and then burried again by providing mortar injection and air vent tube socket on outer pipe to be mounted at welded part of underground main pipe.
COPYRIGHT: (C)1977,JPO&Japio
JP4727976A1976-04-271976-04-27Connecting method of large diameter underground main pipe
PendingJPS52131212A
(en)