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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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 Kobe Steel LtdfiledCriticalKobe Steel Ltd
Priority to JP3195077ApriorityCriticalpatent/JPS53116246A/en
Publication of JPS53116246ApublicationCriticalpatent/JPS53116246A/en
PURPOSE: To decrease the joint shifting of pipe butting part by the prop of extension pressurizing apparatus, inserted inside of pipe butting part and automatically carrying out tack welding from the outer circumference of pipe at the time of letting the detecting quantity of joint shifting detector within the limits of a fixed allowance.
COPYRIGHT: (C)1978,JPO&Japio
JP3195077A1977-03-221977-03-22Tack butt welding method for steel pipe
PendingJPS53116246A
(en)