EG11746A - A process and device for the manufacture of double-walled plastics pipes with their external wall provided with annular or helical grooves - Google Patents

A process and device for the manufacture of double-walled plastics pipes with their external wall provided with annular or helical grooves

Info

Publication number
EG11746A
EG11746A EG14675A EG14675A EG11746A EG 11746 A EG11746 A EG 11746A EG 14675 A EG14675 A EG 14675A EG 14675 A EG14675 A EG 14675A EG 11746 A EG11746 A EG 11746A
Authority
EG
Egypt
Prior art keywords
annular
manufacture
double
external wall
wall provided
Prior art date
Application number
EG14675A
Other languages
English (en)
Inventor
R Hegler
W Hegler
Original Assignee
Hegler Wilhelm
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
Priority claimed from DE2413879A external-priority patent/DE2413879C3/de
Priority claimed from DE2413878A external-priority patent/DE2413878C3/de
Application filed by Hegler Wilhelm filed Critical Hegler Wilhelm
Application granted granted Critical
Publication of EG11746A publication Critical patent/EG11746A/xx

Links

EG14675A 1974-03-22 1975-03-22 A process and device for the manufacture of double-walled plastics pipes with their external wall provided with annular or helical grooves EG11746A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2413879A DE2413879C3 (de) 1974-03-22 1974-03-22 Vorrichtung zur Herstellung eines doppelwandigen Kunststoffrohrs aus einem gewellten Außenrohr und einem glatten Innenrohr
DE2413878A DE2413878C3 (de) 1974-03-22 1974-03-22 Verfahren zum Herstellen eines doppelwandigen Kunststoffrohrs mit gewellter Außen- und glatter Innenwand und Vorrichtung zur Durchführung dieses Verfahrens

Publications (1)

Publication Number Publication Date
EG11746A true EG11746A (en) 1978-12-31

Family

ID=25766857

Family Applications (1)

Application Number Title Priority Date Filing Date
EG14675A EG11746A (en) 1974-03-22 1975-03-22 A process and device for the manufacture of double-walled plastics pipes with their external wall provided with annular or helical grooves

Country Status (9)

Country Link
AR (1) AR207352A1 (fi)
BG (1) BG27885A3 (fi)
BR (1) BR7501741A (fi)
EG (1) EG11746A (fi)
FI (1) FI60990C (fi)
IL (1) IL46892A (fi)
IT (1) IT1034462B (fi)
PL (1) PL100947B1 (fi)
YU (1) YU67975A (fi)

Also Published As

Publication number Publication date
BR7501741A (pt) 1975-12-23
AR207352A1 (es) 1976-09-30
FI60990C (fi) 1982-05-10
AU7943675A (en) 1976-09-30
IL46892A0 (en) 1975-05-22
FI750830A (fi) 1975-09-23
PL100947B1 (pl) 1978-11-30
FI60990B (fi) 1982-01-29
IL46892A (en) 1978-07-31
IT1034462B (it) 1979-09-10
YU67975A (en) 1982-02-28
BG27885A3 (en) 1980-01-15

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