ZA751812B
(en )
1976-02-25
A process and device for the manufacture of double-walled plastics pipes with their external wall provided with annular or helical grooves
HU175372B
(hu )
1980-07-28
Sposob i oborudovanie dlja izgotovlenija plastmassovykh trubok s sdvoennoj stenkoj i kol'cevidnymi ili vintoobraznymi rebrami na naruzhnoj stenke
YU201477A
(en )
1982-08-31
Method of producing double-wall plastic tubes
CA1019579A
(en )
1977-10-25
Plastics drain pipe and apparatus for producing the same
IL47325A0
(en )
1975-07-28
Process and apparatus for the continuous overlap welding of plastic sheets or panels
CA985099A
(en )
1976-03-09
Method and apparatus for the production of helical seam pipe
ZA724669B
(en )
1973-03-28
Method and apparatus for producing synthetic plastic material containing a transverse internal parting wall
GB1523786A
(en )
1978-09-06
Method of and apparatus for manufacturing a resin tube having thick and thin wall portions alternating along its length
GB1520644A
(en )
1978-08-09
Insulated pipe product and method of manufacture thereof
BG28835A3
(en )
1980-07-15
Method and apparatus for holes making in corrugated plastic pipe
ZA757500B
(en )
1976-11-24
Method and apparatus for the manufacture of rods,tubes,profiled sections and the like
BG27885A3
(en )
1980-01-15
Method and apparatus for production of two-wall plastic pipes with outside corrugated wall
GB1478231A
(en )
1977-06-29
Process and apparatus for the manufacture of tubular fibrous products
CA1035206A
(en )
1978-07-25
Method for preparation of cylindrical corrugated article and apparatus relevant thereto
ZA757365B
(en )
1976-11-24
Process and apparatus for the manufacture of a plastics tube
JPS53105563A
(en )
1978-09-13
Process and apparatus for production of multilayer straight plastic pipe having many wall thickness ratio
CA1028809A
(en )
1978-04-04
Method and apparatus for producing plastic tubes with internal rib
JPS5321276A
(en )
1978-02-27
Process and apparatus for molding joints of plastic pipes
AU8122075A
(en )
1976-11-18
A process and device for the production of blown plastic films
GB1476071A
(en )
1977-06-10
Method of and apparatus for manufacturing a heat insulating pipe
AU490759B1
(en )
1975-08-28
Method and apparatus for progressively constructing a wall of cementitious material
ZA753552B
(en )
1976-04-28
A method of manufacture by extrusion of sections of structural foamed thermoplastics
ZA751352B
(en )
1976-02-25
Process and apparatus for the production of sheet materialhaving corrugations therein
AU8191175A
(en )
1976-12-09
Method and apparatus for forming corrugated pipe
AU494987B2
(en )
1977-06-02
Process and apparatus for manufacture of plastic tube