Hitachi Cable, Inc.

Hajime Abe

Noboru Hagiwara

Kenkichi Yamaji

Kuniaki Seki

Koichi Tamura

Shinichi Nishiyama

Oelhschlagel Dietrich

Kazuo Ishida

Tadao Otani

Manabu Kagawa

Dietrich Oelhschlagel

Osamu Kawamata

Sinichi Nishiyama

A pipe coated with a resin layer on the inner surface and a method for manufacturing the pipe. According to the method, a resin mixture including thermal melting fluoro resin and fluorine elastomer is applied to the inner surface of a pipe member. The resin mixture is thermally treated on the inner surface of the pipe member to form a mesh like pattern so that a resin layer of a predetermined stripping strength is obtained.

Method of manufacturing a pipe coated with a resin layer on the inner

In a pipe coated with a resin layer on the inner surface thereof and a method for manufacturing the same, resin mixture including thermal melting fluoro resin and fluorine elastomer is applied to the inner surface of a pipe member. The resin mixture is thermally treated on the inner surface of the pipe member to be of a mesh like pattern so that a resin layer of a predetermined stripping strength is obtained thereon.

Pipe coated with a resin layer on the inner surface thereof

A method for coating the inner surface of a metal tube with a metal layer consisting of one or more metals, the metal layer having a melting point lower than that of the metal tube, the method comprising;

Method for manufacturing metallic tube members

A method for producing a strip of material having a non-uniform cross section is carried out by passing a strip of material in the longitudinal direction through a first set of working rolls, at least one of which is provided with an annular slot intermediate the ends thereof so that a reducing force is applied only to those portions of the strip engaging said roll on opposite sides of the slot whereby the excess material flows toward that portion of the strip opposed to the slot to cause the strip to buckle outwardly into the slot. The strip is subsequently passed through a set of smooth rolls to flatten the buckled portion. This procedure is repeated any desired number of times with the width of the slot becoming progressively smaller. The strip may then be passed through one or more sets of finishing rolls and a heating and annealing operation can take place before each passage through a set of finishing rolls.

Method of producing a strip having a non-uniform cross section by a

An addition material in powder or particulate form comprising at least one addition agent selected from the group consisting of calcium, magnesium and aluminum is extruded to provide a compact core wire, which is enveloped by a tape of iron or steel. The tape is circularly shaped such that one widthwise marginal portion is folded tightly over the other widthwise marginal portion in overlapping relation. The tape thus shaped serves as a protective covering for the core wire. Great lengths of continuous wire can be manufactured by the continuous production process. The wire shaped composite addition material produced in this way is added to molten iron and steel by means of continuous wire feeding and hereby provides for effective deoxidation and desulfurization of such melts. Furthermore the linear additive is easy to handle and to store.

Method of production of a wire-shaped composite addition material

A method of jointing a copper pipe to an aluminum pipe by soldering, comprising the steps of:

Growing community of inventors

Ibaraki, Japan

Hajime Abe