Title:
PIPING
Document Type and Number:
Japanese Patent JP2021021451
Kind Code:
A
Abstract:
To provide piping which is excellent in durability, and small in a linear expansion coefficient.SOLUTION: Piping 10 comprises a tubular fiber-reinforced resin layer 11 including resin and fibers 14, and satisfies the following conditions (A) to (C) when setting an alignment angle of a specific fiber out of the fibers to θ1. The condition (A): in an arbitrary region of an outer surface of the fiber-reinforced resin layer, the fibers which are aligned at θ1=45°±25° is 50% or higher with respect to the total number of the fibers included in the region. The condition (B): in an arbitrary region of a center part of the fiber-reinforced resin layer in a thickness direction, the fibers which are aligned at θ1=45°±25° is 50% or higher with respect to the total number of the fibers included in the region. The condition (C): in an arbitrary region of an inner surface of the fiber-reinforced resin layer, the fibers which are aligned at θ1=45°±25° is 50% or higher with respect to the total number of the fibers included in the region.SELECTED DRAWING: Figure 1
Inventors:
NISHIYAMA SHINICHI
KANEHIRA YUTAKA
YAMAGUCHI TAKURO
KANEHIRA YUTAKA
YAMAGUCHI TAKURO
Application Number:
JP2019138822A
Publication Date:
February 18, 2021
Filing Date:
July 29, 2019
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
F16L9/14; B32B1/08; B32B5/02; B32B27/04; B32B27/12; B32B27/32; F16L9/12
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Attorney, Agent or Firm:
Nishizawa Kazumi
Yuichiro Kawagoe
Makiko Otsuki
Hiroshi Yamaguchi
Yuichiro Kawagoe
Makiko Otsuki
Hiroshi Yamaguchi