พลาสติก
เอกสารมาตรฐาน
ญี่ปุ่น
JSA
JIS K 7039:1998
Plastics piping systems -- Glass-reinforced thermosetting plastics (GRP) pipes -- Determination of the long-term ultimate bending strain and calculation of the long-term ultimate relative ring deflection, both under wet conditions
1998
9
Offline
This Japanese Industrial Standard specifies a method for determining by extrapolation the long-term ultimate bending strain and the calculation of the long-term ultimate relative ring deflection of glass-reinforced thermosetting plastics (GRP) pipes under wet conditions. Two methods of loading are given, depending upon the use of plates or beam bars.