FIELD: mechanical engineering. SUBSTANCE: panels are built in wall of pipe-envelope in concentric layers located between intermediate foam plastic layer and outer and inner glass-reinforced plastic layers bonded by means of an adhesive. Panels are built at angles of symmetrical wrap of their lateral surfaces relative to horizontal plane of symmetry equal to 35-75 deg. Panels are made from laminated molded plastic on base of glass, basalt or organic fabric or combination of them. EFFECT: enhanced reliability. 3 dwg
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Authors
Dates
1998-07-10—Published
1996-06-20—Filed