Thermosetting plastic tubes made of unsaturated polyester resins for use in manufacture; flexible fiberglass pipes and tubes; fiberglass ball socket joints for pipes; fiberglass couplings for pipes; fiberglass reinforcing materials for pipes and pipe fittings; fiberglass pipe fittings, fixed flanges and loose flanges; rubber, namely, o-rings of rubber for use as fiberglass pipe connection seals; insulating material, namely, insulating fiberglass casing and screen for water wells