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?????, ??????????? ?????? ???? ????? ????? ????? ?????: ???
??? ???: ???? ???, ??????????, ?????, ????, ??????: 150MPa ?? ?? ????.
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???? ???: ??? ???, ??? ????, ????, ?????? 150MPa ? ??? ????.
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??? ?????? ??????? ????? ?? ?????????? ???????? ???? ?????? ???? ????? ????. ???? ??, ???????? ??, ?????? ?????????, ????? ???????? ???????? ???? ??????? ???????? ?? ?????? ???? ????? ?????.