Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/init.php on line 48 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/init.php on line 48 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/engine.php on line 116 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 102 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 234 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 234 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 238 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 238 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/functions.php on line 106 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 443 Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /var/www/internat/data/www/avtoremontnaya.ru/engine/modules/show.full.php on line 422 Какие стальные двери прочнее ? » Статьи по строительству, ремонту, дизайну, интерьеру. Советы по стройматериалам

Какие стальные двери прочнее ? Двери, перегородки
Автор: admin | 17 апреля 2009 | Просмотров: 1376

Какие стальные двери прочнее ?

Не надо быть большим специалистом по металлоконструкциям, чтобы сразу ответить на данный вопрос. Конечно, сварные прокатанные на станке трубы, соединенные между собой сваркой в определенную конструкцию будут намного, в 2-3 раза, прочнее, чем такого же сечения конструкции из листа металла, согнутого холодным способом в конструкцию, аналогичную предыдущей.

Да, надо отдать должное - гнутые профили - более современная, более дешевая конструкция, чем из прокатанных сварных труб прямоугольного сечения. Но, извините,- это уже проблема изготовителя стальных дверей - сделать конструкцию как можно дешевле. Покупателю важнее качество, в данном случае прочность и надежность конструкции двери.

Поэтому все разговоры о якобы современных технологиях изготовления путем гибки конструкции из листа верны только в том, что такая конструкция обычно дешевле, технологичнее в изготовлении, но зато однозначно более слабее по сравнению со старой конструкцией из сварных прокатанных труб.

Так что покупатель, сравнивая две технологии изготовления стальных дверей, должен знать следующее:

Гнутые профили - это современно, красиво, но в 2-3 раза слабее конструкций из прокатанных сварных труб.

Выбор за клиентом: прочность и надежность или современная технология изготовления, которая для покупателя все равно не будет дешевле.

Уважаемый посетитель, Вы зашли на сайт как незарегистрированный пользователь. Мы рекомендуем Вам зарегистрироваться либо войти на сайт под своим именем.
Другие статьи по теме:
 (голосов: 0)