پایگاه خبری و اطلاع رسانی شهریـــــاریــــها نخستین پایگاه خبری و اطلاع رسانی در شهرستانهای غرب است.ان تهران حاصل تلاش جمعی از جوانان فعال می‌باشد.که در راستای اهداف سیاست‌های انقلاب اسلامی راه اندازی شده است.. آغاز به کار فعالیت این پایگاه در تاریخ پنجم خرداد ۸ (May, ) میباشد.

شهرستان اسلامشهر با مساحت ۵ کیلومتر یکی از شهرستان‌های است.ان تهران است.. این شهرستان در جنوب غربی است.ان تهران قرار دارد و مرکز آن شهر اسلام‌شهر است.. این شهرستان از شرق و جنوب به ری از غرب به رباط کریم و از شمال غرب به شهریار محدود است. . این شهرستان در سال ۵، ۵۸٬ نفر جمعیت داشت که ٬۸ نفر آن مرد و ٬۸ نفر آن زن می‌باشند.

وسعت شهرستان در حدود ۵ کیلومتر مربع است. و دارای بخش، دهستان و روستا است.. این شهرستان در منطقه دشت آبرفتی جنوب غربی تهران واقع شده و ارتفاع آن از سطح دریا در حدود یا ۵ متر است.. شهرستان، قطارشهری در حال احداث دارد.

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فلنج گلودار همانطور که از اسمش پیداست دارای یک لبه بلند تر نسبت به فلنج اسلیپون است.. فلنج اسلیپون دارای خاصیت نصب آسان تری نسبت به فلنج گلودار می باشد و مقاومت آن در برابر فشار داخلی دو سوم و در برابر تحمل خستگی یک سوم فلنج گلو دار است.. طول عمر فلنج اسلیپون دو سوم فلنج گلودار جوشی است.. فلنج اسلیپون حتما باید به لوله جوش شود. به دلیل روش جوشکاری مورد است.فاده برای ا تصال فلنج های اسلیپون، اغلب هزینه بیشتری را برای کارفرما ایجاد می کنند و علی رغم قیمت پایین تر نسبت به فلنج گلودار است.قبال کمتری از این نوع صورت می گیرد.

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