أرشيف الوسم: a grade

صفات السفينة الصقيع

بناء السفن الصلب

Ship Sleet qualities The leading steel materials used in steel shipbuilding are Ship Sleet qualities . The entire construction of a ship is made of steel. Steel is the most important raw material of ship manufacturers. All parts of the ships made of steel, from the spine to the outer coating, are made of ship steel. […]

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