Safety engineering requirements of design, construction, manufacture Applying scopes: This standard has been applied for: Pressure vessels have working pressure which larger than KG/cm2 Tanks, cylinders used for containing, transporting, LPG, or substances, which have working pressure larger than or liquid, powder or solid substances without pressure but when discard having pressure larger than KG/cm2. Bottle used for containing, transporting LPG, dissolved gases which have working pressure larger than KG/cm2