Occupational safety standards system. Machines and equipment for oil transportation. Safety requirements 
             
            
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              Crown-blocks, travelling blocks und hook blocks. Basic parameters 
             
            
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              Breathing vents for oil product tanks 
             
            
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              Hatch covers of tank for petroleum products. Types, main parameters and dimensions 
             
            
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              Flanges of vessels and devices. Thermal expanded graphite gaskets on metal toothed base. Design and dimensions. Technical requirements 
             
            
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              Flanges of vessels and devices. Thermally expanded graphite gaskets on wave metallic base. Design and dimensions. Technical requirements 
             
            
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              Flanges for vessels and apparatus. Types and parameters 
             
            
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              Flanges of vessels and apparatuses steel flat welded. Design and dimensions 
             
            
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              Welded butt welded steel flanges of vessels and apparatuses. Design and dimensions 
             
            
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              Flanges of vessels and apparatuses steel welded butt welded under the lining of octagonal section. Design and dimensions 
             
            
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              Flanges for vessels and apparatus. Technical Requirements 
             
            
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              Flanges for vessels and devices. Gaskets of non-metallic materials. Design and dimensions. Technical requirements 
             
            
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