This standard specifies the classification and marking, requirements, test methods, inspection rules and markings of ship ladder safety hoops (hereinafter referred to as safety hoops). This standard applies to the design, manufacture and acceptance of safety hoops installed on ships to protect personnel going up and down vertical ladders.
GB/T 8923.1-2011 Preparation of steel substrates before application of paints and related products.Visual assessment of surface cleanliness.Part 1:Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coa