以吻封缄
:我也是管安全的 看你的图片 保险绳连接中软管一端并未固定 看来是不能起到保险作用
(2011-11-03 15:32) 
Safety clamps
The hose manufacturer is required to ensure that safety clamps specifically designed for the hose are available for purchase by the user, and to mark the hose body where such clamps are to be fitted in accordance with the requirements in API Spec 7K. Safety clamps shall be designed to provide one or more attachment points that will allow the user to secure a length of chain or a wire rope sling to the safety clamp. Such attachment points shall incorporate a 28 mm (approximately 1-1/8 in.) minimum diameter hole for attaching a safety chain or wire rope sling and will be so designed as to allow adequate clearance from the hose. The chain or wire rope sling, and the attachment hardware, such as a shackle or connecting link shall have a minimum breaking strength of 72640 N (16,000 lbs), or a working load limit of 3,000 lbs (9600 N) with a 5 to 1 safety factor for hoses up to 4 in. internal diameter. For hoses with 5 in. and 6 in. internal diameter the minimum breaking strength shall be 145280 N (32,000 lbs), or a working load limit of 27240 N (6,000 lbs) with a 5 to 1 safety factor. The chain or wire rope sling shall be used to handle the ends of the hose, and provide a means of restraining the end of the hose if the end fitting becomes disconnected. The free end of the chain or wire rope sling shall be attached to a secure structure or object that is capable of withstanding the breaking force of the chain or wire rope sling, and shall be of a sufficient length without restricting the movement of the hose. The user shall specify the proper safety clamps as specified above to be provided in the purchase agreement for the hose that is being supplied. The hose manufacturer shall include shipment of the proper safety clamp with each hose supplied, and any pertinent installation instructions. Safety clamps provided by the hose manufacturer shall be installed by the user on all rotary, vibrator, and jumper hoses at the locations marked on the hose body. The user shall verify that the safety clamp provided is of the proper size, and is installed in accordance with the hose manufacturer’s instructions as provided.
看看这段是否对你有用。
