7, 500 g sees fit and use load imposed survey supreme vickers hardness value should be 310 HV. 。 8, the shortcoming problem for all maintenance should see fit to use at first to test to determine the same shortcoming problem NDE method, and according to the same standard testing. 3, hammer belt wheel shall be fitted with U - Type of plywood, and can not be J - Screw type splint. 2, all above ground installation, operation platform, or other facilitate contact position 2100 mm or higher office Industrial Valves should be able to let a person hammer belt wheels to the office. 6, for maintenance requirements on casting hardness, due to run out crossing joint, heat affected zone and the subtle hardness traverse the parent metal. 4 and plug valves for casting welding repair should be on producing complete before heat treatment. 5, welding repair or maintenance of joint must be Marine valve in whatever the alleviation of metal stress before the heat treatment process to finish. 10, the depth to be object thickness more than one hundred percent of the country's 20 shortcoming problem, can't repair. 9, before welding, should use appropriate tools aiming for the position of the weld shall thoroughly, remove the mud or metal chips. 2, all welding covers the maintenance of joint shall be deemed appropriate and using low hydrogen welding process. 1, be sure to use appropriate ASME standard section IX of the welders and welding technology. Plug valve repair: all right and use the welding operation of repair and maintenance of welding. 4, the valve should be installed can be adapted to the vertical position, can also horizontal position. Q: what about plug valve installation and maintenance: answer: a, plug valve installation: 1, the heavy site allowed, plug valves should try our best to keep close to the datum. 3, welding shall be in accordance with the maintenance by licensing technology, demand for main joint repair is agreed to by someone. Notes to the order: The national standard) A, A: B: product name, model, nominal size medium and temperature, pressure range C: whether there is attachment, delivery time, and special requirements so that we can correct selection for you. Second, if the Industrial Valves has been selected by design unit of our company model, please order according to the valves parameters directly with our sales center. Three, it is very important when you use the occasion or the environment is more complex, would you please provide design drawings and detailed parameters, our engineers experts will concentrate on review and analysis for you. We can provide you with professional solutions, including design, customization, complete, operation and service. We've been working on the valve leader in the field of industry, to provide you with the latest knowledge of the Industrial Valves, the best service, best technical adviser. Thank you for visiting our website, if you have any questions, you can call us, we will be dedicated to provide you with quality services. The factory provides professional ball valve, butterfly valve, gate valve, globe valve, check valve, relief valve, safety valve, Marine valve, oil valve, hydraulic control valve and other kinds of valves.
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