in recent years, the domestic pump valve industry has been developing very rapidly, but there are still many problems
in recent years, the domestic pump valve industry has been developing very rapidly, but there are still many problems in its industry. many of the key valves with high parameters are also dependent on imports. in the process of welding, the german ksb company has widely adopted special welding powder for non-cobalt welding in order to meet the requirements of the sealing materials of the nuclear class valve. french blue valves will be preheating before welding, automatic welding, welding processing on the same equipment or the same processing production line, no matter before welding, welding, welding in the post-processing, can realize automatic temperature control, ensure the welding quality.
and behind the valve welding technology, the domestic some still uses the old welding method, welding technology level is low, welding materials and common materials, short of special valve design requirements. many enterprises are engaged in production and marketing all day long.
france, bernard electric device company 2005 annual sales of 300 million yuan, exports accounted for 70% of sales, the establishment of a global sales network, metallurgy, paper making, water treatment in our country and a lot of oil and gas pipeline valve adopted the denso products of the company.