Total 653 all-welded ball valves have been delivered in 2009 for ground works in A block of contract area in Bagtiyarlyk, Turkmenistan, of which quality and performance is highly praised by the users. In addition, over 800 heavy caliber all-welded ball valves has been supplied to Puguang in West-east natural gas transmission line 1, 2, 3 and Shanxi-Beijing communication line (See Table of Operating Performance) in domestic market; in overseas market, 156 56" ball valves has been sold, whose running conditions are great; there are plenty of operating performance by executing agency of Cameron all-welded ball valve and Ledeen gas-liquid linkage and commendatory letters from users reflecting that they enjoy great performance with over 30-year failure-free operation on numerous large pipelines all over the world. At present, the longest operating performance of ball valves in use is over 60 years while over 40 years in China.

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