GB / T4213-2008 pneumatic control valve GB7512-2006 liquefied petroleum gas cylinders GB / T8464-2008 GB10877-1989 plumbing connection valve with internal thread GB10879-2009 oxygen cylinders acetylene cylinder valve GB / T12232-2005 General valve flange connection iron gate GB / T12233-2006 General valve iron globe valves and lift check valves according to the connection method (1) Threaded valve: with internal or external thread valves, and pipe thread connecting .. (2 ) flanged valves: Body with flange Taiwan Toyama Valve Co., Ltd., is connected with the pipe flange. (3) welding connection valve: Body with welding groove connected to pipe welding. (4) clamp connection valve: Body with jaws, pipe clamp connection. (5) connected to the valve sleeve: the pipes are connected to the ferrule. (6) of the clip connection valve: bolts directly to the valve and two pipes connected together in the form of wear clip. Shanghai Guanlong Valve Machinery Co., Ltd., the Hong Kong valves (online consultation), the valve provided by the Dongguan Science and Technology Co., Ltd., the Hong Kong valve. Valve Co., Ltd., Dongguan Ming Kong (www.gdmgfm.com) is Dongguan, butterfly leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Ming Kong valve leadership with the staff warmly welcome all inquiries negotiations to create a better valve out of Hong Kong in the future.