1, the welding structure is used to connect the valve and piping.
2, sealing surface is not easy to wear, abrasion, good sealing performance, long service life.
3, compact structure, good opening and closing, small height, easy maintenance. 
4, suitable for water, steam, oil pipelines, has the characteristics of resistance to high temperature and high pressure.
 standards
1, manufacturing acceptance conditions according to the provisions of the JB/T3595 or E101.
2, the valve structure according to the provisions of the ANSI B16.10 or E101 length.
3, the valve body welding groove according to the provisions of the ANSI B16.25 or according to the size of provided by the user.