Our production of all-welded ball valves in the quality and performance stability is the ordinary cast steel ball valve can not be achieved, the service life is far greater than cast steel ball valves, our all-welded ball valves are widely used in heating, oil supply, shipbuilding, and other types of pipeline equipment above the link system.
我们生产全焊接球阀在品质和性能的稳定性是普通铸钢球阀所无法达到的,使用寿命远远大于铸钢球阀，我们的全焊接球阀广泛应用于供暖 、供油、造船、等各类管道设备上面的链接系统。
All welding work shall meet the following conditions
全焊接工作应该符合以下条件
1, in operation, the valve flow resistance is small, the valve is stable, and the vibration is small when opening and closing.
1、在运行中阀门水流阻力小，密阀性稳定，开启关闭时振动小。
Ball valves specially designed for district heating systems are required.
要求使用为区域供热系统专门设计的球阀。
2, integral welding, no external leakage phenomenon.
2、整体式焊接，不存在外部泄漏现象。
All welded ball valve national standard performance requirements
全焊接球阀国标性能要求
1. Pressure: 1.6MPa
1、压力: 1.6MPa
2, temperature resistance: -29℃-200℃
2、耐温：-29℃-200℃
3. Leakage level: Level A
3、泄漏等级：A级
All welded ball valve design
全焊接球阀设计
1. The valve design meets the requirements of ASME/ANSIB 16.34, GB/T12237-2007, API6D-2008, EN 19, EN 488, EN10204.3.1B.
1、阀门的设计符合ASME/ANSIB 16.34、GB/T12237-2007、API6D-2008、EN 19、 EN 488、EN10204.3.1.B要求。
2, valve body: double seal, all welded structure.
2、阀 体: 双密封、全焊接结构。
3. Ball body: The ball is a hollow ball.
3、球 体: 球体为空心球。
4, valve stem: The valve stem should be designed to open the valve stem seal ring (such as packing cap) under the action of medium pressure, the valve stem will not come out of the structure.
4、阀 杆: 阀杆应设计成在介质压力作用下，拆开阀杆密封圈(如填料压盖) 时，阀杆不致于脱出的结构。
The section of the valve stem and the connection surface with the ball should be able to withstand the maximum operating torque.
阀杆的截面及与球体的连接面应能承受最大操作转矩。
5, diameter requirements: no diameter reduction, the requirement is full diameter welded ball valve
5、通径要求：不缩径，要求为全通径焊接式球阀
