Body symmetry, in particular weldedbody structure, well under the stress from the pipe.
阀体对称，尤其是焊接阀体结构，能很好地承受来自管道的应力。
2
The pressure boundary is secured by a seal-weldedbody-bonnet joint and a live-loaded packing chamber.
压力界限通过密封-楔板，阀体-阀帽连接和动负载填料腔来保证。
3
Furnace steel and steel plates were weldedbody constituted by the shell, and its both ends with heat-resistant material made of stainless steel pneumatic door.