GFHC44X厦门双特阀门厂供应橡胶瓣止回阀

GFHQ41X GFHQ44X GFHQ无磨损球形止回阀

CFHC42X/T*止回阀

GFH41X/H消声止回阀

GFDHH 44H/47X微阻缓闭消声止回阀

GFHH 46/48/49X/H微阻缓闭蝶式止回阀

GFHH44T/X/H微阻缓闭止回阀

DH7cs41液控止回蝶阀

斜座式硬密封缓闭式止回阀

平板闸阀

FD343HFD343H型防盗蝶阀

Q41F三片式法兰球阀