HH49X-16P/R不锈钢微...

HH49X-10微阻缓闭蝶式

HH48W-25P/R不锈钢微...

HH48H-40C铸钢微阻缓

H42F4-16C铸钢立式衬

H42F46-16P/R不锈钢衬...

H42F46-16C铸钢衬氟立

H44Y-150LB不锈钢美标

H44W-600LB美标API止

H44H-600LB美标碳钢旋