D21/61/81/71不锈钢(快装、焊接、螺纹)卫生级蝶阀
BD43H、BD343H法兰保温夹套蝶阀
D41F46/4、D341F46/4衬氟法兰蝶阀
D71F4/F46衬氟对夹(不锈钢/铸钢)蝶阀
D371F、D71F不锈钢衬氟对夹蝶阀
D971X/J对夹衬胶电动蝶阀
D41J、D341J衬胶(不锈钢/铸钢)法兰蝶阀
D71XJ/D371XJ对夹衬胶(手动、蜗轮)蝶阀
D371X/F/J对夹软密封蜗轮传动蝶阀
D71X/F对夹手动软密封蝶阀