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model |
specification |
QBF-30C |
Single flat flange type |
QBF1-30C |
Single flat flange type |
QBF2-31C |
double flat flanges type |
QBF3-30C |
Single insert flange type |
QBF4-31C |
Flat insert flange type |
QBF5-31C |
Double insert flange type |