FM /UL aproved grooved fitting rigid coupling

1. All sizes available.
2. Cast iron.
3. Surface is treated with epoxy powder, galvanized, painted, dacromet, ETC
4. FM, UL approved.
5. Exported abroad directly from our own factories, so the price is competitive.
6. OEM acceptable, or according to customers' special requirements
FM /UL aproved grooved fitting rigid coupling