Explosion-proof Threading Box (BHC)
| Model | BHC |
| Executive Standard | GB3836.1-2010, GB3836.3-2010, GB12476.1-2013, GB12476.5-2013 |
| Explosion Proof Mark | Ex d II tD A21, Exe IIC Gb |
| Protection Grade | IP65 |
| Structure | A, B, C, D, E, F, G, H |
| Material | Cast Steel, Aluminum Alloy, 304 Stainless Steel |
| Size | G1/2, G3/4, G1, G1-1/4, G1-1/2, G2 |
