
GB/T3836.1、GB/T3836.2、GB/T3836.3、GB/T3836.31、IEC60079-0、IEC60079-1、IEC60079-7、IEC60079-31

| Model | Pipe Diameter (mm) | Thread Specification | Explosion-Proof Marking | Protection Rating | Length (mm) | |
| BNG-□ | 15 | US Standard | NPT1/2 | Ex eb IIC Gb, Ex tb IIIC Db |
IP66 | 200~5000 |
| 20 | NPT3/4 | |||||
| 25 | NPT1 | |||||
| 32 | NPT1 1/4 | |||||
| 40 | NPT1 1/2 | |||||
| 50 | NPT2 | |||||
| 70 | NPT2 1/2 | |||||
| 80 | NPT3 | |||||
| 100 | NPT4 | |||||
| 15 | Metric | M20×1.5 | Ex db IIC Gb, Ex eb IIC Gb, Ex tb IIIC Db |
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| 20 | M25×1.5 | |||||
| 25 | M32×1.5 | |||||
| 32 | M40×1.5 | |||||
| 40 | M50×1.5 | |||||
| 50 | M63×1.5 | |||||
| 70 | M75×1.5、M75×2 | |||||
| 80 | M90×1.5、M90×2 | |||||
| 100 | M100×1.5、M100×2 M110×1.5、M110×2 M115×1.5、M115×2 |
|||||
| 15 | Imperial | G1/2" | ||||
| 20 | G3/4" | |||||
| 25 | G1" | |||||
| 32 | G1 1/4" | |||||
| 40 | G1 1/2" | |||||
| 50 | G2" | |||||
| 70 | G2 1/2" | |||||
| 80 | G3" | |||||
| 100 | G4" | |||||

1. Features include dye resistance, corrosion resistance, water resistance, aging resistance, excellent flexibility, robust construction, and reliable performance;
2. Thread specifications can be customized per customer requirements, such as NPT or metric threads;
3. Offers oil resistance, acid resistance, corrosion resistance, wear resistance, aging resistance, waterproofing, flame retardancy, and excellent flexibility;
4. Flexible tube lengths can be specially processed according to user specifications.








1. Suitable for Zone 1 and Zone 2 locations in explosive gas environments;
2. Suitable for Class IIA, IIB, and IIC explosive gas environments;
3. Suitable for Zone 21 and Zone 22 locations in explosive dust environments;
4. Suitable for Class IIIA, IIIB, and IIC explosive dust environments;
5. Widely used for cable entry/exit connections in explosion-proof electrical equipment within hazardous environments such as petroleum extraction, refining, chemical processing, and military applications, or for connections in situations where steel pipe routing presents significant bending challenges.