Overview
This lot includes four B-Line BLWG-1H 50mm protective welding lenses with shade 5 optical density. These classic green glass lenses are designed for use in fixed-front welding goggles and cup-style frames, providing consistent IR and UV protection during arc welding, gas welding, and brazing operations. Supplied in new old stock condition, these are authentic vintage B-Line lenses suited for replacement or inventory stocking in production welding environments.
Key Features
- 50mm diameter round lens, standard welding goggle fit
- Shade 5 optical density for general arc welding and cutting torch operations
- Green optical glass provides IR and UV filtration
- Lot of 4 units – economical for restocking or workshop supply
- New old stock (NOS) – unused inventory from B-Line manufacturing era
Technical Specifications
| Lens Diameter | 50mm (round) |
| Shade Number | 5 |
| Lens Material | Optical glass |
| Lens Color | Green |
| Quantity per Lot | 4 units |
| Condition | New in Box – NOS |
| Manufacturer | B-Line |
| Part Number | BLWG-1H |
Typical Applications
B-Line BLWG-1H shade 5 lenses are used in welding shops, fabrication facilities, and maintenance settings where fixed-front welding goggles are the standard. Common applications include:
- Shielded metal arc welding (SMAW) with mild and stainless steel electrodes
- Gas tungsten arc welding (GTAW) at moderate amperage
- Brazing and torch cutting operations
- Replacement inventory for shop floor goggle rotation
Compatibility & Replacements
Compatible With
- Standard 50mm round welding goggle cup frames
- Fixed-front welding goggles with 50mm lens aperture
- Welding helmet adaptors accepting 50mm round lenses
Replaces / Drop-In Replacement For
The B-Line BLWG-1H is a direct replacement for other 50mm shade 5 round welding lenses in compatible goggle frames. Verify lens mounting diameter and frame type compatibility with your goggle manufacturer before ordering to ensure proper fit and seal.
Works With
- General-purpose manual arc welding equipment (DC and AC)
- Gas tungsten arc (TIG) welding at standard duty cycles
- Oxy-fuel brazing and cutting torch rigs
- Any welding goggle frame or helmet designed for 50mm round lenses
