Shanghai Longway Special Glass Co., Ltd.
| Payment Terms | T/T,Western Union |
| Supply Ability | 50000 Pieces per Month |
| Packaging Details | paper,foam,carton |
| Customized support | OEM |
| Structure | flat round |
| Item | Sight glass |
| Surface | Polished |
| Transmission | over 90% |
| Processing | grinding and polishing |
| Application | Industrial and lighting |
| OEM | available |
| Brand Name | LONGWAY |
| Model Number | LW160922795 |
| Certification | ISO9001 |
| Place of Origin | Shanghai, China |
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Product Specification
| Payment Terms | T/T,Western Union | Supply Ability | 50000 Pieces per Month |
| Packaging Details | paper,foam,carton | Customized support | OEM |
| Structure | flat round | Item | Sight glass |
| Surface | Polished | Transmission | over 90% |
| Processing | grinding and polishing | Application | Industrial and lighting |
| OEM | available | Brand Name | LONGWAY |
| Model Number | LW160922795 | Certification | ISO9001 |
| Place of Origin | Shanghai, China | ||
| High Light | Transparent Observation Sight Glass ，Low-Reflection glass for Flange Gauges ，Tempered Flange sight glass | ||
1. Material & Construction
Core Material: Borosilicate glass (Schott Borofloat®/equivalent) or soda-lime glass
Surface Treatment:
Anti-reflective (AR) coating (V-coating or broadband)
Chemical tempering (ion-exchange process)
Sealing: Integrated EPDM/graphite gaskets for pressure containment
2. Key Properties
Optical Clarity:
99% visible light transmission (uncoated: >92%)
Reflectivity <0.5% per surface (550nm)
Mechanical Strength:
IK08 impact resistance (5J impact tolerance)
4x stronger than annealed glass
Pressure/Thermal Ratings:
Withstands 25+ bar pressure (ASME B16.5 compliant)
Thermal shock resistance: ΔT >150°C
Chemical Resistance:
pH 1-14 compatibility
Resists oils, solvents, and process chemicals
3. Core Functions
Visual Monitoring: Unobstructed view of fluid flow/level without glare
Pressure Containment: Maintains seal integrity at rated PSI
Safety Assurance: Shatterproof design contains fragments upon failure
Process Verification: Enables visual inspection of media color/contaminants
4. Applications
Industrial Process Vessels:
Reactor sight glasses (chemical/pharma)
Pipeline inspection ports (oil/gas)
Fluid Control Systems:
Pump gauge glasses
Boiler level indicators (ASME Section VIII)
Utility Infrastructure:
Water treatment plant gauges
Steam line observation windows
| Item | Glass disc, Sight glass, Panel lens, Glass sheet |
| Material | Optical glass, Qurartz glass,borosilicate glass, Float glass, borofloat |
| Diameter Tolerance | +0/-0.2 mm |
| Thickness Tolerance | +/-0.2 mm |
| Processed | By Cutting,Grinding,Tempering, Polishing |
| Working temperature | Resisting high temperature shock |
| Surface Quality | 80/50,60/40,40/20 |
| Material Quality | No scratches and air bubble |
| Transmission | >90% for visible light |
| Chamfer | 0.1-0.3 mm x 45 degree |
| Surface Coating | Available |
| Usage | Optics, Lighting system, industrial area. |
Company Details
Business Type:
Manufacturer,Agent,Exporter,Trading Company,Seller
Year Established:
2008
Total Annual:
1000000-5000000
Employee Number:
30~100
Ecer Certification：
Verified Supplier
Introduction Shanghai Longway Special Glass Co., Ltd. has been a professional supplier in the glass industry for over 20 years. With its expertise spanning across various fields, including optics, laser, imaging, and lighting etc., the company has established itself as a trusted partner for busines... Introduction Shanghai Longway Special Glass Co., Ltd. has been a professional supplier in the glass industry for over 20 years. With its expertise spanning across various fields, including optics, laser, imaging, and lighting etc., the company has established itself as a trusted partner for busines...
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