Galvalume/Aluzinc Cold Rolled Steel Sheet/Plate
| Product Name | Galvalume/Aluzinc Cold Rolled Steel Sheet/Plate |
| Standard | ASTM, JIS, GB, AISI, DIN, BS |
| Certification | ISO, BV, CE, SGS,SAI,CANS |
| Grade | SGCC,DC51D,DX51D,DX52D,SGCD,Q195,Q235,SGHC,DX54D,S350GD,S450GD,S550GD |
| Thickness | 0.12mm-1.5mm |
| Film Thickness | Top:10~30um  Back:5~15um |
| Width | 40mm-1250mm |
| Coil ID | 508mm/610mm |
| Zinc Coating | 40-275g/m2 |
| Coil weight | 3-5MT or as your requested |
| Surface Treatment | Chromated and oiled, chromated and non-oiled, Anti-finger |
| Color | Ral Card or as per request |
| Payment | T/T, L/C at sight, Paypal, Western Union,Kunlun bank |
| Delivery Time | 7-20 workdays after confirmed order |
| MOQ | 25MT |
| Packing | Standard seaworthy export packing |
| Loading port | Qingdao/Tianjin/Shanghai Port |
Quality Inspection:
Packing and Transportation:
The main product:
1.Prepainted Galvanized Steel Sheet(PPGI)
2.Prepainted Galvalume Steel Sheet(PPGL)
3.Galvanized Steel(GI)
4.Aluzinc Steel(GL)
5.Corrugated Roofing Sheet&Plate
Contact information:
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Germanium Plano-Convex (PCX) Lenses feature precision diamond turned surfaces making them ideal for a variety of infrared applications, including thermal imaging, infrared spectroscopy, and remote sensing. Germanium (Ge) is popular for its high index of refraction, broad transmission range, and rugged mechanical properties. These lenses are available in 25 and 50mm diameters, uncoated, or with multiple broadband coating options.
Germanium (Ge) material feature high index of refraction (around 4.0 from 2 - 14μm), an anti-reflection coating is recommended on these germanium windows for sufficient transmission in the region of interest. Germanium is subject to thermal runaway, meaning that the transmission decreases as temperature increases. As such, these germanium windows should be used at temperatures below 100°C. Germanium`s high density (5.33 g/cm3) should be considered when designing for weight-sensitive systems. 
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Germanium windows specifications |
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| Standard precision | High-precision | |
| Dimension Tolerance | φ5-250mm+0/-0.2 | φ3-350mm+0/-0.2 |
| Thickness Tolerance | 1-50mm+/-0.1 | 1-50mm |
| Parallelism | 1 arc minute | 10 arc seconds |
| Surface Quality | 60/40 | 20/10 |
| Flatness | N<λ/2@633nm(at 50mm) | N<λ/10@633nm(at 50mm) |
| Clear Aperture | >90% | >95% |
| Chamfer | Protected <0.5mmx45deg | Protected <0.5mmx45deg |
Germanium Lens,Ge Infrared Aspheric Lens,Germanium Aspheric Lens,Germanium Infrared Lens
China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com