Ways to distinguish high quality hardware accessories:
Appearance: The appearance of the factory accessories is smooth, uniform, exquisite, uniform, free of burrs, rust spots, etc., high processing precision, good interchangeability, formal brand, origin and quality assurance commitment period; noisy manufacturers have rough appearance, often with naked eyes Visible, there is no quality assurance commitment.
Brand: There are hundreds of well-known brands in the world that produce kitchen cabinet accessories. The performances are highlighted by Austrian Blum, German Hettich, Austrian Grenache, Italian Salic and so on.
Inspection: Whether the guide rail and hinge are open and closed smoothly, no abnormal noise; whether the handle has rust, whether the surface oxide layer is detached, whether the plating layer and the gloss are uniform; whether the damper is closed smoothly; whether the sliding of the drawer is smooth under the load state.
Report: All hardware accessories should have test reports from domestic or international specialized certification bodies to prove that the various performances of the accessories meet the standards.
With these methods, buyers can generally guarantee that their rights and interests have not been damaged. Of course, don't forget to write down the location of the store you purchased, and remember to ask the boss for invoices and contact information. Some hardware markets have to buy. The area where the home can be tried on the spot should not cause unnecessary losses due to trouble.
Concerned about surprises
Label: How to distinguish high-quality hardware accessories
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Our Dome Lens is an optical window composed of two parallel curved surfaces. Dome lenses are commonly used in meteorology applications, pyranometers, defence applications and often used in high pressure viewports in underwater cameras and submersibles.For this reason our dome offer both high transmission as well as durability. Other application for our dome include visible-range domes for pyranometers and infrared-range domes for pyrgeometers, and as high pressure viewports in underwater cameras and submersibles.
BK7 or K9L domes are used primarily in meteorology applications. BK7 offers excellent transmission from 300nm up to 2µm. BK7 is a relatively hard material, with excellent chemical durability.
UV fused silica domes ( JGS1 ): For applications operating in the deeper UV range, we offers a range of UV fused silica domes. Fused silica domes are commonly used in underwater applications at extremely high pressures.
Sapphire domes: For infrared applications we can provide sapphire domes. Sapphire is an extremely hard material with transmission of over 80% in the 2-5µm wavelength range. As with fused silica, sapphire is able to withstand extreme pressures, making it the perfect material for underwater camera and missile fairing applications.
Specifiation of our dome lens as follow:
Material:Optical glass N-BK7 , H-K9L, UV Fused Silica, Sapphire, and infrared crystal materials.
Diameter:20-350mm
Diameter Tolerance:+/-0.1mm
Thickness:>2mm
Thickness Tolerance±0.2~0.1mm
Center Deviation:3-5'
Surface quality:80/50 60/40
Coating: Antireflection Coating inside
Chamfers:0.2 x 45° typical
300Mm Diameter Dome Lens,300 Mm Diameter Hemisphere Dome Lens,Glass Dome Lens For Camera,Dome Lens For Subsea Shooting
China Star Optics Technology Co.,Ltd. , https://www.realpoooptics.com