| Principle: | Molded |
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| Range: | 0-3m |
| Measurement Accuracy: | ±3mm |
| Samples: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier
Borosilicate glass according to DIN 7080.
For compressive stress with temperatures borosilicate circular sight glass up to max. 280 degrees Celsius,
Where a greater degree of chemical resistance or higher operating temperatures are required, a borosilicate glass should be specified. In a toughened form, temperatures up to 315 degrees Celsius are possible whilst annealed glass may be used up 400 degrees Celsius continuously with a short term maximum of 500 degrees Celsius.
In addition to standard DIN sizes, glasses are available in a wide range of diameters up to 60mm thick (see annular edge sight glass).
Soda Lime glass according to DIN 8902.
For compressive stress with temperatures borosilicate circular sight glass up to max. 150 degrees Celsius,
This is the most commonly used material due to its low cost. It can be easily toughened to effectively increase the mechanical strength of annealed glass by up to five times.
We have plant and equipment, including our water-jet cutting machine and CNC machining center, to produce diameters between 3mm and 1500 mm, and thicknesses up to 25m.
Quartz glass according to customer's requirements, made from JGS1, JGS2, JGS3, on production.
| TESTING ITEM | STANDARD RULES | TEST RESULT |
| Coefficient of expansion | 3.3±0.1)*10-6/K | 3.35 *10-6/K |
| Annealing point °C | 560 ± 10 | 562 |
| Density r | 2.23 g · cm-3 ±0.1 g · cm-3 | 2.24 g · cm-3 |
| Softening point °C | 825 ± 10 | 829 |
| Working point °C | 1260 ±10 | 1255 |
| Maximum short-time working temperature °C | 500 ± 10 | 510 |
| Transmittance | ≥96%/2mm | 97%/2mm |
| Hydraulic power | -10ºC,16kg/cm2 | -10ºC,16kg/cm2 |
| bending strength | > = 160N/mm2 | 170N/mm2 |
| tolerance | +-0.5mm | +-0.5mm |
| thickness tolerance | +-0.5mm | 0--0.4mm |
| Conclusion: The product all testing result is up to the standard | ||
1.Can we get your free samples?
Yes, you can. Our free sample can be provided for our customers to test quality. But the freight for express is on buyer's account. The way we send it to you is via DHL, you can also call your local express to pick up samples from our office.
2.Can we do printing or label printing on the glass?
Yes, you can. We could offer various printing ways: screen printing, hot stamping, label printing.
3.What is the normal lead time?
For stock products, we will send goods to you within 24-48 hours after we receive your payment.For customer color bottle, we will ship out within 3-6 days.
4.What is your shipping terms?
A. For small trial order, FEDEX, DHL, UPS, TNT, etc can be provided.
B. For larger order, we can arrange shipment by sea or by air according to your requirement.
5.How does your factory do regarding quality control?
We do leak test for 3 times before packing.
Suppliers with verified business licenses
Audited Supplier 
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