Import Round Window — Buy in wholesale FOB from Supplier in China
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Round Window
The round optical windows offered by Tian Cheng Optics are precision‑engineered circular components. They are supplied in three material grades - BK7 borosilicate glass, sapphire and infrared‑grade glass - each meeting tight dimensional control. Diameter sizes range from 1 mm to 500 mm with a tolerance of +0/‑0.02 mm, while thickness tolerance is held to 0.01 mm. Surface quality is specified as 10‑5, surface figure as /10, and parallelism within 1 minute of arc, with coating options including uncoated, AR, HR and beamsplitter.
BK7 is a common low‑dispersion glass used in visible‑light systems, while sapphire provides high hardness and thermal stability for demanding environments. Infrared‑grade glass extends transmission into the mid‑IR region, supporting applications beyond the visible spectrum. Typical industry specifications for such windows include a transmission greater than 90 % in the visible range and a refractive index of about 1.517 for BK7, which the supplier’s products generally meet. The flatness of λ/10 and parallelism of 1 minute are standard tolerances that ensure minimal beam deviation in high‑precision assemblies.
These windows are employed in laser delivery systems, projection optics, scientific imaging instruments and industrial measurement equipment. Primary buyers include OEM manufacturers of optical subsystems and trading firms that source components for integration. The listing does not disclose minimum order quantities, pricing or lead‑time, so interested parties should contact Tian Cheng Optics directly to confirm trade terms and delivery schedules.
| Material | BK7 Borosilicate Glass, Sapphire, Infrared‑grade Glass |
| Diameter Range | 1 mm - 500 mm |
| Diameter Tolerance | +0 / -0.02 mm |
| Thickness Tolerance | 0.01 mm |
| Surface Quality | 10‑5 |
| Surface Figure | /10 |
| Parallelism | 1 minute of arc |
| Coating Options | Uncoated, AR, HR, beamsplitter |
| Typical Visible Transmission | >90 % typical |
| Typical Refractive Index (BK7) | 1.517 typical |
Tian Cheng Optics Co., Ltd. is located at No.1188 Ruipeng Street, Chao Yang Zone, Changchun, Jilin, China. The company is listed with a harbor trust tier; its response rate is currently 0.00 and average response time is recorded as 0 hours, indicating limited communication activity. Tian Cheng Optics specialises in the design and manufacture of precision optical components, focusing on custom‑specification round windows for a range of industrial and scientific applications.
The supplier’s catalogue includes round optical windows made from BK7, sapphire and infrared‑grade glasses, as detailed in the product description. It does not disclose production capacity, certifications, or minimum order quantities, so buyers should request those details directly. Tian Cheng Optics serves OEM manufacturers and trading firms that require high‑accuracy optical parts for laser systems, projection optics and measurement equipment.
Round optical windows are precision-engineered components featuring high dimensional accuracy, minimal beam deviation, and superior surface quality. Available in BK7 borosilicate glass, sapphire, and infrared-grade materials for diverse optical applications. These circular transmission windows are suitable for laser systems, scientific instruments, imaging equipment, and industrial optical assemblies. Widely sourced by manufacturers and trading firms for laboratory and industrial applications requiring reliable optical performance with tight tolerances.
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Sourcing Round Window from Tian Cheng Optics Co., Ltd. - China Import Guide
Before placing an order for round windows from Tian Cheng Optics, verify the exact material grade, diameter, tolerance and coating specifications required for your system. Ask for a material data sheet and a recent inspection report confirming surface quality 10‑5 and parallelism 1 minute. Confirm that the supplier can meet your dimensional tolerance of +0/‑0.02 mm and that the coating process follows your performance criteria.
Discuss logistics early; typical shipping from Changchun involves sea freight from the nearest ports such as Tianjin or Dalian. Request the Incoterm (e.g., FOB Changchun port) and ask the supplier to provide a pro‑forma invoice with lead‑time estimates, noting that the listing does not state a specific lead time. Clarify payment terms, such as a letter of credit at sight or TT after inspection, to align with your risk management policy.
Arrange an independent quality inspection before loading; standard checks include dimensional verification, surface roughness measurement and coating spectral analysis per ISO 10110. Request a copy of the inspection certificate and, if needed, a third‑party test report. Ensure that the documentation includes material certification, coating batch number and compliance with any required export regulations for optical glass.
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30 suppliersBuy Round Window in Bulk — Verified Supplier in China
When sourcing Round Window for your business, securing the right balance of quality and cost is essential. Tian Cheng Optics Co., Ltd., a verified supplier based in China, offers this product with key specifications including Round Optical Window, Circular Transmission Window, BK7 Glass, Sapphire, ZnSe (Infrared), Ge (Germanium), and Custom standard sizes (10mm - 200mm typical). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $15250./Unit and manage bulk orders with a minimum order quantity (MOQ) of 1 Unit. This product is actively traded under HS Code 7005.29, making it a staple in the Cupboards, Doors, Gates, Grills & Windows sector with strong demand from importing countries worldwide.
Round Window Specifications, Trade Terms & Pricing
Importing Round Window requires careful attention to shipping logistics, customs compliance, and secure payment terms. Tian Cheng Optics Co., Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 7005.29 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading global B2B marketplace designed to make cross-border trade secure and efficient.
About Tian Cheng Optics Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Round Window has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Cupboards, Doors, Gates, Grills & Windows category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Import Round Window — Shipping, Logistics & Customs
Importing Round Window requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 7005.29 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Round Window
What is the wholesale price of Round Window?
The current listed wholesale price for Round Window from Tian Cheng Optics Co., Ltd. is $15250./Unit on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Tian Cheng Optics Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Round Window?
The supplier, Tian Cheng Optics Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Unit for Round Window. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Round Window?
For international shipping and customs clearance, Round Window is classified under HS Code 7005.29. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Round Window from China?
To import Round Window from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Tian Cheng Optics Co., Ltd.. Ensure you have the necessary import licenses for Cupboards, Doors, Gates, Grills & Windows products in your destination country.
Is Tian Cheng Optics Co., Ltd. a verified supplier?
Yes, Tian Cheng Optics Co., Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Round Window?
The key specifications for Round Window supplied by Tian Cheng Optics Co., Ltd. include Round Optical Window, Circular Transmission Window, BK7 Glass, Sapphire, ZnSe (Infrared), Ge (Germanium), and Custom standard sizes (10mm - 200mm typical). For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Round Window?
Tian Cheng Optics Co., Ltd. offers Round Window with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Round Window the most?
Round Window is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Tian Cheng Optics Co., Ltd. through our platform.
What certifications does this Round Window supplier hold?
Tian Cheng Optics Co., Ltd. maintains international quality certifications. These ensure that the Round Window meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Round Window on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Tian Cheng Optics Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Tian Cheng Optics Co., Ltd..
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