high purity tungsten foils/strips for tungsten boats
1. Dimensions and tolerances
1.1 Tolerances of thickness, width and length
| Thickness | Thickness tolerance | Width | Width tolerance | Length | Length tolerance | |
| Class 1 | Class 2 | |||||
| 0.10~0.20 | ±0.02 | ±0.03 | 30~150 | ±3 | 50~400 | ±3 |
| >0.2~0.30 | ±0.03 | ±0.04 | 50~300 | ±3 | 50~400 | ±3 |
| >0.30~0.40 | ±0.04 | ±0.05 | 50~300 | ±3 | 50~400 | ±3 |
| >0.40~0.60 | ±0.05 | ±0.06 | 50~300 | ±4 | 50~400 | ±4 |
| >0.60~0.80 | ±0.07 | ±0.08 | 50~300 | ±4 | 50~400 | ±4 |
| >0.8~1.0 | ±0.08 | ±0.10 | 50~300 | ±4 | 50~400 | ±4 |
| >1.0~2.0 | ±0.12 | ±0.20 | 50~300 | ±5 | 50~400 | ±5 |
| >2.0~3.0 | ±0.20 | ±0.30 | 50~300 | ±5 | 50~400 | ±5 |
| >3.0~4.0 | ±0.30 | ±0.40 | 50~300 | ±5 | 50~400 | ±5 |
| >4.0~6.0 | ±0.40 | ±0.50 | 50~300 | ±5 | 50~400 | ±5 |
| >6.0~30.0 | ±0.20 | ±0.50 | 50~300 | ±5 | 50~1200 | ±5 |
1.2 Flatness
Flatness: Max. 3 % determined in accordance with ASTM B760-86
2. Surface condition
| Surface: | The sheets are free from impurities, splits, fractures and indentations,having an impact on a common processing or application of the product. |
| Surface roughness: | Cold rolled. bright: Ra ≤ 1.20 μm Cold rolled. ground: Ra ≤ 1.60 μm Cold rolled. pickled (dull): Ra ≤ 2.00 μm |
3. Process
We handle every stage in the manufacture of our products inhouse.From the raw materials through to the finished tungsten foil: including the development of new materials. In this way, we can guarantee that you benefit from the very best quality.
4. Technical condition
GB3875-83 (Chinese standard for tungsten plate , tungsten foil, tungsten strip)
ASTM B760-86(American standard for tungsten plate, sheet, foil and strip)
5. Packaging
Standard individual packing: depending on their size, the sheets will be either packed individually or in parcels with paper between the different pieces.
Special packing: extra costs will be invoiced.
6. Payment
7. Campany Certification
Name: Certificate of Hi-tech Enterprise
Certificate No: GF201161000266
Reference: Science and Technology Hall of Shaanxi Province
Government Finance Hall of Shaanxi Province
National Tax Bureau of Shaanxi Province
Local Taxation Bureau of Shaanxi Province
Name: Registration Form of Foreign Trade Managers
Certificate No: 00126375
Range:
R & D, production and sales of metal and non-metal materials;
Import of the raw materials the enterprise needs;
Export of the products the enterprise produces.
Reference: Registration Organ of Foreign Trade Managers of Shaanxi Province
Title: the materials and method used for backlight illuminant body on LCD (liquid crystal display)
Introduction:
License authority : The National Intellectual Property Administration
Applicant: Baoji Boxin Metal Materials Co., Ltd
Name of patent certificate: the materials and method used for backlight illuminant body on LCD (liquid crystal display)
Application NO.:ZL 2007 1 0019020.3
Application date:Nov. 8th,2007
Name: Business License of Enterprise Legal Person
Register No: 610301100001597
Register Capital: RMB 10,000,000
Legal Person:Han Weidong
Range: R & D, production and sales of metal and non-metal materials;
Import of the raw materials the enterprise needs;
Export of the products the enterprise produces.
Reference: Baoji Administrative Bureau for Industry and Commerce
Name: Independent Inspection Unit Record Certification
Certificate No: 6102600039
Range: Inspection business of Baoji Boxin Metal Materials Co., Ltd
Reference: Baoji CIQ of PRC
Name: Quality Management system Certificate
Registration No:07609010382ROS
Range: Manufacture and Service of metal and alloy rod, wire, plate (expect for national qualification authentication)
Reference: Beijing ZhongRunXing Certification Co., Ltd
8. Company
Boxin is the expert in applications and materials. We manufacture products made of tungsten, molybdenum, tantalum, niobium, titanium, nickel, zirconium, vanadium, cobalt, indium, hafnium, stannum, chromium and their related alloys. We produce these materials on our own equipment as pure metals, alloys or composite materials. We excel with the outstanding properties of our materials wherever traditional solutions meet their limits. They are able to fulfill requirements that other materials simply cannot meet. Through working closely with our customers we successfully master even the most complex challenges. Only those who truly understand the problem are capable of delivering successful, individual solutions.
Boxin is customer oriented. This statement applies to all of our products encompassing standardized flat products, round products and customized components. Our highly flexible production processes enable a wide range of product dimensions that we provide in a broad selection of mass products and customized solutions.
Boxin is the supplier you can count on. Our production, all the way from powder to finished part, at the china largest and most modern refractory metal facilities ensures capacity and volume, and also guarantees the high quality of our products.
other products:
Do you have any very special requirements? For us, that's not a problem: As a specialist in the field of refractory metals, we can adapt the tensile strength and surface properties of our sheets to meet your specific needs.
Just contact us!
Tel:+86-917-3373896/3373898
Fax: +86-917-3373899/3373898