同性两男a片黄在线观看,午夜大乳房视频在线播放,在线观看国产一区二三区,青青操视频免费在线观看

Welcome to Fujian Yongjing Technology Co., Ltd. the website!

Contact us

Add: 18#, Xin'An Road, Shaowu City, Fujian, China
International Trade Dept.
Tel: +86-599-6655932/6654968
Fax: +86-599-6654591
Home Trade Dept. 
Tel: +86-599-6654866/6654968
Fax: +86-599-6655755
High-purity Chemicals Dept.
Tel: +86-599-6655536/6654968
Fax: +86-599-6655755


Products

Industrial Sulphur Hexafluoride

Quality StandardGB/T 12022-2014

Molecular formulaSF                         Molecular weight146.05

Item

National Standard
GB/T 12022-2014

Company Standard

Sulfur Hexafluoride (SF6) (mass fraction)/ 10-2  ≥

99.90

99.90

Air (mass fraction)/10-6 ≤

300

30

Carbon Tetrafluoride (CF4) (mass fraction)/10-6  ≤

100

3

Hexafluoroethane(C2F6) (mass fraction)/10-6 ≤

200

6

Octafluoropropane (C3F8) (mass fraction)/10-6   ≤

50

3

Moisture (H2O) (mass fraction)/10-6 ≤

5.0

3.0

Acidity (as HF)(HF)(mass fraction)/10-6  ≤

0.2

0.1

Hydrolyzable Fluoride (as HF) (HF) (mass fraction)/10-6 ≤

1.0

0.8

Mineral Oil (mass fraction)/10-6 ≤

4.0

3.0

Bioexperiment ≤

Non-toxic in bio-test

Non-toxic in bio-test

Properties
Sulphur hexafluoride is liquid under normal temperature and pressure. It’s a colorless, odorless, non-toxic and non-corrosive gas. Its melting point is -50℃, boiling point is -63.8℃, and the density is 6.12g/L(20℃ 0.1MPS). It is an excellent electrical insulator.
Application
Sulphur hexafluoride is an excellent insert insulating gas widely used in high-voltage electric equipments and ground cables, mainly including electronic equipments, radar, particle accelerator, transformer, lightning arresters, refrigerant etc.
Storage
In cool, dry and ventilated warehouse.
Transport
With symbols indicated in GB19-73. The coefficient of the filling cylinders should not be higher than 1.33kg/L.
Packing
In seamless steel cylinder(40L, 12.5L, 10L, 8L, 4L)(Normally, the pressure is 15MPa, the filling coefficient<1.37kg/L).

【Back】

Copyright(C)2017,Fujian Yongjing Technology Co., Ltd. All Rights Reserved. Supported by ChemNet ChinaChemNet Toocle Copyright Notice

亚洲国产精品爱久久久久| 中文无码人妻在线一区不卡 | 久久久受www免费人成| 成人亚洲av二区三区久| 在线免费看午夜精品福利| 人妻的屁股一区二区三区| 女人麻豆国产香蕉久久精品| 欧美一区二区三区狠狠色| 色猫咪在线观看免费视频| 在线免费观看a黄色网站| 亚洲aaa视频| 少妇人妻精品一区二区三区| 色偷偷女人的天堂亚洲网| 亚洲另类自拍丝袜第1页| 亚洲精品午夜不卡在线播放| 亚洲精品成人18久久久久| 性在线勾引户外蜜臀av| 久久久久88色偷偷免费| 亚洲av乱码一区二区三区| 国产精品岛国久久久久软件| 日韩欧美一区二区三区av| 九九热这里只有精品在线| 国产精品福利午夜h视频| 一起草视频在线播放观看| 邻居少妇张开双腿让我爽一夜| 永久域名18勿进永久域名在线| 国产一区二区三区不卡观| 在线观看免费完整版日本| 欧美日韩毛片熟妇有码无码| 成人无码www免费视频| 俺来也在线视频免费观看| 一本到中文字幕在线精品| 亚洲伦产精品| 成人自拍视:频在线观看| 苍井空免费人成在线观看| 国产精品视频a| 曰曰摸天天摸人人看久久| 国产A级理论片无码老男人| 三级小黄片视频在线播放| 久久99精品中文字幕在| 国产原创自拍看在线视频|