久久爱综合久久爱久久爱,间谍过家家第二季在线观看免费,国产美女在线精品免费观看网址,欧美+日本+国产+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

无码av免费毛片一区二区| 母亲とが话しています免费| 午夜天堂av天堂久久久| 亚洲 欧美 偷自乱 图片| 欧美综合色婷婷欧美综合五月| 久久国产一区二区三区| 国产一区二区草草影院| 日韩精品一区二区三区四区蜜桃| 熟女性饥渴一区二区三区| 丰满少妇被猛男猛烈进入久久| 久久精品无码人妻无码AV蜜臀| 欲求不満の人妻松下纱荣子| 欧美一区二区三区视频在线观看| 按摩高潮A片一区二区三区| 欧美放荡办公室VIDEOS按摩| 久久婷婷五夜综合色啪软件下| 国产AV人人夜夜澡人人爽| 国产suv精品一区二区88| 久久久久久九九99精品| 扒开双腿猛进入jk校花免费网站 | 99久久久国产精品免费调教| 日韩人妻无码专区一本二本| 久久久久久国产精品美女| 777午夜精品久久av蜜桃小说| 久久99精品久久久久久| 国产精品成人国产乱| 亚洲精品久久无码老熟妇| 国产在线精品一区二区| 亚洲AV日韩AV无码污污网站| 向风而行免费观看完整版| 久艾草久久综合精品无码国产| 久久夜色精品国产亚洲AV动态图| 欧美疯狂XXXXBBBB喷潮| 无码欧美毛片一区二区三| 国产精品久久久久AAAA| 亚洲熟妇无码一区二区三区| 激情人妻另类人妻伦| 国产精品美女一区二区视频| 曰批国产精品视频免费观看| 无码国产精品久久一区免费| 97碰碰碰免费公开在线视频|