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

俺来也 俺也去 在线看| 亚州高清在线日韩精品品| 亚洲高清一二区二区三区| 久久99热东京热亲亲热| 无码熟妇人妻AV在线一| 最新国产极品高清在线看| 久久爱色欲AV| 日本少妇的激情在线观看| 亚洲欧美国产日韩综合久久| 精品人妻伦一二三区免费| 欧美午夜精品一区区电影| 欧美三级电影一区二区三区| 久久综合狠狠综合久久综合88| 午夜半我淫视频| 中文字幕制服欧美久久一区| 乱人伦人成品精国产在线| 高颜值紧身牛仔裤国产精品| 最新国产原创中文日在线| 国产一级二级三级在线观看| 侵犯小太正bl浴室| 久久热这里只有精品国产| 狠狠亚洲婷婷综合色五月五月色 | 国产欧美幺幺一区二区三区| 弥生みづき中文字幕在线| 亚洲国产不卡久久久久久| 亚洲av第一成肉网| 中文字幕一区波多野结衣| 久久亚洲中文无码咪咪爱| 一级做a爰片久久免费看| 久久久久久精品人妻一区| 天堂在线最新版在线天堂| 国产区在线视频明星在线| 婷婷久久久久久久久久久| 试看a片成人免费区| 真实刺激交换娇妻13篇| 囯产亚洲日韩欧美看国产| 日本天狼无码久久久久影院| 日本亚洲一区二区精品久久 | 欧美日韩亚洲一区二区国产| 午夜电影网站 国产 一区| 在线观看国产三级片视频|