亚洲精品无码少妇30p,久久久久久精品中文字幕,午夜男女爽爽影院a片免费,五月天亚洲综合

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

日韩精彩视频一区二区三区| 久久88综合久久88伊人| 白丝袜AV网站在线观看| 中日韩在线视频免费观看| 国内亚洲欧美一区二区三区| 99精品视频只有精品高清| 高清一区二区三区日本| 伊人久久成综合久久影院| 我不卡在线观看高清视频| 超碰99久久久久久宅男| 国产 日本 欧美 一区| 成人在线理论片| 日美韩精品一区二区三区| 久久做品人人做人人综合| 亚洲综合一区二区精品专区| 国产综合久久一区二区三区| 亚洲精品国产成人久久av| 亚洲日韩国产av无码无码精品 | 亚洲一区二区三区尿失禁| 亚洲国产不卡久久久久久| 国产精品夜来香视频播放| 熟女国产精品一区二区三| 久久e这里只有精品乐播| 精品无码一区二区三区亚洲桃色| 国产成人综合日韩精品无| 久久精品麻豆日日躁夜夜躁| 亚洲第一区中文99精品| 国产精品一二三免费视频| 伊人成色综合人夜夜久久| 蜜芽va亚洲va欧美va天堂| 精品国产自在91欧美日韩| 久久国产综合色免费观看| 亚洲成在人天堂一区二区| 国产精品免费a v片在线观看 | 青草视频在线观看| 丁香五月亚洲综合色婷婷| 人妻中文字字幕在线乱码| 无码不卡av东京热毛片| 欧美日韩十八禁一区二区| 久久熟妇人妻午夜寂寞影院| 亚洲中文字幕一区女教师|