国产传媒日韩在线丝袜,亚洲欧美精品天堂久久综合一区,亚洲一区二区三区伦理电影院,一级做a爰片久久毛片A片潮喷
中文
|
English
HOME
ABOUT US
Return
Company Profile
Corporate Culture
History Vision
Oration
Manufacturing
Quality Assurance
HONOR
Return
TS & High-tech Enterprise Certificate
Product Certification
System Authentication
Patent Certificate
Test Report
National Standard
Other
PRODUCTS
Return
Melamine is special
Wear-resisting valve series
High temperature valve series
Cryogenic valve series
Butterfly Valve
Ball Valve
Gate Valves
Globe Valve
Check valve
Multi-function hydraulic control valve
Pipe fittings and special valves
NEWS
Return
Company News
Industry Dynamics
Technology Frontier
Media Focus
APPLICATION
Return
Petroleum and Natural Gas
Chemical industry
Metallurgical Industry
Electric power industry
Municipal Water Conservancy
Overseas projects
SERVICE
Return
Service Concept
After the terms of service
Technical Support
Download
FAQ
RECRUITMENT
Return
Talent Strategy
Careers
CONTACT US
Return
Contact Us
Agent
HOME
ABOUT US
Return
Company Profile
Corporate Culture
History Vision
Oration
Manufacturing
Quality Assurance
HONOR
Return
TS & High-tech Enterprise Certificate
Product Certification
System Authentication
Patent Certificate
Test Report
National Standard
Other
PRODUCTS
Return
Melamine is special
Wear-resisting valve series
High temperature valve series
Cryogenic valve series
Butterfly Valve
Ball Valve
Gate Valves
Globe Valve
Check valve
Multi-function hydraulic control valve
Pipe fittings and special valves
NEWS
Return
Company News
Industry Dynamics
Technology Frontier
Media Focus
APPLICATION
Return
Petroleum and Natural Gas
Chemical industry
Metallurgical Industry
Electric power industry
Municipal Water Conservancy
Overseas projects
SERVICE
Return
Service Concept
After the terms of service
Technical Support
Download
FAQ
RECRUITMENT
Return
Talent Strategy
Careers
CONTACT US
Return
Contact Us
Agent
中文
|
English
為什么切斷閥應盡量選用硬密封?
Time:2015-11-12
切斷閥要求泄露越低越好,軟密封的泄露是最低,切斷閥效果當然好,但不耐磨,可靠性差,從泄漏量對密封及可靠性的雙重標準來看,軟密封切斷就不如硬密封切斷好。
--切斷閥要求泄露越低越好,軟密封的泄露是最低,切斷閥效果當然好,但不耐磨,可靠性差,從泄漏量對密封及可靠性的雙重標準來看,軟密封切斷就不如硬密封切斷好。
Previous:
為什么雙座閥小開度工作容易震蕩?
Next:
法蘭泄露
ABOUT US
Company Profile
Corporate Culture
History Vision
Oration
Manufacturing
Quality Assurance
HONOR
TS & High-tech Enterprise Certificate
Product Certification
System Authentication
Patent Certificate書
Test Report
National Standard
Other
PRODUCTS
Melamine is special
Wear-resisting valve series
High temperature valve series
Cryogenic valve series
Butterfly Valve
Ball Valve
Gate Valves
Globe Valve
Check valve
Multi-function hydraulic control valve
Pipe fittings and special valves
APPLICATION
Petroleum and Natural Gas
Chemical industry
Metallurgical Industry
Electric power industry
Municipal Water Conservancy
Overseas projects
Pay attention to us
021-59141010
Add:No. 35 Jiangqiao Road, Jiading Jiangqiao Industrial Park, Shanghai(201803)
Net sales Tel:021-69118082
18701760109
Net sales mailbox:wxw@ht-valve.com
Acting Line:021-69118002
021-69118957
Agent Mailbox:wlx@ht-valve.com
Copyright ? 2019 Shanghai Hua Tong Valve Co., Ltd.
Contact
|
Service
|
Application
|
Links
|
Site Policy
滬ICP備05037222號-1
TOP
HuaTong
18701760109
1302308486@qq.com
主站蜘蛛池模板:
永靖县
|
清新县
|
衡东县
|
阿拉尔市
|
铅山县
|
山东省
|
荥经县
|
五华县
|
奉贤区
|
定日县
|
大同市
|
梁山县
|
临猗县
|
陕西省
|
新源县
|
谷城县
|
临江市
|
彭泽县
|
当涂县
|
巧家县
|
周口市
|
昭通市
|
安新县
|
迁西县
|
乐至县
|
平罗县
|
图们市
|
板桥市
|
麻城市
|
临沭县
|
牙克石市
|
历史
|
湘乡市
|
成安县
|
惠东县
|
盐池县
|
延庆县
|
大洼县
|
兴义市
|
五华县
|
永丰县
|