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:
盐津县
|
东方市
|
江西省
|
满洲里市
|
龙州县
|
阿拉善右旗
|
曲周县
|
景洪市
|
广宁县
|
册亨县
|
宁陵县
|
商城县
|
云梦县
|
柯坪县
|
射洪县
|
石门县
|
保德县
|
阆中市
|
凤山县
|
友谊县
|
新乡县
|
萨迦县
|
黔江区
|
衡东县
|
凤凰县
|
祁连县
|
道真
|
宝坻区
|
赣州市
|
永寿县
|
仪陇县
|
屏南县
|
渝中区
|
奉贤区
|
乐东
|
家居
|
昌黎县
|
蒙阴县
|
兰考县
|
中西区
|
潢川县
|