logo

NEWS

当前位置:
Homepage
>
>
Weld requirements for large diameter flange pipe fittings

Weld requirements for large diameter flange pipe fittings

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2021-10-13 11:06
  • Views:

(Summary description)The requirements for welding welds of large diameter flanged pipe fittings are more demanding.

Weld requirements for large diameter flange pipe fittings

(Summary description)The requirements for welding welds of large diameter flanged pipe fittings are more demanding.

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2021-10-13 11:06
  • Views:
Information

Compared with standard flanged pipe fittings, the requirements for welding welds of large diameter flanged pipe fittings are more demanding. The reason is simply that the operating environment of large diameter flanged pipe fittings requires higher strength.How to guarantee the weld quality of large flange pipe fittings?The answer: rigorous testing techniques.In the testing equipment, the commonly used is ultrasonic detection and X-ray detection.For the welds of large diameter flanged pipe fittings, 100% ultrasonic or X-ray detection should be carried out.The purpose of the test is to ensure that there are no cracks in the appearance of the flange disc or other defects that reduce the strength of the flange disc.

 

 

For those long diameter large diameter flange pipe disc testing, it should be tested in the large planning working pressure state exceeding its working pressure 0.8 times, and requires 100% of the X-ray examination.When it comes to testing ratings and specifications, the ultrasonic testing of large flanged pipe discs is grade I qualified products, while the radiographic testing requirements are grade II.

 

 

In large diameter flange pipe flange pipe fittings and other heat treatment, the heating temperature is a very crucial goals, the choice of heating temperature and control involves the quality of heat treatment and quality of the final product, so, in the large diameter flange pipe fittings such as heat treatment process, how to choose the appropriate heating methods, and how to control the heating temperature,It's something we need to pay more attention to.

 

In the early stage of the flange pipe fittings pipe heat treatment, generally using coal and charcoal as heating source, the heating effects besides, the method of the natural environment pollution is self-evident, as to the attention of the industrial pollution in recent years, some new type of fuel used in the industrial heat treatment, such as some gas and liquid fuel.

Keyword:

Scan the QR code to read on your phone

logo
Tel
Fax:
E-mail
Office Add

Tel: +86 157 2731 7311
Tel: +86 157 2731 7311
E-mail: sales@whsteelfittings.com

Factory Add:Zhenggang Industrial Park, Yanshan County, Cangzhou City Hebei Province, China.

tel
fax
e-mail
Office Add

Tel: +86 157 2731 7311
Tel: +86 157 2731 7311
E-mail: 
sales@whsteelfittings.com

Office Add:No.8013 FuHuaHongYan Building,HongYan South road,Chaoyang District ,Beijing ,P.R.CHINA

SOCIAL MEDIA

Copyright © 2020 WH-STEEL     冀ICP备20009811号   Powered by www.300.cn