News
- Introduction of insulating flange2019-04-20
- What is large caliber flange?2019-04-19
- Introduction and advantages and disadvantages of long weld neck flanges2019-04-18
- Stainless steel flange rust removal process2019-04-17
- The methods of magnetic particle testing2019-04-16
- Haihao Group in NEFTEGAZ2019-04-15
- Types of nondestructive testing2019-04-12
- How does PE pipes connecting with flanges?2019-04-11
- What is a loose flange?2019-04-10
- Haihao Group attended in CIPPE2019-04-09
- What are spiral wound gaskets?2019-04-08
- Weld overlay cladding flanges were finished by Haihao Group2019-04-04
- How to choose flange coating?-Interseal 670HS,Intergard 475HS and Interthane 9902019-04-03
- Application of anchor flange2019-04-02
- Comparison of butt welding flanges with neck and flat welding flanges with neck2019-04-01
- How to distinguish butt welding ring lap joint flange and slip on ring lap joint flange?2019-03-29
- What is a socket weld flange(SW flange)?2019-03-28
- Haihao Group will attend NEFTEGAZ 2019| flanges manufacturer2019-03-22
- Haihao Group finished GOST 12820-80 slip on flanges used for Rumaila oilfield in Iraq2019-03-21
- Haihao Group finished the RST37-2 throttle orifice plate2019-03-20