News
- Haihao Group perform PMI testing for flanged pipe2018-10-11
- Spectacle flange2018-08-29
- Production Limitation Lead to the Crazily Rising of Price2018-08-29
- Economic Development and Environmental Protection Go Hand in Hand2018-08-29
- OD 3000mm above Big size pipe fittings and flange2018-08-28
- Threaded Flanges2018-08-27
- Power Plant Restoration Project in Serbia2018-08-17
- Van Leeuwen in Middle East Come to Visit Us2018-08-07
- Haihao Group attended the 4th INDONESIA TUBE & PIPE EXPO 20182018-07-30
- Haihao Group offer excellent piping solutions for sewage treatment project in Iraq2018-07-25
- BV Test2018-07-16
- Haihao Group will attend 11th International Tube Pipe Trade Fair2017-09-08
- ASTM A350 LF2 steel material2017-07-04
- How to use the ASTM A350 LF2 flanges?2017-06-12
- What is ASTM A350 LF2 flange?2017-06-09
- ASTM A105 Steel Grade Material2017-05-04
- The difference between ASTM A105 flange and A105N flange2017-05-03
- What is ASTM A105N flanges?2017-05-02
- Japan start Anti-dumping investigation to butt welding pipe fittings from China and South Korea2017-04-24
- Haihao is producing the forged steel blind flanges for Iran oil projects2017-04-19