News
- Hebei Haihao Group will attend the 8th Tube China2018-08-28
- What are threaded/screwed flanges?2018-08-27
- Haihao Group pipe fittings and flanges used for power plant restoration project in Serbia2018-08-17
- Van Leeuwen in Middle East come to visit us2018-08-07
- HRSG Project of SamsungGroup in Qatar2018-08-07
- Haihao Group attended the 4th INDONESIA TUBE & PIPE EXPO 20182018-07-27
- Haihao Group offer excellent piping solutions for sewage treatment project in Iraq2018-07-25
- Cooperation with Van Leeuwen for Egypt Project2018-07-23
- What is elbow and bend?2018-07-16
- The difference between pipe bend and elbow2018-07-16
- BV test butt weld fittings and flanges in Haihao Group2018-07-16
- Packing type of flange,pipe fitting and steel pipe2018-07-16
- ASME B16.9 ASTM A403 WP316L 90° Pipe Bend 3D2018-07-09
- Annealing process in the pipeline2018-06-29
- Port congestion for Cat Lai of Vietnam2018-06-26
- What is cement lining for pipe fittings?2018-06-26
- Steel price will drop next week2018-06-25
- Impact test of EN10204 for German order in Haihao Group2018-06-15
- What is impact test for pipe fitting?2018-06-14
- What is pipe fittings’ hardness test?2018-06-13