News
- What is butt welding pipe fitting?2016-07-05
- What is the meaning of butt welding?2016-06-23
- Haihao Group showed piping products in 21th Iran Oil & Gas show2016-06-21
- Haihao Group finished Africa pipeline project products2016-06-20
- What is a barred tee (pigged tee)?2016-06-16
- Haihao Group finished the pipe fitting production for Dubai project2016-06-15
- What is a weld neck flange?2016-05-25
- Why we use the lap joint flange (Loose flange)?2016-05-18
- What is a lap joint flange(loose flange)?2016-05-13
- The 21th Iran oil show is started in Tehran2016-05-05
- What is a tube sheet (tubesheet) for heat exchanger?2016-04-27
- Haihao Piping Group presented at CIPE & CIPPE Beijing2016-04-25
- Hebei Haihao Group is looking for translator for Iran Oil Show2016-04-12
- Haihao Group will attend 21st Iran International Oil,Gas,Refining,Petrochemical Exhibition2016-04-08
- Haihao Group carried annual verification of CE(PED) certification2016-03-18
- Hebei Haihao Group and Wavin Group work together to support Pakistan piping system market2016-03-11
- What is A234 WPB steel pipe fitting?2016-02-26
- Quality inspectors of Haihao Group do pipe fittings X-ray testing in holiday2016-02-23
- What is the type of pipe tees?2016-02-16
- Hebei Haihao Group will attend Pakistan HVACR Society Exhibition2016-01-13