Company News
- Hebei Haihao technical department communicates with JOINTECH Pakistan2016-10-27
- Hebei Haihao Group finished the IBR certificated steel pipe fittings2016-10-26
- The IBR certificate approving process in Haihao Pipe Fitting Group2016-10-24
- Haihao Group showed products in Tube China 20162016-10-19
- Tube China Fair 2016 was held in Shanghai 25th September2016-10-18
- NDT test methods used for piping products2016-10-17
- NDT application in steel pipe fittings manufacturing2016-10-14
- What is Tube China Exhibition?2016-10-11
- What is Non-destructive Testing(NDT)?2016-10-09
- Hebei Haihao Group attend Tube China 20162016-09-29
- Spectacle blind flanges,ring spacers and paddle flanges are finished in Haihao Group2016-09-28
- Haihao Group finished spectacle blind flange order2016-09-26
- Technical specification of spectacle blind flange2016-09-21
- How to use a spectacle blind flange?2016-09-19
- Types of spectacle flanges2016-09-18
- Advantage of pipe grooved ends joints2016-09-08
- The usage of pipe grooved ends joints2016-09-05
- The meaning and type of steel pipes2016-09-05
- What is a bevel end?2016-09-02
- The pipe end type of steel pipes and pipe fittings2016-08-24