Company News
- Haihao Group specializes in the production of customized pipeline products2020-02-06
- Pipe fitting and flange products shipped out for Egypt Project2020-01-28
- Heat treatment and storage of stainless steel head2020-01-16
- Precision tube order from GPC2020-01-15
- MITERED ELBOWS UNDER AWWA C2082020-01-13
- Butt welding pipe fittings order for Project from Korea2020-01-03
- Inspection of big sizes elbows2019-12-26
- What is press forging process?2019-12-17
- What is closed die forging?2019-12-10
- What is open die forging?2019-11-25
- Advantages and disadvantages of hot rolling2019-11-21
- Difference between hot forging,warm forging and cold forging2019-11-18
- What is warm forging process?2019-11-14
- What is cold forging process?2019-11-04
- What is hot forging process?2019-10-29
- Forming process of marine reducer2019-10-17
- Introduction of marine reducer2019-10-16
- Functions of electrode coating2019-10-14
- Manual arc welding (SMAW)2019-10-08
- Marine extrusion elbow and butt welding elbow2019-09-27