News
- Haihao Group got the certification of five classification societies2022-11-21
- Haihao Group was invited to attend the 2022 SSNAME Academic Conference2022-11-15
- tube sheet inspection2022-11-09
- Sembcorp won the FPSO project again2022-11-04
- Haihao Group will attend the 2022 China Marine Economic Expo in November2022-11-02
- Shipment of flanges for Brazilian customers2022-10-26
- Indonesian customer flange quality inspection2022-10-18
- Ultrasonic testing of flanges2022-10-13
- Loading and delivery of large diameter flange2022-10-10
- Kammprofile gasket with graphite layer were finished2022-10-08
- Introduction of Kammprofile Gasket 2022-09-29
- Iranian customer ordered reducing slip on flange2022-09-26
- Types of reducing flange2022-09-21
- Advantages of Haihao’s high pressure flange2022-09-14
- Something about HIC & SSC double antibody test2022-09-02
- Flange supply of HAFAYA project2022-08-30
- About the service of providing flange product test blocks2022-08-26
- Blue Butterfly Valve Flange2022-08-24
- KAMMPROFILE GASKET WITH GRAPHITE LAYER2022-08-22
- Non standard flat welding flange2022-08-08