Company News
- What is eddy current testing?2019-04-19
- Principles and advantages and disadvantages of radiographic inspection2019-04-18
- Introduction to radiographic testing2019-04-17
- Haihao Group in NEFTEGAZ 20192019-04-16
- Sand blasting on carbon steel pipe fittings2019-04-15
- What is hydrostatic test?2019-04-14
- The difference between pigmentation penetrant inspection and fluorescence penetrant inspection2019-04-12
- Introduction of penetrant testing-PT or DPI or LPI2019-04-11
- How to select the material for magnetic particle inspection2019-04-10
- The process of magnetic particle testing2019-04-09
- The process of ultrasonic nondestructive testing used for pipeline2019-04-08
- Haihao Group fix a equal tee for customer from Kuwait2019-04-04
- Introduction of anti-corrosive coated steel pipe and fittings2019-04-03
- Introduction of large diameter pipe elbow2019-04-02
- Daily maintenance methods of steel pipes and pipe fittings2019-03-29
- Haihao Group will attend NEFTEGAZ 20192019-03-22
- Types of ellipsoidal heads-HHA, EHA, EHB, THA, THB, SDH2019-03-21
- The difference between the ellipsoidal head and pipe cap2019-03-20
- How to determining bolt grade-Grade 2,Grade 5,Grade 82019-03-19
- What is the difference between pipe bend and pipe elbow2019-03-18