Products
- 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
- China’s anti-dumping deposit for stainless steel imports unlikely to shake market2019-04-01
- Daily maintenance methods of steel pipes and pipe fittings2019-03-29
- A good chance for your piping products order2019-03-28
- 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
- Pipe elbow vs pipe bend2019-03-15
- Advantages and disadvantages of cold drawing and hot rolling2019-03-13
- The difference between hot-rolled and cold-rolled seamless pipes2019-03-12
- How to distinguish hot rolled and cold rolled seamless steel pipe?2019-03-11