Company News
- What is intergranular corrosion in metal material?2016-10-31
- SGS carried out Intergranular Corrosion Test to stainless steel elbows of Haihao Factory2016-10-28
- 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 Hebei Haihao Pipe Fitting Group2016-10-24
- How the steel pipe fittings get approved Indian Boiler Regulations Certificate?2016-10-20
- 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’s China Tube Exhibition?2016-10-11
- What’s non-destructive testing (NDT)?2016-10-09
- Haihao Group attend the China International Tube&Pipe Industry Trade Fair2016-09-29
- Spectacle blind flanges,ring spacers and paddle flanges are finished in Hebei Haihao2016-09-26
- Hebei Haihao Group finished supplement flange order2016-09-23
- Technical specification of spectacle blind flange2016-09-19
- How to use a spectacle blind flange?2016-09-18
- Types of spectacle flanges2016-09-14
- The meaning and type of steel pipes2016-09-05
- The advantage of pipe grooved ends joints2016-09-05