• The IBR certificate approving process in Hebei Haihao Pipe Fitting Group2021-11-09
• How the steel pipe fittings get approved IBR certificate?2021-11-09
• Tube China Fair 2016 was held in Shanghai 25th September2021-11-09
• NDT application in steel pipe fittings manufacturing2021-11-09
• Hebei haihao group show products in Tube China 2016 in ShangHai2021-11-09
• What is Tube China Exhibition？2021-11-09
• What is Nondestructive Testing (NDT)?2021-11-09
• USITC research the antidumpling duty on carbon steel butt weld pipe fittings from China and other co2021-11-09
• Spectacle blind flanges,Ring Spacers and paddle flanges are finished in Haihao Group2021-11-09
• Hebei Haihao Group finished supplement flange order2021-11-09
• Technical specification of spectacle blind flange2021-11-09
• How to use a spectacle blind flange?2021-11-09
• Types of spectacle flanges2021-11-09
• The advantage of pipe grooved ends joints2021-11-09
• The usage of pipe grooved ends joints2021-11-09
• What’s a bevel end?2021-11-09
• Pipes and fittings ends in piping system joint2021-11-09
• The pipe end type of steel pipe and pipe fittings2021-11-09
• Advantages and Disadvantages of Socket Weld Pipe Fittings2021-11-09
• What Is Socket Weld Pipe Fittings?2021-11-09