• The application and advantage of butt welding pipe fittings2021-11-05
• What is butt welding pipe fittings?2021-11-05
• What’s butt welding mean?2021-11-05
• What is Lap Joint Flange?2021-11-05
• Haihao showed piping products in 21th Iran Oil & Gas show2021-11-05
• Haihao steel piping exporting department finish order production for Dubai client.2021-11-05
• What is a weld neck flange?2021-11-05
• What is a lap joint flange/loose flange?2021-11-05
• The 21th Iran oil show is started in Tehran2021-11-05
• Hebei Haihao Group is looking for translator for Iran Oil Show2021-11-05
• Haihao Group will attend IRAN Oil Show 20162021-11-05
• The information for coated and insulated steel pipe products2021-11-05
• Hebei Haihao Group will attend Pakistan HVACR Society Exhibition2021-11-05
• What is the function of olet fittings?2021-11-05
• The Threaded Pipe Fittings of Hebei Haihao Group2021-11-05
• The Socket weld Elbow Fittings of Haihao Group2021-11-05
• The roles and function of Flange Gasket2021-11-05
• The advantage of Haihao pipe fitting and flange manufacturer-22021-11-05
• The advantage of Haihao pipe fitting and flange manufacturer-12021-11-05
• The Quality Polity about pipe fitting and flange products in Haihao2021-11-05