• Haihao Flange Factory Finished High Pressue and Large Size Flanges On Time2021-11-09
• Haihao Group finished the 50D radius pipe bends used for steel structure2021-11-09
• Client Inspect Tube Sheets Quality and Production In Haihao Group2021-11-09
• Hebei Haihao Group is working hard to finish orders before Chinese New Year2021-11-09
• The tolerance about JIS B2220 flange products2021-11-09
• What are JIS B2220 flanges products?2021-11-09
• The introduce of JIS B2220 products2021-11-09
• Haihao Flange Factory finished the custom flanges order2021-11-09
• How to reduce the risk of intergranular corrosion and test it2021-11-09
• The standards and methods for intergranular corrosion test2021-11-09
• What is intergranular corrosion in metal material?2021-11-09
• SGS carried out Intergranular Corrosion Test to stainless steel elbows of Haihao Factory2021-11-09
• Hebei Haihao technical department communicates with JOINTECH Pakistan2021-11-09
• Hebei Haihao Group finished the IBR certificated steel pipe fittings2021-11-09
• 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