Tianjin Lefin Industrial Co., Ltd is one of the most experienced manufacturers and suppliers of hot dip galvanized hollow section in China. Please feel free to buy high quality hot dip galvanized hollow section from our factory. Good service and reasonable price are available.
Hot dip galvanized Hollow section
Hot dip galvanized Square tube
Hot dip galvanized Rectangular tube
Pre galvanized square tube
Pre galvanized rectangular tube
Hot dipped galvanized Hollow section is the main structural material in construction like bridge building, electricity tower, advertisement pole, underground water transfer, roof structure. It will be manufactured by ERW & HFW. The fabrication process by hot dipped zinc coating thickness is 220g/m2-650g/m2, The main advantage is the zinc coating will be the big thickness, anticorrosive is good. Normal usage validity time will be around 25-50 years. The pipe can be used in adverse environment, like strong acid, wet, high temperature etc. Also it can be thread and coupling at the two ends the standard are ASTM A53 and BS1387 EN10255 EN10219.
Production Process
1: Inspection Raw material in site
2: Open Coil and Joined welding
3: Continuous ERW or HFW welding
4: Cutting
5: End and welding inspection
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