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Hot Rolled ERW Steel Pipe Price June 16th 2021
API 5L/ASTM A53 GR.B (Hot Rolled ERW Steel Pipe) Outside Diameter Wall Thickness FOB TIANJIN Outside Diameter Wall Thickness FOB TIANJIN 外径 (mm) 壁厚 (mm) 离港价 USD/TON 外径 (mm) 壁厚 (mm) 离港价 USD/TON 219、245 5.0-11.75 962.76 426 5.75-11.75 986.38 273 5.0-11.75 962.76 ...Read more -
Hot Expanded ERW Steel Pipe Price June 16th 2021
API 5L/ASTM A53 GR.B (HOT EXPANDED ERW STEEL PIPE) Outside Diameter Wall Thickness FOB TIANJIN Outside Diameter Wall Thickness FOB TIANJIN 外径 (mm) 壁厚 (mm) 离港价 USD/TON 外径 (mm) 壁厚 (mm) 离港价 USD/TON 245, 273 5.0-9.28 954.88 450, 457, 508, 530 6.5-11.98 1022.60 ...Read more -
How to deal with the oxide scale of sanitary stainless steel pipe
There are mechanical, chemical, and electrochemical methods to remove the oxide scale of sanitary stainless steel pipes. Because of the complexity of the oxide scale composition of sanitary stainless steel pipes, it is not easy to remove the oxide scale on the surface, but also to make the surfac...Read more -
What is the difference between cold drawn steel pipe and hot rolled steel pipe
(1) The difference between hot working and cold working: hot rolling is hot working, and cold drawing is cold working. The main difference: hot rolling is rolling above the recrystallization temperature, cold rolling is rolling below the recrystallization temperature; cold rolling is sometimes he...Read more -
How to Unblock the Gathering and Transportation Wax Condensation Buried Oil Pipeline in Winter
The hot water sweeping method can be used to remove the blockage: 1. Use a 500 or 400 pump truck, 60 cubic meters of hot water at about 70 degrees Celsius (depending on the pipeline volume). 2. Connect the wire sweeping pipeline to the wire sweeping head. The pipeline should be firmly connect...Read more -
Anti-corrosion treatment of ductile iron pipe
1. Asphalt paint coating The asphalt paint coating is used to transport gas pipelines. Preheating the pipe before painting can improve the adhesion of the asphalt paint and accelerate the drying. 2. Cement mortar lining + special coating This kind of internal anti-corrosion measure is suitable ...Read more