1. Suitable welding rods for steel pipe fittings made of A105: structural steel welding rods, such as J426 and J427 welding rods.2. A105 is the American ASTM standard number, and A stands for ordinary carbon structural steel. Standard name: Carbon steel forgings for pipe parts. Because this standard

Flattening and reducing deformation: The billet tube head contacts the tapered roller in the cantilever state and moves forward under the action of friction. At this time, the blank tube is only in contact with the roll and not on the plug. The deformation is mainly flattened and reduced in diameter

Application scope of plastic coated steel pipe(1) Coal mine systemPipe networks for underground mine water supply and drainage, fire sprinklers, underground shotcrete, positive and negative pressure ventilation, and gas drainage.(2) Heating network water delivery systemUnderground heating network wa

Product name: ERW Steel PipeStandard: ASTM A53Size: 450NB X 12mApplication: Industrial energy construction project