Hebei Bohai Tube Co., Ltd. specializes in producing carbon steel elbow 20. Buy 20 carbon steel elbow went to Hebei Bohai Sea. About 90 degree elbow welded steel precautions hot topic, people's opinions differ, I steel elbow | GB elbow manufacturer with years of rich experience in production of welded carbon steel elbow GB Note this topic has its own unique Road opinion, the following is the topic of our own point of view of marine 20 # carbon steel elbow, I hope you can help. 1, in order to prevent carbon steel elbow because of heat generated between the eyes erosion, welding current is not too large wholesale 20 # carbon steel elbow, less than about 20% carbon steel electrode, the arc should not be too rapid cooling between layers 20 # carbon steel elbow to narrow weld appropriate. 2, after welding steel 90 degree elbow sclerosing large, easy to crack. The use of the same type after stamping elbow welding, it is necessary carry out more than 300 ℃ preheating and welding slow cooling treatment 700 ℃ about. If the weldment after weld heat treatment is not possible. Carbon steel welding rod should be used elbow. Material from steel elbow include: carbon steel, alloy steel, stainless steel, copper, aluminum ,,,, points from the production process, including: stamping, push the system, butt, forged from the specification points ,,,, include: 90 degrees, 45 degrees, 180 degrees, 1D, 1.5D, 2D, 2.5D, 3D ,,,,, from use Category include: high pressure elbow, low elbow, elbow thick, welded elbow seamless seamless, straight seam elbow, adjustable elbow, elbow chicane across elbow, socket elbow, elbow trenches, concrete pump elbow, wear elbow, elbow insulation, corrosion bend head, sanitary elbow, wholesale 20 # carbon steel elbow, 20 # carbon steel elbow, Cangzhou Bohai provided by Cangzhou Bohai Pipe Limited. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.com) (www.hbbh628.com) strong, credible, and other industries in Hebei Cangzhou tee accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Cangzhou Bohai and you hand into the brilliant, for a better future!