Carbon Steel Backing Rings
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              Carbon Steel Backing Rings, Hot dip galvanized
              ANSI CL150 Backing Rrings
              Material:  Carbon Steel ASTM A36
              SizeSDR7/11 1”~80
                          
              DIN/ EN Backing Rings
              Material: Carbon Steel S235
              Size:DN25~3000  PN10/16
              Coated : Antirust Paint, Epoxy Paint,Fustion bound epoxy paint, hot dip galvanized, PP covered

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