Cangzhou City, Long Ze Pipe Sales Co., Ltd. (Diao Yawen 0317 -8230272 18731744075) specializes in producing large-diameter flange, non-standard flange, large diameter non-standard flange, galvanized flange, large diameter flange rolling, large-diameter mosaic flange, square flange, square large-diameter flange, small-caliber forged flange, the national standard flanges, large diameter flange factories, large-diameter flange Factory, Hebei, Cangzhou large-diameter flange plant, high pressure flange, large diameter low pressure flange, forged flange, flat welding flange, welded flange, carbon steel flanges, stainless steel flange, steel flange, to produce the national standard, non-standard, non-type flange, flange, etc. ... old-standard flange, the new standard flange, material: carbon steel, alloy steel, stainless steel, 16mn, 20r, and other special materials, other goods adjustable flange gasket, asbestos gasket, rubber gasket, large-diameter rubber pieces, screws, clear price advantage, welcome to visit our factory, call us.