Large-diameter flange, flange Factory Cangzhou, Cangzhou City, Long Ze Pipe Sales Co., Ltd. (Diao Yawen 0317 -8230272 18731744075) production flange, forged flange, steel flange rolling, flange splice plate cutting, large diameter roll Flanges, flange rolling billboard, non-standard flanges, high pressure flange, flange thick-walled, low-voltage large-diameter flanges, flat welding flange, welded flange, carbon steel flanges, stainless steel flanges, alloy steel flanges, to produce the national standard, non-standard, non-type flange, flange, etc. ... Our products are up to diameter of 6000mm.