Carbon steel welded flange welded flange manufacturers how to choose? Hebei Thai Extension pipes quality prove to you, our company is a high reputation in North China large flange production enterprises, with flange production line 6 and a professional physical and chemical detection equipment, professional technology, excellent service is your wise Select, our company has achieved ISO9000 API pressure piping components and many other flange patent certificates, professional production equipment, improve the quality management system, quality of service is a trusted manufacturers large flange. Carbon steel flange of another layer of meaning is: according to the national standard dimensions, tolerances and other production of flange, different from the standard sizes not produced, also known as two standard flange piece flange (someone called non-standard method Portland is incorrect), usually some unscrupulous businesses will reduce the flange thickness, diameter size to achieve the purpose of saving the two materials, as well as with scrap steel or scrap steel processing flange, generally this steel chemical composition and Mechanical properties of non-compliance of the waste or, worse, with black steel flange private steel production, steelmaking technologies such private use of obsolete steelmaking can not guarantee the mechanical properties and weldability, there may not be time to use and pipe welding, or steel itself has cracks, holes and other leaks will go up after welding. So try to use the time of purchase flange steel flange. Wind Nuclear special welded flange, a circular annular flange products; intermediate flange back of the product for the boss shape, front flange intermediate truncated conical; frustoconical head product was a short cylindrical shape, short cylindrical head arranged chamfered; flange surrounding the product is provided with a plurality of axial flange bolt holes. Because this product clamping surface with bosses and frustoconical configuration, when the cold deformation of the flange by only certain deformation, and the pressing surface is not affected, the seal is not easy deformation aging, use of time more long-term, it can be particularly Wind nuclear power to meet the special flange for strength and weather resistance welding needs. Wind Nuclear undertake special welding flange, wherein: the product of a circular ring flange, flange back of the product in the middle of the flat projection shape, front middle of the fillet with a boss shape, flange center hole sink hole; flange surrounding the product is provided with a plurality of axial flange bolt holes. Because this product clamping surface with the boss structure, when the cold deformation of the flange by only certain deformation, and the pressing surface is not affected, the seal is not easy deformation aging, use of time more long-term, it can be especially wind power nuclear power to meet the special flange for strength and weather resistance welding needs.