Butt welding flange with neck is one of our common pipe fittings. It refers to a flange with a neck and a pipe transition and a pipe butt weld connection. Butt welding flange is not easy to deformation, good sealing, widely used, there are corresponding rigid and elastic requirements and reasonable butt welding thin transition, welding distance from the joint surface, joint surface from welding temperature deformation. The sealing surface of butt welding flange is generally convex (RF), concave FM convex M, tenon groove type is not commonly used. Butt welding flanges are suitable for pipelines with large fluctuation of pressure or temperature or pipelines with high temperature, high pressure and low temperature, as well as pipelines for conveying petroleum, chemicals, inflammable and explosive media. Butt welding flange flange and pipe connection using welding method for butt welding, weld and pipe and pipe welding similar, generally small diameter of the use of argon arc welding bottom, manual welding cover, large diameter of the use of double-sided welding.
Size: 1/2" ~24" (DN15~DN600)
Pressure: Class 150lbs ~2500lbs;PN6,PN10,PN16,PN25,PN40;5K,10K,20K;
Flange surface: RF, FM, M, T, G, FF, RJ
Manufacturing standards: ANSI B16.5,ASME B16.47,JIS B2220,EN1092-1,BS4504,GB/T9119,
HG/T20592,DIN2502/2503/25727/2565/2566/2573/2576/2632~2638/86029/86030,AS2129,GOST 12821;
Materials: ASTM A182 F304,F304L,F316,F316L,F310S,F321,F347,0Cr18Ni9, 0Cr17Ni12Mo2,1.43011.4404,1.4306,1.4404;S31803,S32205,S32750,S32760,904L;
Marking: Logo, product name, size, standard, pressure, material, heat number (can be marked according to customer requirements);
Surface treatment: Oil cleaning or pickling;
Packing: Plastic cover on the back of flange - bubble bag - wooden case or pallet; Can also be customized according to customer requirements packaging.
Application: Chemical industry, petroleum, paper making, shipbuilding, electric power, biological engineering, natural gas, water treatment, construction, boiler, pharmaceutical, food and other fields;
Product advantages:
1, Corrosion resistance;
2, Long service life;
3, Low resistance flow;
4, Environmental protection;
5, Easy for installation;
6. Low comprehensive cost;