Detailed Introduction To ASME/ANSI B16.9 Butt Welded Pipe Fittings

　　In the pipeline system, ASME/ANSI B16.9 butt welded pipe fittings are pressure pipeline components used to change the direction or diameter of the pipeline, branch the pipeline and achieve special connections in production equipment such as petrochemical industry and electric power. ANSI B16.9 Buttweld 90 Degree Long Radius Carbon Steel Pipe Fitting Elbow is a kind of pressure pipeline component that is welded Pipe fittings that cannot be connected to steel pipes, especially suitable for long pipelines and pipelines that do not require frequent disassembly. Because the flow direction and flow area of the medium change at its installation position, the internal and external stresses it receives are relatively complex. Therefore, the quality grade of the ANSI B16.9 Buttweld 90 Degree Long Radius Carbon Steel Pipe Fitting Elbow directly affects the safe and stable operation of the entire pipeline system.

　　They are available in various product types such as ANSI B16.9 Buttweld 90° elbow, ANSI B16.9 Buttweld 45° elbow, ANSI B16.9 Buttweld tee , ANSI B16.9 Buttweld cross, ANSI B16.9 Buttweld pipe cap, ANSI B16.9 Buttweld concentric reducer, ANSI B16.9 Buttweld eccentric reducer, ANSI B16.9 Buttweld nipple. The company's products of this type all comply with ASTM A403 and ASTM A234 standards. ANSI B16.9 Buttweld 90 Degree Long Radius Carbon Steel Pipe Fitting Elbow are mainly suitable for high-pressure pipelines, equipment with precise size requirements, and other high-pressure pipes that require high pressure in petrochemical industry, medicine and health, electric power, aerospace, military industry, fire protection, metallurgy, shipbuilding, gas, nuclear power, and environmental protection. field.

　　Butt welding pipe elbows are divided into 45°, 90° and 180°. 90° elbows and 180° elbows can be divided into long radius and short radius according to the curvature. 45° has only long radius but no short radius. The long radius elbow refers to its radius of curvature equal to 1.5 times the outer diameter of the steel pipe, that is, R=1.5D. A short radius elbow means that its radius of curvature is equal to the outer diameter of the pipe, that is , R=1.0D. (D is the diameter of the elbow, and R is the radius of curvature. D can also be expressed in times.) The factory can also customize 60° or other abnormal angle elbows according to customer (engineering) needs. The main (most commonly used) connection methods with steel pipes include direct welding, flange connection, threaded connection and socket connection.

　　If divided by pressure level, there are about seventeen types, including: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS, among which The most commonly used ones are STD and XS.

　　The production standard for butt welded pipe fittings is ASME B16.9. The standard outer diameter size ranges from 1/2" to 80". Generally, seamless steel pipes are used as raw materials within 24", and seamless steel pipes are used as raw materials for 26"-80". The steel plate is stamped and then welded. The maximum wall thickness can be 60mm and the minimum is 1.24mm. The most commonly used steel types are carbon steel, alloy steel and stainless steel.