The commonly used buckle types of tubing are divided into three types: EU, NU and NewVam.
These three types of buckles can be found in the tool shop. The EU and NU are difficult to distinguish from the appearance of the buckles. They are all triangular buckles, but they can be easily distinguished from the entire column. NU means no external thickening.
Special buckled casing pipe buckle characteristics: (1) coupling, variable buckle joint strength - with coupling connection. (2) High thread connection strength - trapezoidal thread (8 teeth per inch of tubing thread, 5 teeth per inch of casing thread) (3) Excellent airtight performance of threaded connection - Bimetal sealing structure, good stress concentration reduction Sealed. (4) Reduce eddy currents and erosion of the pipe wall - smooth transition of the inner hole, improve flow efficiency and reduce erosion. (5) The anti-gluing performance of the thread is good.
Buckle VAM series special buckle: VAM FJL special buckle in the buckle, which is developed by Valoric, France. Features of VAM FJL: 100% internal and external flat joints provide strength clearance for liners, medium depth casings and reduced borehole tubing strings. Uses: Suitable for tubing, casing, short-circuit, coupling, variable-thread connection. Advantages: Increase air tightness and make the connection more tight. Our company can process high-sealing thread VAM series similar buckle thread, Hydril similar buckle series thread, drill pipe thread IF, REG, NPT thread, American standard thread, British standard thread and all kinds of left-hand thread (reverse buckle).
VAM series special buckle introduction: VAM special buckle is developed by Valeric, France, its thread type is sealed cone facing cone, reverse angle 15 shoulder. The use characteristics are easy to process, simple and practical, reliable performance, and its application is wide, and the usage is the first among all kinds of special buckles. The NEW VAM special buckle is developed and formed by the French company Valerick, and special buckles such as VAM ACE, VAMS, VAMHW can be adapted to different service conditions. The VAM TOP special buckle is jointly developed by Valoric of France and Mannesmann of Germany. It has excellent performance, high joint strength and good sealing effect. It is currently a special buckle with high quality. Our company can process VAM series similar buckle thread, NEW VAM similar buckle thread, VAM TOP similar buckle thread, VAM FJL similar buckle thread, VAM TOP HC similar buckle thread, VAM TOP HT similar buckle thread, NEW VAM TOP similar buckle thread, VAM ACE is similar to the thread. Can be processed by materials, processed according to drawings, and processed in one piece.
What are the precautions for storing seamless steel pipes?
1. Choose a suitable venue and warehouse; 2. Reasonable stacking, advanced first; 3. Packaging and protective layers of protective materials; 4. Keep warehouse clean and strengthen material maintenance.
Significance of Proximity Effect on the Production of High-frequency Longitudinal Welded Pipes
In addition to the skin effect, the proximity effect is another feature of current. When alternating currents of equal magnitude and opposite directions pass through two adjacent conductors, the current will flow through the adjacent inner surface layers of the two conductors, and when the two conductors pass When alternating currents of the same size and direction, the current will flow through the outer surface layers of the two conductors. The proximity effect of the current makes the current in the conductors further uneven. It is this unevenness that makes the high-frequency welded pipe(ERW).
Summary of Advantages and Disadvantages of High-Frequency Welded Pipe Forming Methods
Advantages and disadvantages of high-frequency welded pipe forming methods
