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High - frequency Electric Resistance Welded Steel Weld Longitudinal Wave Defect Detection
Because testing standards, testing equipment, testing methods and the ultrasonic probe, limit reference block of the high frequency electric resistance welded steel pipe manufacturing, there are still a large number of longitudinal defects undetected problems during installation. In this paper, ultrasonic testing methods, testing equipment, ultrasonic probe, test block, etc.…
By:  in  Business  >  Construction Industry   May 18, 2016  
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Co2 Weld Pipe Forming Side
CO2 gas welding and assembly of bevel form of more stringent requirements. Butt weld groove forms and dimensions include angles, blunt edges and assembly space. Bevel angle mainly affect whether the arc can penetrate to the root of the weld, so that the root penetration, and then get a good…
By:  in  Business  >  Construction Industry   May 16, 2016  
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Lsaw Pipe Production Line Pre - bending Process
Pre-bending is a major step LSAW steel pipe production line, and its purpose is to complete both sides of the plate pre-bending, bending radius on both sides of the steel sheet at or near the radius of the tube production specifications, thus ensuring the pipe weld area geometry and dimensional…
By:  in  Business  >  Construction Industry   May 10, 2016  
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Weld Reinforcement Control Of Ssaw Steel Pipe
Evaluation of ssaw steel pipe welding quality, first look inside and outside weld reinforcement and shape control how well the weld line is structured flow. Weld reinforcement tall and not too smooth transition, the weld toe stress concentration coefficient large against SCC unfavorable. In addition, the external weld reinforcement tall,…
By:  in  Business  >  Construction Industry   May 09, 2016  
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Common Defects And Prevention Of Spiral Welded Seam
Pre-finish welding technology is a thick-walled large-diameter spiral welded pipe production of oil and gas pipelines in the more advanced technology. The first step in the use of pre-finish welding production of spiral welded steel strip after the molding machine in continuous gas shielded arc welding welding. Tube after welding…
By:  in  Business  >  Construction Industry   May 05, 2016  
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Basic Principles Of Spiral Submerged Arc Welded Pipe Forming
Spiral welded seam is to produce a large-diameter steel pipe is very cost-effective method. In recent years, the annual output of welded steel pipes 65% of annual production. The annual production of spiral seam welded steel pipe accounts for about 5-10% of annual production, plays an important role in the…
By:  in  Business  >  Construction Industry   May 03, 2016  
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Analysis And Adjustment Of ERW Units
Fault welding machine is relatively more, and the cause of the failure is also more complex, the result is often caused by a variety of reasons, can be caused by several reasons or a result. Tube welding machine appeared scratches caused mainly by two parts, one guide means, and second…
By:  in  Business  >  Construction Industry   Apr 29, 2016  
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Longitudinal Welded Pipe Technology on Performance Of Transverse Tensile Steel
The so-called package Singh effect refers to polycrystalline metal is pre-loaded to produce a small amount of plastic deformation (1% to 4%) after uninstalling, then if the same load, the elastic limit rises, the reverse of the elastic limit decline; but if the material pre-deformation is too large (> 4%),…
By:  in  Business  >  Construction Industry   Apr 28, 2016  
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Longitudinal Bending Roll Forming
As online IF normalizing process matures, Longitudinal production growing to large size, thick walls, high grade direction, in some industries were previously part of the lsaw steel pipe, such as automotive transmission pipe, pressure boiler pipe, oil casing, oil and gas feed pipe, high-grade, high-quality large-scale Longitudinal is being adopted…
By:  in  Business  >  Construction Industry   Apr 27, 2016  
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High - frequency Electric Resistance Welded Longitudinal Wave Defect Detection
Due to testing standards, testing equipment, testing methods and the ultrasonic probe, limit reference block of the high frequency electric resistance welded steel pipe manufacturing, there are still a large number of longitudinal defects undetected problems during installation. Suppose the detection pipe itself is stationary, close to the outer surface…
By:  in  Business  >  Construction Industry   Apr 26, 2016  
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  Likes: 0

High - frequency Electric Resistance Welded Steel Weld Longitudinal Wave Defect Detection
Because testing standards, testing equipment, testing methods and the ultrasonic probe, limit reference…
Co2 Weld Pipe Forming Side
CO2 gas welding and assembly of bevel form of more stringent requirements. Butt weld groove forms and…
Lsaw Pipe Production Line Pre - bending Process
Pre-bending is a major step LSAW steel pipe production line, and its purpose is to complete both sides…
Weld Reinforcement Control Of Ssaw Steel Pipe
Evaluation of ssaw steel pipe welding quality, first look inside and outside weld reinforcement and…
Common Defects And Prevention Of Spiral Welded Seam
Pre-finish welding technology is a thick-walled large-diameter spiral welded pipe production of oil…
Basic Principles Of Spiral Submerged Arc Welded Pipe Forming
Spiral welded seam is to produce a large-diameter steel pipe is very cost-effective method. In recent…
Analysis And Adjustment Of ERW Units
Fault welding machine is relatively more, and the cause of the failure is also more complex, the result…
Longitudinal Welded Pipe Technology on Performance Of Transverse Tensile Steel
The so-called package Singh effect refers to polycrystalline metal is pre-loaded to produce a small…
Longitudinal Bending Roll Forming
As online IF normalizing process matures, Longitudinal production growing to large size, thick walls,…
High - frequency Electric Resistance Welded Longitudinal Wave Defect Detection
Due to testing standards, testing equipment, testing methods and the ultrasonic probe, limit reference…