Why Lsaw Steel Pipe Is More Suitable For Long - Distance Pipeline
Join 1000's of Authors at StreetArticles Today!

Why Lsaw Steel Pipe is More Suitable for Long  -  distance Pipeline

LSAW steel pipe is more suitable for long-distance pipeline

For large-diameter, high delivery pressure, long-distance transmission pipe, the forming and welding process is very critical. In terms of the production process, the welded steel pipe can be divided into ERW steel pipe (Electric Resistance Welding), SSAW steel pipe (spiral submerged arc welding) and LSAW steel pipe. Although electric resistance welded steel pipe developed rapidly recently, but is still a pipe of small diameter.

Currently, large-diameter pipe still produced by LSAW and SSAW processes.

Spiral welded tube is using hot rolled strip coil as tube billet, spiral shaping, and then using submerged arc welding into a tube. However, there is a certain defects in the process of spiral submerged arc welding, mainly in the weld, the weld length is longer than the LSAW steel pipe welds, which means the chance of weld defects appearing is significantly higher. Moreover, spiral welded pipe forming and welding at the same time, so that the weld quality assurance is not easy. In addition, spiral welded pipe production line does not have a full tube flaring process, resulting in the presence of a large residual stress pipe. In contrast, the LSAW steel pipe can adapt to the development direction of the long-distance pipeline, has certain advantages.

Although UOE unit and JCOE crew can both produce LSAW steel pipe, from the unit's products and features point of view, they still differ. The main features of modern UOE unit performance is "O" machine has the function of compression tube, the general compression rate can reach 0.4% ~ 0.6%, and thus "O" machine is with a lot of pressure. The purpose of compression is to be able to more thoroughly eliminate residual stress, and stress is more evenly distributed, compressive ulcer better. However, many units of domestic UOE can not reach this level. JCOE unit even though can do flaring, it has no the function of compression, so the residual stress is larger than some UOE unit. For SSAW steel pipe, since there is no full-body mechanical expanding, it's with larger residual stress

The invention of JCOE crew simplifies the UOE process equipment and reduces the investment costs. Equipment investment of JCOE unit generally needs 400 million yuan to 500 million yuan. Craft essence "JCO" is repeatedly bending forming, and then rely on "E" step (expanding) to make it a round, the through the whole round machine to achieve the size requirements.

In contrast, JCOE unit is more suitable for low-volume, multi-species (specification) production, and UOE unit is more suitable for high-volume, single species (specification) production. JCOE unit is with low productivity, while higher productivity of UOE unit, JCOE unit in terms of the largest size and the thickness must be greater than the production of UOE product unit. From shaping the economy and shaping adaptation capability, the high level of JCOE forming units is more suitable for the current development trend of large diameter LSAW steel pipe.


Street Talk

No comments present
You May Also Like
4 Ways to Manage A Demolition And Refurbishment Project
Whether you’re knocking down your house to rebuild from scratch or taking on a larger-scale commercial project, it’s a good idea to look for tips and advice before you begin – especially if you’re a newbie to the world of construction. Doing the research beforehand can be the difference between…
By: Rory Oza in  Business  >  Construction Industry   May 31, 2016  
0
  Likes: 0

UAV Drones Helps In Inspection Service
UAV drones are blessing in this modern world to inspect the areas and keep them clean according to the standard requirements. This equipment is very beneficial and operate sin complex industrial environments which frequently have unseen hazards. With the help these equipment it becomes easy to deliver new insights into…
By: john walter in  Business  >  Construction Industry   May 31, 2016  
0
  Likes: 0

New Build Homes Huddersfield
The needs of a family are different from one to the other and each of them requires a solution to meet their demands. If you want to be sure you will turn to the right option, you have to learn more about them. Each option has its own pros and…
By: aby in  Business  >  Construction Industry   May 30, 2016  
0
  Likes: 0

How Do Concrete Pumps Work
Anybody working in the development business, managing all children of developments and solid structures, realizes that solid pumps are crucial for certain employments. Cement is a durable, solid and moderate development material; in this manner it is widely utilized. A structure may utilize either solid pieces or poured concrete. Solid…
By: Zeeshan Ahmad in  Business  >  Construction Industry   May 24, 2016  
0
  Likes: 0

Phenomenal Growth Rate for Pre - engineered Steel & Metal Buildings In Future
The increasing popularity of PEB systems in the industrial sector and the development of infrastructure have propelled the Indian pre-engineered steel buildings market to experience robust growth. Sectors including power, logistics, automotive, pharma, FMCG and capital goods offer huge growth opportunity for PEB in India. In 2011, the structural steel…
By: Sunil Srivastava in  Business  >  Construction Industry   May 23, 2016  
0
  Likes: 0

Mobile Cranes Are More Helpful In A Construction Project
Everyone knows that crane plays an effective role in construction project. There are many types of crane that operates on the construction site but among them mobile crane is most beneficial and helpful. Companies prefer these cranes because of their strong, mobility and versatile factor. There are effective to handle…
By: OliviaGrace in  Business  >  Construction Industry   May 19, 2016  
0
  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 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: suli in  Business  >  Construction Industry   May 18, 2016  
0
  Likes: 0

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: suli in  Business  >  Construction Industry   May 16, 2016  
0
  Likes: 0

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: suli in  Business  >  Construction Industry   May 10, 2016  
0
  Likes: 0

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: suli in  Business  >  Construction Industry   May 09, 2016  
0
  Likes: 0

Top Quality Building Services Oldham Offering New Builds Oldham And Much More
The Oldham city has a long and interesting history of developing from an industrial centre to a service-oriented economy. The demand for new builds Oldham has everything to do with the fact that this part of the country has a lot of scope for development. There are jobs, thanks to…
By: jfab7 in  Business  >  Construction Industry   May 05, 2016  
0
  Likes: 0

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: suli in  Business  >  Construction Industry   May 05, 2016  
0
  Likes: 0

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: suli in  Business  >  Construction Industry   May 03, 2016  
0
  Likes: 0

Height Safety Access Systems And Rope Access Services In Perth
AWMA is additionally a metropolis based mostly all company dedicated to supply height safety access systems installations, facade improvement services, facade construction and facade maintenance services to knowledgeable commonplace whereas remaining competitively priced thus to influence this business market. The company is devoted to providing quality services that systematically exceed…
By: B Stevens in  Business  >  Construction Industry   May 01, 2016  
0
  Likes: 0

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: suli in  Business  >  Construction Industry   Apr 29, 2016  
0
  Likes: 0

Article Views: 565    Report this Article