spirally welded pip

Hi everybody,
My name is Neelima and I am pursuing my Masters in Oil and Gas Engineering. At present I am working on a project titled "Investigation on the potential use of spirally welded pipe in subsea flowlines and pipeline". Due to construction problems I could not access the books and journals in my library. Could anyone please suggest me the relevant websites, books and journals to get relevant information about the spirally welded pipe. I am in a very confused state. When I log into the some websites its asking to get registered. Therefore I am in a helpless situation. Could anyone please suggest me the good topics about this pipe to include in the project.

Hoping a positive response soon.

Thank You

Regards
Neelima

As an alternative process, spiral weld construction allows large diameter pipe to be produced from narrower plates or skelp. The defects that occur in spiral welded pipe are mainly those associated with the SAW weld, and are similar in nature to those for longitudinally welded SAW pipe. An additional problem with early spiral welded pipe was poor dimensional accuracy, particularly out of roundness at the pipe ends. This led to problems of poor fit-up during field girth welding. Spiral linepipe gained a poor reputation in some companies as a result of these early experiences, and it was considered suitable only for low pressure applications such as water pipe. However, modern spiral linepipe from a premium quality supplier is of a quality equivalent to straight seam welded pipe, and it has been used extensively in Canada and Europe for high pressure gas pipelines in grades up to API X70.

u may also refer API 5L, EN10208-2 standarads

u can also visit the following links to know more

www.vtz.ru/eng/product_pipes_ld_e.php

www.mangroup.com/products/spiral ... turing.htm

www.dofasco.ca/bins/content_page ... 40-663-814




Raghuram

Can u provide me your e-mail? I will send you some related documents as attachments.