Tuubada caalamiga ahnabar lahaynHeerka badanaa wuxuu leeyahay laba nidaam, oo ah tuubada yurubNidaamka FlageWaxaa matalay Jarmalka Din (oo ay ku jiraan midowgii Soofiyeeti hore) iyo tuubada MareykankaNidaamka FlageWaxaa matalay American American Tuubbadanabar lahayn. Intaas waxaa sii dheer, waxaa jira japan Pipe-ka Jisesenabar, laakiin rakibaadda petrochemical guud ahaan waxaa loo isticmaalaa oo keliya howlaha guud, saameynta caalamiga ahna waa yar tahay. Tilmaamaha tuubbooyinka ee dalal kala duwan ayaa hoos lagu soo bandhigay:

1, ilaa Jarmalka iyo midowgii Soofiyeeti hore oo ah wakiilka taranka nidaamka Yurubnabar lahayn
2. Nidaamka Ameerika Pipe Flepe Flenge Heerka, oo matalaya Ansib16.5 iyo Ansib16.47
3, Briperish iyo Faransiiska Bisil Flenge Flenge, laba dal midkiiba wuxuu leeyahay labo heerar jilicsan oo jilicsan.
In la soo koobo, heerka caalamiga ah ee foosha foosha waxaa lagu soo koobi karaa inay yihiin laba kala duwan oo aan is dhexdiri karin nidaamyada tuubbada tuubooyinka ee Yurub ee ay matalaan Jarmalka; Mid kale ayaa ah nidaamka tuubbada american ee uu matalo Mareykanka.
IOS7005-1 waa heerka caadiga ah ee ay soo saartay Ururka Caalamiga ah ee loo yaqaan 'Standard' ee loo yaqaan 'Standardge' oo ay u soo saartay Ururka Caalamiga ah ee Heerka 1992, heerka ayaa runtii ah Mareykanka iyo Jarmalka laba taxane ah oo bir ah oo lagu daray heerka tuubbada.