Tenaris: Galimoto yaikulu kwambiri padziko lonse lapansichitoliro chachitsulo chopanda msokowopanga, wokhala ndi mphamvu zambiri komanso phindu lalikulu. Likulu lake lili ku Luxembourg.

Chitsulo Chapadera cha CITIC: Mtsogoleri mumakampani opanga zitsulo zapadera, wokhala ndi mphamvu zonse zopangira zitsulo zapadera zokwana matani 20 miliyoni pachaka.

Vallourec: Mtsogoleri wapadziko lonse lapansi pa mapaipi achitsulo apamwamba kwambiri, wotchuka padziko lonse lapansi chifukwa cha luso lake laukadaulo ndipo ali pamsika wapamwamba kwambiri.

TMK Group: Kampani yaikulu kwambiri yopanga mapaipi achitsulo ku Russia, yomwe ilinso ndi udindo waukulu pamsika wa US.

Nippon Steel: Kampani yaikulu yachitsulo ku Japan, yomwe imapanga zinthu zake imakhudza mafakitale ambiri, yotchuka chifukwa cha miyezo yake yapamwamba komanso uinjiniya wolondola.

Interpipe: Imodzi mwa makampani opanga mapaipi osasunthika padziko lonse lapansi, yomwe ndi imodzi mwa makampani akuluakulu pamsika.

ArcelorMittal: Imodzi mwa makampani opanga zitsulo zazikulu kwambiri padziko lonse lapansi, imagwiritsa ntchito mphamvu zake zazikulu zopangira zinthu kuti ikwaniritse chuma chambiri.

JFE Steel: Imodzi mwa makampani opanga mapaipi achitsulo osasunthika okhala ndi mainchesi akuluakulu padziko lonse lapansi, komanso kampani ina yaikulu yopanga zitsulo ku Japan.

Tata Steel: Kampani yaikulu ya zitsulo ku India yomwe zinthu zake zimakwaniritsa miyezo yapadziko lonse lapansi.

ChelPipe Group & OMK: Kampani yotsogola kwambiri ku Russia yokonza mapaipi achitsulo komanso wosewera wofunikira pamsika wapadziko lonse lapansi.

Jindal Saw: Kampani yotsogola yopanga mapaipi achitsulo ku India yomwe ili ndi mphamvu yayikulu pamakampani opanga mapaipi achitsulo osasunthika padziko lonse lapansi.

Borusan Mannesmann: Kampani yotsogola yopanga mapaipi achitsulo ku Turkey yomwe ili pamphambano ya Europe ndi Asia, yokhala ndi mphamvu yayikulu pamsika wachigawo.

EVRAZ: Kampani yapadziko lonse lapansi yolumikizidwa ndi zitsulo ndi migodi yomwe bizinesi yake imakhudza kupanga mapaipi achitsulo.

EEW Group: Kampani yopanga zinthu ku Germany yomwe imadziwika bwino ndi mapaipi achitsulo akuluakulu, imadziwika ndi zinthu zake zapamwamba komanso zolondola kwambiri.

Severstal: Imodzi mwa makampani akuluakulu a zitsulo ophatikizidwa ku Russia, omwe ali ndi udindo waukulu m'misika ya Russia ndi yapadziko lonse lapansi.

Kingland & Pipeline Technologies: Kampani yodziwika bwino padziko lonse lapansi mumakampani opanga mapaipi achitsulo osasunthika okhala ndi mainchesi akuluakulu.

Kuphatikiza apo, Russia ilinso ndi PAO TMK (ndalama zamsika zokwana pafupifupi US$1.83 biliyoni), zomwe nthawi zambiri zimakhala zomwezo kapena zogwirizana kwambiri ndi TMK Group yomwe yatchulidwa pamwambapa; zonsezi ndi zazikulu kwambiri mumakampani opanga mapaipi achitsulo aku Russia.

Magawo Opikisana Padziko Lonse
Kutengera mphamvu zawo zonse komanso udindo wawo mumakampani, makampani awa akhoza kugawidwa m'magulu otsatirawa:
Gawo 1 (Atsogoleri Padziko Lonse): Tenaris, Vallourec, TMK Group, CITIC Special Steel. Makampani anayi awa ali ndi mphamvu yaikulu padziko lonse lapansi, mitundu yonse ya zinthu, komanso mphamvu zazikulu zopangira, zomwe zimawapangitsa kukhala atsogoleri enieni mumakampani.

Gawo 2 (Atsogoleri a Chigawo/Ukadaulo): Nippon Steel, Interpipe, ArcelorMittal. Ali ndi mphamvu zambiri komanso mwayi wopikisana m'madera enaake (monga Japan ndi Europe) kapena m'magawo enaake aukadaulo (monga kupanga zinthu zapamwamba za Nippon Steel).

Gawo 3 (Osewera Ofunika Kwambiri Msika): JFE Steel, Tata Steel, ChelPipe, OMK, Jindal Saw, Borusan Mannesmann, ndi zina zotero. Makampaniwa amachita ntchito zofunika kwambiri m'maiko awo kapena m'magulu azinthu (monga India, Russia, Turkey, mapaipi akuluakulu, ndi mapaipi a mapaipi), ndipo ndi mphamvu yofunika kwambiri pa unyolo wapadziko lonse lapansi woperekera zinthu.