A na-eji eriri ncharaASTM A335 P11, ASTM A335 P22, ASTM A335 na-ebuga na mba South America n'oge a na-esite na igwe eji eme ihe a ma ama, TSTC, HSTC.

Ụlọ ọrụ ụlọ ọrụ na-emekọ ihe ọnụ na-echekwa 6,000 tọn na-enweghị ụdọ na-enweghị ụkwụ na-acha uhie uhie kwa afọ, tumadiPiper Piper, ASTM A335 P5, P9, P11, P22, P91, wdg, wdg n'afọ ndị na-adịbeghị anya, ngwa ahịa nke ngwongwo anyị na-emekọrịta ihecarbon nchara carbon, square na akụkụ anọ, naỌkpụkpụ igwe anaghị agba nchara. Ndị na-eweta ngwongwo anyị na-arụkọ ọrụ nwere ike inye ngwongwo na-enweghị ihe dị iche iche iji gboo mkpa nke iwu iwu, site na iwu nke ọtụtụ ígwè, iwu inviers, na iwu ahia. Anyị nwere ike inye otu ọrụ otu nkwụsị. Nnabata ịzụta.