polygonal Hub'eghtaHvIS 'ay' pel'aQ polyhedral fan-tu'lu'bej yub SoQ DeSDu' cha' tlhIH megh'an naQ joH rop qoD media joH rop, Hub'eghtaHvIS 'ay' pong polygon bopummeH internal joH rop Qomlaw' tlhe' vaj gho, reH HIjwI'pu' ngu'laH moj circular Qeb pel'aQ applying joq welded polyhedral Qeb. depending on nIS laH pIm Segh carbon yoDSutlIj naQ flanges, pa' actual lo' Du' naH, laH characteristics potlh cha' neH mIw yuQmeyDaq yItungHa', qaH QaQ DeSqIv 'ej vay' size tIn SIH DeSqIv diameter ratio press matay'DI' puS 1.5 manufacturing baS, ideal method yIteb carbon manufacture yoDSutlIj naQ pipes circular Qeb pel'aQ.