Muri iki gihe mu nganda, imiyoboro yicyuma ikoreshwa muburyo butandukanye bwo gukoresha no muburyo bwinshi, butangaje. Muri byo, ASTM A106 / A53 / API 5L GR.B icyiciro cya B cyicyuma B, nkibikoresho byingenzi byumuyoboro wicyuma, gitoneshwa naba injeniyeri nababikora kubwiza bwiza p ...
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