API 5L muri rusange yerekeza kumurongo.
ASTM A 53 itwikiriye umuyoboro w'icyuma udafite kashe kandi usudira ufite uburebure bw'urukuta.
ASTM A106 GR.B karuboni idafite ibyuma ni ubwoko bwimiyoboro ya karubone idafite igice.
Umuyoboro w'icyuma udafite ubudodo bukozwe mu byuma byose bisobekeranye, kandi imiyoboro y'ibyuma idafite ubudodo bwo hejuru hejuru yiswe imiyoboro idafite ibyuma.