PSL-1 bahosi:
Quvur quvurlari X42/L290 po'lat markasi: C 0,28% dan kam yoki teng, Mn 1,30% dan kam yoki teng, P {{ dan kam yoki teng 12}}.030%, S 0 dan kichik yoki teng.030%, Nb+V+Ti 0,06% dan kam yoki teng, Cu 0,50% dan kam yoki teng, Ni 0,50% dan kam yoki teng, Cr 0,50% dan kam yoki teng, Mo 0,15% dan kam yoki teng
PSL-2 bahosi:
Chiziq trubkasi L290N/X42N po'lat markasi: C 0.24% dan kam yoki teng, Mn 1,20% dan kam yoki teng, P { dan kichik yoki teng {10}.025%, S 0 dan kichik yoki teng.015%, Nb {{20}} dan kichik yoki teng.05%, V 0,06% dan kam yoki teng, Ti 0,04% dan kam yoki teng, Cu 0,50% dan kichik yoki teng , Ni 0,30% dan kam yoki teng, Cr 0,30% dan kam yoki teng, Mo dan kam yoki teng 0,15%, B 0,004% dan kam yoki teng.
Chiziq trubkasi L290M/X42M markasi: C dan kam yoki unga teng 0,22%, Mn 1,30% dan kam yoki teng, P {{ dan kichik yoki teng 10}.025%, S 0 dan kichik yoki teng.015%, Nb {{20}} dan kichik yoki teng.05%, V 0,05% dan kam yoki teng, Ti 0,04% dan kam yoki teng, Cu 0,50% dan kam yoki teng , Ni 0,30% dan kam yoki teng, Cr 0,30% dan kam yoki teng, Mo dan kam yoki teng 0,15%, B 0,004% dan kam yoki teng.
API 5L standarti X42/L290 materialning kuchlanish sinovi talablari:
PSL-1 darajasi: oqish kuchi 290MPa dan katta yoki unga teng, tortishish kuchi 415MPa dan katta yoki unga teng
PSL{0}} darajasi: oqish quvvati -290MPa ~ 495MPa, tortishish kuchi: 415MPa ~ 655MPa, oqish nisbati 0,93 dan kam yoki unga teng
