Sanonpipe bụ ọkachamara na-ebunye ma na-emepụta ọrụ ọkpọkọ ígwè na-enweghị ntụpọ na China. Isi ngwaahịa ya bụọkpọkọ mmiri ọkụ, ọkpọkọ mmanụ, ọkpọkọ igwe, fatịlaịza na ọkpọkọ kemịkalụ, naọkpọkọ ígwè nke na-enweghị ntụpọIhe ndị bụ isi e ji mee ya bụ:SA106B, 20 g, Q345, 12 Cr1MoVG, 15 CrMoG, Cr5Mo, 1 Cr9Mo, 10 CrMo910,A335P5/ P9 / P11 / P12 / P22 / P91 / P92