9. Seamless simbi pombi GB / T8162-1999, simbi nhamba: 10 #, 20 #, 35 #, 45 # uye 16Mn (Q345), Tsanangudzo: 6-720 * 1-70mm 10. Seamless simbi pombi yekuendesa fluid GB / T8163-1999, nhamba yesimbi: 10 #, 20 #, 16Mn (Q345), Zvinyorwa: 6-720 * 1-70mm 11. Low-medium pressure boiler tube GB3087...
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