9. Pipa baja mulus GB / T8162-1999, nomer baja: 10 #, 20 #, 35 #, 45 # lan 16Mn (Q345), Spesifikasi: 6-720 * 1-70mm 10. Pipa baja mulus kanggo ngirim cairan GB / T8163-1999, baja nomer: 10 #, 20 #, 16Mn (Q345), Spesifikasi: 6-720 * 1-70mm 11. Low-medium pressure boiler tube GB3087...
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