9. Seamless chalybe pipe GB / T8162-1999, chalybea numerus: 10 #, 20 #, 35 #, 45 # et 16Mn (Q345), Specification: 6-720 * 1-70mm 10. Inconsutilem chalybem fistulam ad liquorem GB portandum / T8163-1999, chalybeum numerus: 10 #, 20 #, 16Mn (Q345), Specificationes: 6-720 * 1-70mm 11. Medium pressurae heminae tubi inferioris GB3087.
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