The following references are essential to this Standard.While for those with date noted，only their revisions noted with date shall be applicable to this Standard and for those without date noted，their latest revisions（including their all amendments）shall be applicable to this Standard.

GB/T 699 Quality carbon structural steels

GB/T 700 Carbon structural steels

GB 713 Steel plates for boilers and pressure vessels

GB/T 985.1 Recommended joint preparation for gas welding ， manual metal arc welding ， gas-shield arc welding and beam welding

GB/T 985.2 Recommended joint preparation for submerged arc welding

GB/T 1220 Stainless steel bars

GB/T 3077 Alloy structure steels

GB/T 3274 Carbon structural and low alloy steel-hot-rolled plates and strips

GB 6479 Seamless steel tubes for high-pressure chemical fertilizer equipments

GB/T 8163 Seamless steel tubes for liquid service

GB 9948 Seamless steel tubes for petroleum cracking

GB/T 14976 Stainless steel seamless tubes for liquid transport

GB 24511 Stainless steel plate ， sheet and strip for pressure equipments

GB 50009-2012 Load code for the design of building structures

GB 50128 Code for construction and acceptance of vertical cylindrical steel welded storage tanks

NB/T 47008 Carbon and alloy steel forgings for pressure equipments

NB/T 47010 Stainless and heat-resisting steel forgings for pressure equipments

NB/T 47015 Welding specification for pressure vessels

JB/T 4730 Nondestructive testing of pressure vessels

JB/T 4736 Reinforcing pad E82bob77Yv3NJLexnnIH6FQU+2ZhfNv434UIvxF8wG3q1pC6bbWY6FBa37nuWsvQ