Pressure vessel manufacturing license requires enterprises must establish corresponding to boiler pressure vessel products and ensure the continuous functioning of the quality management system. Enterprise should continue manufacturing the boiler pressure vessel performance, to verify that the boiler pressure vessel quality management system control. Nondestructive testing, heat treatment and physical and chemical properties test work, can be borne by the enterprise, also can be concluded with the enterprises have the corresponding qualifications or ability of the subcontract agreement, the subcontract agreement shall to the license issuing agency for the record. Work commissioned by the corresponding report issued by was entrusted enterprise, work entrusted by the clients will be in charge of quality control, and incorporated into the boiler, pressure vessel quality assurance system control. The content of the special conditions required shall not subcontract.

Enterprises must be able to independently complete the body of the boiler pressure vessel products manufacturing, boiler pressure vessel must not be product of all pressure parts to the subcontract.