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国家技术监督局关于批准ＧＢ１５１─８９《钢制管壳式换热器》第２号修改单的函技监国标函（１９９５）２１０号全国压力容器标准化技术委员会：你委员会以（９５）容技委秘字第０３１号文报送的ＧＢ１５１－８９《钢制管壳式换热器》第２号修改通知单，业经我局批准，自...
Technical Supervision of the State Bureau of Technical Supervision on the approval of GB151 ─ 89 “steel shell and tube heat exchanger,” the second letter of a letter Modification Letter GB (1995) 210 National Pressure Vessel Standardization Technical Committee: Your Committee to (95) Commission secret word No. 031 reported GB151-89 “steel shell and tube heat exchanger” No. 2 modified notice, approved by the Bureau, since ...