Steel Series air defense door models (four General Staff Academy) single-leaf steel protective closed doors, steel double-leaf door closed Protection 1 GFM0716 (6) / (5) 1 GSFM2525 (6) / (5) 2 GFM0820 (6) / (5) 2 GSFM3025 (6) / (5) 3 GFM0920 (6) / (5) 3 GSFM3030 (6) / (5) 4 GFM1020 (6) / (5) 4 GSFM4025 (6) / (5) 5 GFM1220 (6) / (5) 5 GSFM4030 (6) / (5) 6 GFM1320 (6) / (5) 6 GSFM5025 (6) / (5) 7 GFM1520 (6) / (5) 7 GSFM6025 (6) / ( 6) 8 GFM2020 (6) / (5) 8 GSFM6025 (6) / (5) 9 GSFM6030 (6) single-leaf steel door closed, steel double-leaf door closed 1 GM0716 1 GSM2525 2 GM0820 2 GSM3025 3 GM0920 3 GSM3030 4 GM1020 4 GSM4025 5 GM1220 5 GSM4030 6 GM1320 6 GSM5025 7 GM1520 7 GSM6025 8 GM2020 8 GSM6030 Henan Sheng-chun, air defense equipment, Ltd. was established in 2014, is the designated office of civil defense, Henan Province door manufacturer, if you have any of the civil air defense projects in doubt, call the company, the business manager Zhou Ming enthusiasm to answer your questions! Air defense projects protective door code, meaning production of standardized air defense on the door of the following: BFM protective door closed doors Puyang air defense manufacturers, B- GB mark, F- protection, M- BM closed doors closed doors BMH explosion wave valve B- GB sign air defense door manufacturer, M- door form, H- Gates Also, before protective closed doors and closed doors have a H logo Kaifeng air defense door manufacturers, such as BHFM and BHM, where H represents the air defense door sill alive. For example, regular air defense BFM1520-15 door door manufacturers, representing protection closed doors, width 1500, 2000 High, doors design pressure is 0.15MPa. Provide air defense door manufacturers, air defense door manufacturer Xinyang City, Henan and air defense gate prices low by Henan Sheng-chun, air defense equipment Limited. Henan Jin Sheng air defense equipment Limited (www.jsrenfang.com/) strong, credible, in Zhumadian other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jin Sheng air defense and you hand into the brilliant, for a better future!