... from some gas discharge lamps like high-pressure sodium lamp, metal halide lamp, etc.4.Long life, slow light decline: The average ... , square, factory, oil field,etc. Type 420 mining lampHID75GK-BHID150GK-B Bulb type:G90-E40/E27(ball shape, phosphor powder coating ... (ball shape, phosphor powder coating)T46-E40/E27(pillar shape)Lamp spec.:Φ42×42cmWeight:2.7kgLighting height:3 -8m70W-150W3300K-8000KWidely ...