... Russia 4.Item: BMC SMC COMPOSITE MANHOLE COVER 1. EN124 BMC SMC composite manhole cover features1.Strictly manufacture according to ISO9001, ISO14000 ... post,telecommunication,communication pipeline well; (2) Street lamp well,fire control well,all kinds of valve well;(3)City water,drainage ... pipeline well;heat supplied,gas well;(4)As cover board for anti-corrosion project,open ditch;it as ...