manhole covers and frame

Ductile iron grey iron EN 124; BSEN124; UNIEN124; ASSAINISSEMENT; A15; B125; C250; D400; E600; F900; BITUMINOUS PAINT; TESNSILE STRENGTH: 500MPA ENVIRONMENTAL PROTECTION ; WITH RAW MATERIAL NON-TOXICITY, IT WILL NOT INFLUENCE TO USER. APPLICATIONS: ELECTRIC POWER PIPE LINE WELL, POST , TELECOMMUNICATION, COMMUNICATION PIPELINE WELL. STREET LAMP WELL, FIRE CONTROL WEELL ALL KINDS OF VALVE WELLS; CITY WATER , DRAINAGE PIPELINE WELL; HEAT SUPPLIED ; GAS WELL. OPEN DITCH, IT AS WELL AS CAN BE MADE ACCORDING TO CUSTOMERS REQUIRMENTS. ANTI -Theft. Non-recycle, anti-theft naturally, the lock attachment can prevent turnel products, from losting , therefore city blackhole can be stopped totally.