6m 7m 8m 9m Portable Pneumatic Telescopic Antenna Tower Mast

What is a Pneumatic Mast?     Pneumatic masts are a type of elevation solution using compressed air to raise the central column to its extended height. The masts can either be locking, which each section locks into place once it reaches its maximum extension - designed for safety and long term use( do not lift down the mast), or non-locking where each section sits on cushion  of air- more appropriate for short time using. Classification of masts Model"AT8"---no cable and no lock, for Short time using and small head load. Model"AT9"---with lock. for long time using and large head load. Model"AT7"---with cable. for mounting camera, lights or antenna. Common application Telecommunications, Surveillance, Broadcasting, Disaster Recovery, Site Surveys, Energy Production,  Site so on Mast specification Available Extended height:2m to 30m Head load capacity:5kg to 300kg. Lift operation choose If no electricity and head load is not heavy, lift control could be foot pump or hand pump---manual lift. If thers is electricity and head load is heavy, lift control should be air compressor, easily and quickly. What is the data sheet of Pneumatic Mast? No. 1 extended height 6m 2 retracted height 1.95m 3 max. payload 30kg 4 No. of section 4 5 outer tube diameter 98-82-66-51mm 6 wind load capacity max. 120km/h 1.check the mast in good condition 2.fixed the mast on the ground. tripod fixed diameter is 3.4m,guy wire fixed diameter is 8m. 3.air inlet of control valve connect with air compressor. 4.air outlet of control valve connect wtih the mast. 5. once all mounted, you must keep the lifting control valve handle bar in middle location. (it make the air do not come into mast) 6.open the air compressor switch, at same time adjust the pessure regulating switch to reach 0.2MPa which the pressure gauge shows. 7.then pull up the lifting valve handle bar, mast will rise. 8.if you want to make the mast stop in some height, just make the handle bar in middle. 9. when lift down the mast, please pull down the lifting control valve handle bar.. What's the accessories? No. Type Quantity 1 air compressor or air pump with air hose 1pc 2 car clamp or tripod 1pc 3 guy wires with ground anchor 4pcs 4 control valve 1pc What's the package? Each one set of mast and accessories put into a carton What's the certification? How to contact?