Application industry: machinery, mine, metallurgy, shipping, water conservancy, etc. Working Length from 50mm to 16000mm Tube inside diameter range from 40mm to 1000mm Piston diameter range from 12mm to 410mm Working Pressure from 70 bar to 700 bar Seal type: UN or in accordance with clientâ??s requirement (we usually use PARKER from USA or MERKEL from Germany) Material of cylinder liner: copper (prolongs the life cycle of cylinder) Certificate by CCS, BV, GL, Lloyds, DNV, etc.