Through adopting the international top-grade processing equipment & advanced technical procedure,we can supply all kinds of seamless steel gas cylinders,nominal service pressure rangers from 8 Mpa to 30 Mpa and nominal water capacity ranges from 0.4 liter to 80 liter,our products are mainly used to fill with permanent gases and high pressure liquefied gasses, such as Oxygen ,Nitrogen,Carbon Dioxide etc.,it can widely be applied to Industry,National defense,Medicine,Scientifc research and so on.