Through adoping the international top-grade processingequipment and advanced technical procedure, we are able to supply all kinds of seamless steel gas cylinders, nominal service pressure ranges from 8 Mpa to 30 Mpa and/or nomial water capacity ranges from 0.4 liter to 80 liter. Our products are mainly used to fill with permanent gases and hight pressure liquefied gases, such as Oxygen, Nitrogen, Carbon Dioxide etc., it can widely be applied to industry, national defence, chemical,medicine,scientific research and so on.