CNC cutting machine Hose Note Concern: Search criteria or local standards, according to the type of each gas to assign the appropriate color, please note the following: 1. Oxygen tube is red can only be used for oxygen, can not be used for other gases; acetylene tube is black, prohibit the replacement of two kinds of hose; 2. If the trachea is aging, there may be replacement of the air pipe due to spark damage, heat damage, or burnout. 3. Straighten out the pipe straightly so that there is no place for knots; 5. Exclude the extra trachea of ​​the coil and place it in a place that will not be damaged or will not be cut off; 6. Check the air pipe for leaks, damage, loose fittings, or other problems within the specified distance; 7. The pipe should be as large as possible to prevent damage and reduce the pressure drop, and to prevent the gas from flowing through the throttle valve. Petg is a versatile and economical material. In comparison with Acrylic and polycarbonate, the greatest strength of Petg is that it provides high impact strength but is much more cost-effective than PC material. Major uses of PETG include printing, food package, medical package and operational panel, etc. Pet G Sheet,Pet Panels,Pet Clear Plastic Sheet,Pet Plastic Sheet SUZHOU OCAN POLYMER MATERIAL CO.,LTD , https://www.ocanplastics.com