1. standard and Material: ISO15500, seamless low carbon steel tube or seamless stainless steel tube.,etc
2. Treatment: bright annealed tubes; Air-tight test 30MPa
3. Product usage: CNG high pressure tube is used for LPG , CNG sequential injection system conversion kits.
4. Both ends of tube without rag, corner processing, smooth, absence of istortion.
5. Steel tube is seamless tube with bright annealing treatment
6. Inside of tube should be no rust
7.Bending tube with tools of 25mm radius, bending torsion is no more than 11NM
8. Packing: PVC package requirement in cartons