... (American area use) . each cylinder will be 100% achieve hydraulic pressure test before we ship to our customer .All the cylinder ... and choose the 34CrMo4 seamless steel tube for Type 1 and Type 2 CNG cylinderTill now SYP can offer to our customer the full ... 60L , 70L, 80L, 90L, 100L, 110L, 120L 130L. 140L 406mm series from 60L , 70L, 80L, 90L, 100L, 110L, 120L 130L. 140L CNG cylinder type 1