We can supply the acetylene cylinders according to Chinese Standard, the specifications as follow:

40L acetylene cylinder with valve and cap
Water volume: 40L
Outside diameter: 258mm
Wall thickness: 4.0mm
Filling weight of acetone: 13.6kg
Filling weight of acetylene: 6.8kg
One 20`container load: 440PCS
Delivery time: Within 60 days after receipt of your L/C
All the cylinders manufactured by Chinese Standard GB11638

Other questions please no hesitate to let me know. I'm looking forward to your early reply.