Dear sir, Our company is a main manufacture of cylinder in China, we can supply 10-60 L acetylene cylinders, thereinto the 40 L acetylene cylinders is the main product. The specifications of 40L as follow: water volume: 40L outside diameter: 258mm wall thickness: 4.0mm filling weight of acetone 13.6kg filling weight of acetylene 6.8kg total height ~1045mm bare weight(without acetone) ~55 one 20`container can load 440 pcs cylinders all the cylinders manufactured by Chinese Standard GB11638 More informations please contact with me. I hope that we can cooperate with together. Best Wishes, Mick Cheng Price Condition FOB Ningbo Origin China Packaging in bulk Delivery lead time within 50 days after receipt of L/C Minimum order no request Supply ability 100000 pcs/year