... audited manufacturer• OE qualification• We are able to manufacture all types of Forgings as per ... International Approvals• Product Performance• Prompt Delivery5.Our main customers• Jiangsu HenLi high pressure cylinder Inc., LTD • ... material of steel type of 15#,20#,25#,30#.35#,40#,45#,46#,etc.according to customers' different requirements ... materials. 5, excellent heat treatment. hot rolled steel sheet