China Cylinder Steel suppliers High Strength Hot Rolled HP345 Gas Cylinder Steel HP345 is a material grade under JIS G3116 specification. HP345 steel is a hot rolled steel plate and coils for gas cylinder. 聽聽 Category: HP345 Gas Cylinder Steel Grade: HP345 Standard: JIS G3116 聽聽 Application 聽 HP345 Gas Cylinder Steel is mainly used to manufacture liquefied petroleum gas cylinders, acetylene...