Each batch of products D&R supply has a material test compliance report.
Before the forging, D&R does essential strict material testing. This is the first step to ensure the quality of D&R valves & fittings. Because different chemical compositions in raw materials will have different effects on brass.
For example, tin can increase the strength of brass and can significantly improve the corrosion resistance to seawater. Manganese can significantly improve the process performance, strength, and corrosion resistance of brass.