Yongjia Pinxin Valve Co., LTD

Home » Knowledge » Content
Product Categories

what is blue point detection for valves

- Dec 28, 2018 -

Blue Point detection is used for stainless steel valves, such as stainless steel gate valve, stainless steel globe valve, stainless steel check valve and stainless steel ball valve. All material of valve parts (including hand wheel) should be stainless steel.

globe valve_副本


Blue Point detection is a method for inspect whether there is iron residue or contamination on stainless steel surface. Blue color will appear, if free iron is present on surface.


The inspected Stainless steel valves are used for Oxygen, Argon and gas pipeline.