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How to choose the Union?

We are selling two kinds of union now, one is flat seal with gasket, and the other is cone seal. Please see the picture below.The flat seal is to place O-ring seals, usually made of PTFE, on two contacting planes, and there will be no leakage between the planes. Cone seal is two surfaces with different […]

Difference of SCH20 and SCH40

The pipe products in threaded pipe fittings can be roughly divided into the following categories: welding hose nipple, threaded hose nipple, welding nipple, barrel nipple, running nipple, close nipple. Among them, the most commonly used are welding nipple and barrel nipple: The difference between SCH20 and SCH40 refers to the thickness of pipe products. SCH40 pipe […]

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