Question: For the pipe flexible connector shown in the diagram, how should the specifications be written?
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Recently, a batch of PVC pipes and related fittings need to be submitted for approval. I have a question: regarding the flexible pipe connectors shown in the figure below, how should their specifications be written?
Size, material, connection type, pressure rating – these are required, right?
Size, Material, Connection Type, Pressure, Seal Type
A separate data sheet for the hose should be provided
Pressure, diameter, length, material of the outer mesh, material of the internal corrugations, whether the flange is a loose-flange type, amount of compensation... Many manufacturers use 304 or 316 for the internal corrugations, but the outer mesh is often made from materials such as 201; therefore, this needs to be specified in advance before placing an order.
1. Specification, such as DN100. 2. Pressure, such as PN10. 3. Connection type, such as flange connection or threaded connection; there are special types of flanges namely swivel flange connections – the vertical part in the diagram with its upper end being movable represents a swivel flange, that is, one end is a swivel flange. 4. Material: carbon steel for flanges, 304 for other components, or all stainless steel. **Material. 5. Length: this is generally determined based on the actual usage conditions on site, such as 1000mm, 1.5M, etc