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Technical requirements for high pressure hot drawing tee fitting

Mar 19, 2020

When designing and manufacturing high-pressure hot-drawn tee pipe fittings, strict standards shall be required, and the products shall meet the following technical requirements:

1. After heat treatment of high-pressure hot drawing tee pipe fitting, the metallographic structure is the same as the raw material;Surface hardness;The alloy steel was HB125~197;Galo steel is about HB217.

2. No cracks are allowed on the surface of high-pressure hot-drawn tee pipe fitting;Surface smooth, scar, fold and other defects depth is not greater than 1.6mm;The depth of surface scale and heavy skin shall not be greater than 0.4mm.

3. The geometric size and deviation of high-pressure hot drawing tee pipe fitting, such as the inner and outer diameter of the port, the internal and external groove, the deviation of the Angle of the end face, and the height of the branch pipe should meet the requirements of the drawing;The butt wall thickness of the product port shall not be less than the small value allowed by the nominal thick wall of the connection pipeline, and the wall thickness of the rest shall not be less than 90% of the designed wall thickness, and the small part shall not be less than 87.5%;The ellipticity outside the port shall not be greater than 6% of the nominal outside diameter;When the port wall thickness is greater than 1.15 times of the pipe wall thickness, the internal groove shall be reprocessed according to the standard.

4. The flow area of high-pressure hot drawing tee pipe fitting shall not be less than 90% of the flow area of the main pipe.

WH-STEEL is a foreign trade enterprise integrating r&d, production, quality inspection and transportation.The company's main pipeline equipment products, including steel pipe, pipe fitting, flange, tee and other products.After the good situation of the new coronavirus outbreak in China, we have resumed our work, and all the links including quotation, production and transportation have returned to the right track.Welcome friends from all over the world to choose WH-STEEL to purchase high quality pipeline products.


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