Stainless steel elbow use precautions

The corrosion resistance of stainless steel decreases with the increase of carbon content. Therefore, the carbon content of most stainless steels is low, the maximum is less than 1.2%, and the wC (carbon content) of some steels is even lower than 0.03% (such as 00Cr12). ). The main alloying element in stainless steel is Cr (chromium), and steel has corrosion resistance only when the Cr content reaches a certain value. Therefore, stainless steel generally has a Cr (chromium) content of at least 10.5%. The stainless steel also contains elements such as Ni, Ti, Mn, N, Nb, Mo, and Si.

Stainless steel elbows are used and maintained in an accurate and fair manner. The notes are as follows:

1. Ball valve of stainless steel elbow, stop valve, gate valve only when fully open or fully closed, do not allow to adjust the flow, so as to avoid erosion of the sealing surface and accelerate wear. The gate valve and the upper thread stop valve have a reverse sealing device, and the hand wheel is screwed to the uppermost position to prevent the medium from leaking from the packing.

Second, long-term storage of stainless steel elbows should be checked on schedule, often the exposed surface must be kept clean, remove dirt, neatly stored in a place where the room is airy and dry, no stacking or open storage. Always keep the stainless steel elbow dry and ventilated, keep the cleaner clean and tidy, and store it according to the exact storage method.

3. When installing, the stainless steel elbow can be directly installed on the pipeline according to the connection mode, and installed according to the position used. Under normal circumstances, it can be installed at any position of the pipeline, but it is easy to check the operation. Keep in mind that the flow direction of the stainless steel elbow should be upward from the longitudinal valve. The stainless steel elbow can only be installed horizontally. Stainless steel elbows should be carefully sealed during installation to prevent leakage and affect the normal operation of the pipeline.

Commonly used grades of precipitation hardening stainless steel are 04Cr13Ni8Mo2Al and the like. It can be treated to hard (strong) stainless steel by precipitation hardening (also known as age hardening).