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How to identify the quality of stainless steel elbow?
May 03, 2018

Stainless steel elbow is a kind of pipe fitting, which is a kind of pipe fitting which changes direction in some engineering pipelines. Generally in engineering machinery, large stainless steel elbow has a large diameter (over 800mm), thin wall rigidity, and smooth appearance. It is very difficult to produce such a large bend with the manufacture of small and medium elbow.

The machining method commonly used in small and medium elbow is: casting method; The process of welding together after being pressed into shape; After cutting and machining, the welding method and so on. For large stainless steel elbow, it is difficult or impossible to manufacture. Because of the casting method, the core is very difficult; It is difficult to find such a large milling equipment by cutting process, which is limited by equipment and processing technology. It is very difficult to produce such large mould with pressing method, and the cost is very high.

Distinguish the quality of stainless steel elbow:

1. Appearance quality, non-rust, high surface finish, stainless steel without defects is made by a large factory, with good performance.

2. Chemical composition. Generally speaking, stainless steel with high nickel content and low carbon content has good corrosion resistance, but the price is relatively high.

3. Simple judgment, generally non-magnetic stainless steel (austenite) has better corrosion resistance than magnetic stainless steel (ferrite).

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