Socket welding cap is a kind of connector used in pipeline systems. It is mainly used to seal pipeline ports and prevent media leakage. Its ingenious design can effectively seal pipeline ports and play an important protective role in the pipeline system. Materials and Scope of Application Socket welded pipe caps are made of various materials, including stainless steel (such as 304, 304L, 316, 316L, etc.) and alloy steel (such as 15CrMo, 12Cr1MoV, etc.). They are suitable for a variety of working conditions, such as piping systems for water, steam, oil and other media.