By A Mystery Man Writer
Steel pipe cap is working as a pipe plug used to close the pipeline. Types in butt weld & socket weld cap, material in carbon, alloy and stainless steel.
The Old Farmer's Almanac 2009 [2009 ed.] 1571984534
Steel Pipe Cap Specifications (BW Cap & SW Cap) - Octal Pipe Fittings
Steel Pipe Cap Specifications (BW Cap & SW Cap) - Octal Pipe Fittings
List of vacuum tubes - Wikipedia
pipe fitting cap-CONTINENTAL STEEL CO.,LTD
CryptoPunkets #20 - CryptoPunkets
Socket Weld Fittings Types and Applications - Completely Specification
Carbon Steel Pipe end Caps
API 5L Pipe Specification, PDF