What is ASTM A234, MSS SP-75, ASTM A403 Butt Weld Cap
ASTM A234, MSS SP-75, ASTM A403 Butt Welding Cap is a pipe fitting welded to the end of steel pipes, serving to close the pipeline, similar to pipe plugs and plugs. These caps are available in sizes ranging from DN15 to DN1200 (1/2" to 48") and are widely used in various pipeline systems. While the cap and flange blind (blind flange) share similar functions in closing pipelines, there are significant differences between them. The cap directly seals the pipeline through welding, whereas the blind flange, while also capable of sealing the pipeline, is removable, meaning the pipeline retains the possibility of further connection and extension after closure.
ASTM A234, MSS SP-75, ASTM A403 Butt Weld Cap Specification
Standard: ASTM A234, MSS SP-75, ASTM A403
Manufacturing Standard: ASME B16.9, DIN2615, JIS B2312
Size Range: 1/2", 1", 2", 3", 4", 6", 8", 10", 12", 16", 20" to 48". (DN15-DN1200)
Thickness: SCH 10, SCH 40, SCH 80
Surface Coatings: Black Painted, Varnished, Epoxy Coated, Galvanized
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