Stainless & carbon steel butt-weld fittings:
Cap:
1. Dimension: ANSI B16.9,  B16.25,  B16.28,  MSS SP-43, SP-48, SP-59. 
2. Size: 1/2" - 24".
1. Material Spec: ASTM A403, A240, A312, A234.
2. Material Grades: 304, 304L, 316, 316L, carbon steel.