LAP JOINT STUB ENDS Types Stub end Standards/Grades NFE 29203 / ASME B 16.9 / MSS-SP 43 / Stainless steel Dimensions / Tolerances / Testing (according to Standard) NFE 29203 ND 10 mm to 600 mm (Class ISO PN 10, 16, 25, 40) ASME B 16.9 NPS 1/2" to 24" Finishing - Certification 3.1 B according to EN 1024 Accessories - Applications Used in place of solid stainless steel flanges Facilitates assembly on site