Mss - Sp 55 Pdf

The standard characterises of surface irregularities, using a set of 60 reference photographs to define acceptable and unacceptable quality. Defect Type Description Acceptance Level Type I Hot Tears & Cracks Never acceptable Type II Shrinkage Voids from solidification Type III Sand Inclusions Trapped sand on the surface Type IV Gas Porosity Voids from trapped gas Type V Veining Ridges from sand movement Type VI Rat Tails Depressions from mold failure Type VII Wrinkles/Folds Incomplete metal fusion Type VIII Cutting Marks Burn or mechanical cleaning marks Type IX Scabs Raised blemishes from sand Type X Chaplets Incomplete fusion of internal supports Type XI Weld Repairs Improper surface preparation after welding Type XII Roughness General surface texture Versions & Accessibility MSS SP-55 - Manufacturers Standardization Society

Originally adopted in 1961 by the Manufacturers Standardization Society (MSS) , this standard provides a uniform baseline for identifying and evaluating surface defects in steel pressure castings. Purpose and Scope of MSS SP-55 mss sp 55 pdf

Emily's curiosity was piqued. What could this document be about? She opened the attachment and found herself staring at a dense, technical document filled with jargon and diagrams. The title page read "MSS SP 55: Standard for Subsurface Sucker Rod Pumps and Fittings". What could this document be about