Many newcomers to these standards are understandably confused by the relationship between MSS SP‑69 and MSS SP‑58. The critical point is this: .
MSS SP-69 establishes strict criteria for materials based on environmental factors: mss sp 69 pdf
: Ensure that the material of the stub end is compatible with the piping system it will be used in. Refer to MSS SP 69 for specified materials. mss sp 69 pdf
Formally titled this standard was developed by the Manufacturers Standardization Society (MSS) . It provides the essential guidelines for how to pick and place the hardware that holds up pipes. mss sp 69 pdf