MSS SP-43 Wrought and Fabricated Butt Welding Fittings for Low Pressure,Corrosion Resistant Applications

1. SCOPE
1.1 This Standard Practice provides dimensions, tolerances, and markings for butt welding fittings for low pressure,corrosion resistant applications.
1.2 This Standard Practice covers only fittings made for use with Schedule 5S or 10S pipe,for all NPS sizes listed in ASME B36.19M,except that for short pattern stub ends suitable for use with Schedule 40S are also shown.

2. REFERENCES
2.1 Standards and specifications adopted by reference in this Standard Practice are shown in Annex A for convenience of identifying edition
number,date and source of supply.

3. PRESSURE RATINGS
3.1 Fittings covered by this Standard Practice are not pressure rated;however,they must be capable of withstanding 30% of the allowable pressure rating of the pipe with which they are marked.
3.2 For fittings of same pressure rating of matching pipe,refer to ASME B16.9.

4. SIZE
4.1 The size of the fittings in Tables 1 through 6 are identified by the corresponding nominal pipe size.

 

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