MSS SP-75
Specification for High-Test, Wrought,
Butt-Welding Fittings
MSS SP-75 specification covers factory-made, seamless and
electric welded carbon and low alloy steel, butt-welding fittings for use in
high pressure gas and oil transmission and distribution systems, including
pipelines, compressor stations, metering and regulating stations, and mains.
MSS SP-75 Standard Practice governs dimensions, tolerances,
ratings, testing, materials, chemical and tensile properties, heat treatment,
notch toughness properties, manufacture and marking for high-test, butt-welding
fittings NPS 60 and smaller. Dimensional requirements for NPS 14 and smaller
are provided by reference to ASME B16.9.
The term “welding fittings” applies to butt-welding fittings
such as elbows, segments of elbows, return bends, caps, tees, single or
multiple-outlet extruded headers, reducers, and factory-welded extensions and
transition sections.
Fittings may be made to special dimensions, sizes, shapes,
and tolerances, or of wrought materials other than those covered by this
Standard Practice by agreement between the manufacturer and the purchaser. When
such fittings meet all other stipulations of this Standard Practice they shall
be considered as being in partial compliance therewith, providing they are
appropriately marked.
ฝ่ายขาย Tel. 061-5906036
ฝ่ายขาย Tel. 061-5906036
