Case study · Heat exchangers
4" SA-194 2H round nuts and 4-1/4" B7 studs, made for a heat exchanger turnaround
4"-8 UN round nuts in ASME SA-194 Grade 2H, made with 4-1/4" SA-193 B7 studs for a heat exchanger turnaround.
4"
Round nut, 8 UN
4-1/4"
SA-193 B7 studs
2H
SA-194 nut grade
The challenge
What the customer needed.
A heat exchanger turnaround called for 4"-8 UN round nuts in ASME SA-194 Grade 2H, rather than a standard heavy hex pattern, together with 4-1/4" SA-193 B7 studs.
What we made
The parts.
4"-8 UN round nuts in ASME SA-194 Grade 2H, made with 4-1/4" SA-193 B7 studs.
The result
How it turned out.
The round nuts and B7 studs were made together for the turnaround.
SA-194 2H is quenched and tempered medium-carbon steel, the standard nut grade for A193 B7 studs. B7 studs over 4" to 7" call for 100 ksi minimum tensile and 75 ksi minimum yield.
Job at a glance
Nut4"-8 UN round nut
Nut gradeASME SA-194 Grade 2H
Studs4-1/4" SA-193 B7
ServiceHeat exchanger turnaround
Made inHouston, Texas · ISO 9001 certified
Related
Grades, parts and processes on this job.
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