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Grinnell - Model A106 -Seamless Carbon Steel Pipe
FromITT Grinnell
Specification A106 covers seamless carbon steel nominal wall pipe for high-temperature service, suitable for bending, flanging and similar forming operations. NPS1-1/2 and under may be either hot finished or cold drawn. NPS 2 and larger shall be hot finished unless otherwise specified. Surface finish standards are outlined In the specification. Purchaser may specify NDE In lieu of hydrostatic test or neither. Unless otherwise specified, pipe is furnished with plain ends.
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Testing Requirements
- Hydrostatic Testing
- Inspection test pressures produce a stress In the pipe wall equal to 60% of specified minimum yield strength (SMVS) at room temperature. Maximum pressures are not to exceed 2,500 psl for NPS 3 and under, and 2,800 psl for the larger sizes. Pressure Is maintained for not less than 5 seconds.
Mechanical Tests
- Tensile Test - NPS 8 and larger - either transverse or longitudinal acceptable
- Smaller than NPS 8 - longitudinal only
- Flattening Test - NPS 2 and larger
- Bending Test (Cold) - NPS 2 and under
