ASME SA106, ASTM A106 GR B Seamless Steel Pipe, 1/4-30IN

Oct 15, 2021

ASTM A106 GR B Seamless Steel Pipe

ASTM A106 Grade B (ASME SA106 Grade B):
NPS 1/4" to 30" diameter.
Schedules 10 through 160, STD, XH and XXH.
Schedules 20 through XXH.
Wall Thickness beyond XXH, including: Up to 4" wall in 20" through 24" OD- Up to 3" wall in 10" through 18" OD- Up to 2" wall in 4" through 8" OD
* Special note for Customers: Due to changes in ASTM A106 versus ASME SA106, please indicate if you specifically need ASME SA106 on your purchase order. See changes in allowable chemistry on the A/SA 106 Spec sheet.

Chemical Composition:
The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified. Permissible Variations in Weights per Foot Weight of any length shall not vary more than 10% over and 3.5% under that specified. NOTE — NPS 4 and smaller — weighed in lots. Larger sizes shall be weighed separately by length. Permissible Variations in Outside Diameter. Outside Diameter at any point shall not vary from standard specified.

Hydrostatic Testing:
Inspection test pressures produce a stress in the pipe wall equal to 60% of specified minimum yield strength (SMYS) at room temperature. Maximum Pressures are not to exceed 2500 psi for NPS3 and under 2800 psi for the larger sizes. Pressure is maintained for not less than 5 seconds.

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Phone: 86-592-5819200
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