ASTM A795 Seamless Steel Pipe

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Specification of ASTM A795 Seamless Steel Pipe:

ASTM A795 Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use

Standard: ASTM A795 Grade B,Type S

Size:DN20 to DN250

Thickness:SCH 10,SCH30 and SCH40

Length: 6m / 5.8m / 11.8m / 12m, customized

End: Plain (square cut) / beveled to 30° / roll groove as AWWA C606 / NPT thread as ANSI B1.20.1 

Surface: Red paint / red epoxy resin or polyester / hot dip galvanized / black paint, etc.

Tests of ASTM A795 Seamless Steel Pipe:

· Hydrostatic test: It shall be applied to each pipe ≥ 5s, without leakage through the pipe.

· The min test pressure shall not exceed 2500 psi (17.2 MPa) for pipe ≤ NPS 3", nor 2800 psi (19.3 MPa) for pipe > NPS 3", refer to ASTM A53.

· Nondestructive electric test (NDE) is alternative to hydrostatic test, including ASTM E213 Ultrasonic testing, ASTM E309 Eddy current examination, or ASTM E570 Flux leakage examination.

· Tensile test, bending test and flattening test.

· Permissible variations: tolerance on outer diameter, thickness, length.

· Straightness: The finished pipe shall be reasonably straight.

· Ovality (out of roundness): It is included in OD tolerance. For thin-wall pipe, any one cross-section shall not exceed 1.5% of OD (Refer to ASTM A530).

· Surface / coating test.

· Quantity and weight measurement.

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Elva
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