A guide to SA 213 Boiler Tube

    SA 213 standard specification for seamless ferritic andaustenitic alloy-steel boiler, super heater,and heat-exchanger tubes.

    1. Chemical analysis of finished products: It shall be analyzed from one billet or one pipeper furnace, and the chemical composition determined accordingly shall meet thespecified requirements.

    2. Surface state: Austenitic steel pipe should be washed to removethe scale, when the use of bright annealing, you do not need pickling.

    3. Mechanical test and grain size:

    (1) Grain size: according to ASME E112 standardtest.

    (2) Hardness test: from each batch of two tubes onthe sample to do Brinell or Rockwell hardness test.

    (3) Tensile test:Such as each batch of steel pipe≤ 50 root, then take a sample for tensile test; each batch of steel pipe>50, then two steel pipes should take two samples for tensile test.

    (4) Flaring test: in each batch of a finished tubeat both ends of a sample for a flaring test, but the root canal can not be usedas a flattening sample.

    (5) Water pressure test: each pipe should behydrostatic test. When the buyer is specified, a non-destructive test may beused instead.

    (6) Flattening test: in each batch of a finishedtube at both ends of each sample to take a flattening test, but the root cannot used as a flaring sample.

    http://www.xysteelpipe.com/info/A-guide-to-SA-213-Boiler-Tube-743-1.htm

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