CA 55 ASTM A671 EFW Boiler Tube

Torich CA 55 ASTM A671 EFW Boiler Tube

ASTM A 671/A671M-16a

Standard Specification for Electric-Fusion-Welded Steel Pipes for Atmospheric and Lower Temperatures

This standard is issued under the fixed designation A671/A671M; the number immediately following the designation indicates the year of original adoption or,in the case of revision, the year of last revision.A number in parentheses indicates the year of last reapproval,

A superscript epsilon indicates an editorial change since the last revision or reapproval.

Scope:

This Specification covers electric-fusion-Welded Steel Pipe with filler and metal added，fabricated form pressure vessel quality plate of several analyses and strength vessel and suitable for high-pressure service at atmospheric and lower temperatures.Heat treatment may or may not be required to attain the desired properties or to comply with applicable code requirements.Supplementary requirements are provided for use when additional testing or examination is desired.

Size range ：OD ≥400mm,WT ≥6mm.

Production method：

OD tolerance：±5% of the specified outside  diameter.

Out of Roundness: Difference between major and minor outside diameter 1%

Thickness: The minimum wall thickness at any point in the pipe shall not be more than 0.01inch 0.3mm under the specified nominal thickness.

Heat treatment：

1. Without heat treatment

2. Stress released

3. Normalizing

4. Normalizing+Tempering

5. Quenched and tempered

6. Quenched and precipitation heat treated

Testing:

1. Tension Test：

2. Transverse Guided Welded Bend Test

Material：

CA 55,CB 60,CB 65,CB 70,CB 60,CB 65,CC70,CD70,CD80,CFA 65

Referenced Documents:

A20/A20M Specification for General Requirements for Steel plates for Pressure Vessels.

A370 Test Methods and Definitions for Mechanical Testing of Steel Products

A435/A435M Specification for Straight-Beam Ultrasonic Examination of Steel Plates.

A530/A530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipes

A577/A577M Specification for Ultrasonic Angle-Bram Examination of Steel Plates

A578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications

E110 Test Method for Rockwell and Brinell Hardness of Metallic Materials by Portable hardness Testers

E165/E165M Practice for Liquid Penetrant Examination for General Industry.

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