ASTMA500 Cold Formed Seamless and Welded Carbon Steel Structural
Tubing in Rounds and Shapes
1. Scope*
1.1 This specification covers cold-formed welded and seamless
carbon steel round, square, rectangular, or special shape
structural tubing for welded, riveted, or bolted construction of
bridges and buildings, and for general structural purposes.
1.2 This tubing is produced in both welded and seamless sizes with
a periphery of 64 in. (1626 mm) or less, and a specified wall
thickness of 0.625 in. (15.88 mm) or less. Grade
D requires heat treatment.
NOTE 1—Products manufactured to this specification may not be
suitable for those applications such as dynamically loaded elements
in
welded structures, etc., where low-temperature notch-toughness
properties may be important.
1.3 The values stated in inch-pound units are to be regarded as
standard. The values given in parentheses are mathematical
conversions of the values in inch-pound units to values in SI
units.
1.4 The text of this specification contains notes and footnotes
that provide explanatory material. Such notes and footnotes,
excluding those in tables and figures, do not contain any mandatory
requirements.
2. Referenced Documents
2.1 ASTM Standards: 2
A 370 Test Methods and Definitions for Mechanical Testing of Steel
Products
A 700 Practices for Packaging, Marking, and Loading Methods for
Steel Products for Domestic Shipment
A 751 Test Methods, Practices, and Terminology for Chemical
Analysis of Steel Products
A 941 Terminology Relating to Steel, Stainless Steel, Related
Alloys, and Ferroalloys
2.2 Military Standards:
MIL-STD-129 Marking for Shipment and Storage3
MIL-STD-163 Steel Mill Products, Preparation for Shipment and
Storage3
2.3 Federal Standards:
Fed. Std. No. 123 Marking for Shipment3
Fed. Std. No. 183 Continuous Identification Marking of Iron and
Steel Products3
2.4 AIAG Standard:
B-1 Bar Code Symbology Standard4
3. Terminology
3.1 Definitions—For definitions of terms used in this
specification, refer to Terminology A 941.
4. Ordering Information
4.1 Orders for material under this specification shall contain
information concerning as many of the following items as are
required to describe the desired material adequately:
4.1.1 Quantity (feet or number of lengths),
4.1.2 Name of material (cold-formed tubing),
4.1.3 Method of manufacture (seamless or welded),
4.1.4 Grade (A, B, C, or D),
4.1.5 Size (outside diameter and wall thickness for round tubing,
and outside dimensions and wall thickness for square and
rectangular tubing),
4.1.6 Copper-containing steel (see Table 1), if applicable,
4.1.7 Length (random, multiple, specific; see 11.3),
4.1.8 End condition (see 16.3),
4.1.9 Burr removal (see 16.3),
4.1.10 Certification (see Section 18),
4.1.11 ASTM specification designation and year of issue,
4.1.12 End use,
4.1.13 Special requirements, and
4.1.14 Bar coding (see 19.3).
5. Process
5.1 The steel shall be made by one or more of the following
processes: open-hearth, basic-oxygen, or electric-furnace.
5.2 When steels of different grades are sequentially strand cast,
the steel producer shall identify the resultant transition material
and remove it using an established procedure that positively
separates the grades.
6. Manufacture
6.1 The tubing shall be made by a seamless or welding process.
6.2 Welded tubing shall be made from flat-rolled steel by the
electric-resistance-welding process. The longitudinal butt joint of
welded tubing shall be welded across its thickness in such a manner
that the structural design strength of the tubing section is
assured.
NOTE 2—Welded tubing is normally furnished without remo
Zhangjiagang Hua Dong Energy Technology Co., Ltd. is a high-tech
enterprise specialized in producing all kinds of stainless, carbon
and alloy steel tubes and pipes, steel plates which are widely used
in the field of boiler&heat exchanger, energy, petrochemical,
mining, food, paper, gas and fluid industry. And we have passed the
attestations including ASME, TUV, Grade A, ISO9001, EN12952,
EN10216, SO3834.
Certification
