ASTM A2-90 Standard Spec for Carbon Steel Girder Rails

1. Scope

1.1 This specification covers carbon steel girder rails2 of three classes based on type or type and weight, and chemistry defined as follows and in Table 1:

1.1.1 Unless otherwise specified by the purchaser, girderguard rails shall be Class A.

1.1.2 Plain and grooved-girder rails under 135 lb/yd (67.1 kg/m) in weight shall be specified by the purchaser as either Class A or Class B.

1.1.3 Plain and grooved-girder rails of 135 lb/yd in weight and heavier shall be Class C, unless otherwise specified.

1.2 The values states in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

2. Referenced Documents 

2.1 U.S. Military Standards:

MIL-STD-129 Marking for Shipment and Storage3

MIL-STD-163 Steel Mill Products, Preparation for Shipment and Storage

2.2 U.S. Federal Standard:

Federal Standard No. 123 Marking for Shipments (Civil Agencies)

3. Classification of Rails

3.1 No. 1 Rails—Rails that are free of injurious imperfections and flaws of all kinds.

3.2 No. 2 Rails—Rails that contain surface imperfections in such number or of such character that shall not, in the judgment of the inspector, render them unfit for recognized uses.

4. Ordering Information

4.1 Orders for girder rails under this specification shall include the following information as appropriate:

4.1.1 ASTM designation and date of issue...

Mã tiêu chuẩn:	ASTM A2-90
Nhóm tiêu chuẩn:	ASTM A2-90
Tên văn bản(Tiếng Việt)	Standard Specification for Carbon Steel Girder Rails of Plain
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