ASTM A3-87 Standard Spec for Steel Joint Bars, Low

1. Scope

1.1 This specification covers steel joint bars for connecting steel rails in mine, industrial, and standard railroad track.

1.2 Three grades of joint bars are defined for applications where non-heat treated bars are suitable:

1.2.1 Grade 1, low-carbon, primarily for industrial and mine use.

1.2.2 Grade 2, medium-carbon, primarily for industrial and mine use.

1.2.3 Grade 3, high-carbon, for general use in standard railroad track. They may be used in the production of insulated track joints.

1.3 The values stated 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 ASTM Standards:

A 370 Test Methods and Definitions for Mechanical Testing of Steel Products2 

2.2 U.S Military Standards:

MIL-STD-129 Marking for Shipment and Storage3

MIL-STD-163 Steel Mill Products, Preparation for Shipment and Storage3 

2.3 U.S. Federal Standards:

Federal Standard No. 123 Marking for Shipments (Civil Agencies)3

3. Ordering Information

3.1 Orders for joint bars under this specification shall Include the following information as appropriate:

3.1.1 Quantity—number of pairs of bars,

3.1.2 Type—design or type bar along with section designation and weight of rails being joined...

Mã tiêu chuẩn:	ASTM A3-87
Nhóm tiêu chuẩn:	ASTM A3-87
Tên văn bản(Tiếng Việt)	Standard Specification for Steel Joint Bars, Low, Medium, and High Carbon
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