1. General
This standard specifies the technical requirements, inspection methods, inspection rules and marking, packaging, transportation and storage of groove steel for tractor beam of agricultural tractors.
2. Normative References
The following documents are indispensable for the application of this document. For dated references, only the edition dated applies to this document. For undated references, the latest edition of the documents referred to applies to this document.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223 Methods for Chemical Analysis of Iron, Steel and Alloy
GB/T 228 Metallic Materials—Tensile Testing at Ambient Temperature
GB/T 229 Metallic Materials—Charpy Pendulum Impact Test
GB/T 702 Hot-Rolled Channel Steel
GB/T 1184-1980 Universal Modulus of Elasticity and Coefficients of Thermal Expansion for Steel
GB/T 1345-2005 Steel Bars—Determination of Compressive Yield Strength
GB/T 1346-1991 Methods of Calculating and Expressing the Effect of Edge Conditions on the Local Stiffness Characteristics of sheet and Strip Made of Cold-Rolled Steels
GB/T 1844-2009 Ferronickel
GB/T 20066 Steel and Iron—Sampling and Preparation of Samples for the Determination of Chemical Composition
3. Terminology
The following terms and definitions apply to this document.
3.1
Groove steel for tractor beam
Steel for tractor beam with groove that process by forging or rolling
3.2
Test piece
Section of a steel product from which a sample is extracted for testing
4. Technical Requirements
4.1 Chemical composition
The chemical composition of groove steel for tractor beam shall conform to the requirements of Table 1.
Table 1—Chemical Composition
5. Inspection Method
5.1 Chemical composition
The chemical composition of groove steel for tractor beam shall be determined in accordance with the methods stipulated in GB/T 20066.
5.2 Mechanical properties
The mechanical properties of groove steel for tractor beam shall be determined in accordance with the methods stipulated in GB/T 1345-2005, GB/T 1184-1980, GB/T 1346-1991 and/or GB/T 229.
6. Inspection Rules
The quality of groove steel for tractor beam shall be inspected in accordance with the rules stipulated in GB/T 222 and/or GB/T 223.
7. Marking, Packaging, Transportation and Storage
7.1 Marking
The marking of groove steel for tractor beam shall comply with the requirements of GB/T 1844-2009.
7.2 Packaging
The packaging of groove steel for tractor beam shall conform to the requirements of GB/T 1844-2009.
7.3 Transportation and storage
The transportation and storage of groove steel for tractor beam shall comply with the requirements of GB/T 1844-2009.
