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GB/T 17505-1998 English PDF (GBT17505-1998)

GB/T 17505-1998 English PDF (GBT17505-1998)

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GB/T 17505-1998: Steel and steel products - General technical delivery requirements

This Standard specifies the general technical delivery requirements of all steel and steel products included in GB/T 15574, except cast steel and sintered metal products.
GB/T 17505-1998
eqv ISO 404.1992
Steel and Steel Products ?€?
General Technical Delivery Requirements
Issued by. State Bureau of Quality and Technical Supervision
Table of Contents
Foreword ... 3
ISO Foreword ... 4
1 Scope ... 5
2 Normative references ... 5
3 Definitions ... 6
4 Order Content ... 8
5 Production Process ... 9
6 Goods supplied by the Processors or Middleman ... 10
7 Requirements ... 10
8 Inspection and Testing ... 11
9 Re-classification and Rework ... 17
10 Markings ... 17
11 Objections ... 17
This Standard equivalently adopts ISO 404.1992 "Steel and Steel Products - General Technical Delivery Requirements".
The main technical contents of this Standard, such as production process, goods delivered by processors or middleman, requirements, inspection and testing, classification and re-processing, marking and objections, equivalently adopts ISO 404. According to China's actual situation, this Standard adds the provisions of, namely, the requirements that the white flake is not allowed to be re-inspected. In the meanwhile, the referenced international standards are changed into the relevant national standards; and Annex A (Informative) "Reference" and Annex B (Informative) "Primary Standards of Steel Test and Analysis" are deleted.
This Standard must be used together with other technical standards; as a supplement, it cannot be used independently for order.
This Standard was proposed by and shall be under the jurisdiction of the National Steel Standardization Technical Committee.
Main drafting organization of this Standard. China Metallurgical Information and Standardization Research Institute.
Main drafting staffs of this Standard. Wang Limin and Luan Yan.
Steel and Steel Products ?€?
General Technical Delivery Requirements
1 Scope
This Standard specifies the general technical delivery requirements of all steel and steel products included in GB/T 15574, except cast steel and sintered metal products. When the provisions of the product standard or the agreement of the contract are not consistent with the provisions of this Standard, the requirements shall be based on the product standard and the contract agreement.
2 Normative references
The following standards contain the provisions which, through reference in this text, constitute the provisions of this Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision; the parties who reach an agreement based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
GB/T 222-1984 Method of Sampling Steel for Determination of Chemical
Composition and Permissible Variations for Product Analysis
GB/T 2975-1998 Steel and Steel Products - Location and Preparation of Test Pieces for Mechanical Testing
GB/T 13304-1991 Steels - Classification
GB/T 15574-1995 Steel Products Classification and Definitions
GB/T 19001-1994 Quality Systems - Model for Quality Assurance in Design, Development, Production, Installation and Servicing
GB/T 19002-1994 Quality Systems - Model for Quality Assurance in Production, Installation and Servicing
GB/T 19003-1994 Quality Systems - Model for Quality Assurance in Final
Inspection and Test
YB/T 081-1996 Rule for Rounding Off of Numerical Values and Judgement of Testing Values for Technical Standards of Metallurgy
3 Definitions
Except the definitions specified in GB/T 13304 and GB/T 15574, this Standard shall also adopt the following definitions.
3.1 Inspection
Inspection refers to the activity that determines, inspects, tests and measures one or more of characteristic values of a sort of product or service, and makes comparison with the specified value, so as to determine whether this activity is eligible. 3.2 Testing
Testing refers to all operations or activities for the determination of one or more of performance and characteristic values of a sort of material or product. 3.3 Continuous Inspection
Continuous inspection refers to the characteristic value of bulked products with long manufacturing cycle and implementing the same standard, or the routine inspection and testing made by process parameter. The testing and inspection are made according to the procedures agreed on by both the supplier and the purchaser, of which the following content shall be included.
a) The characteristic value or process parameter of the testing or inspection; b) Product condition of the testing and inspection;
c) The assessment of the test result (routine statistical assessment);
d) The user is entitled with the legal testing and inspection rights.
3.4 Non-specific Inspection and Testing
Non-specific inspection and testing refers to the inspection and testing made by the set procedure, so as to judge whether the products produced by the same production process meets the requirements of the contract. The inspected and tested products may not be the actual supplied products.
3.5 Specific Inspection and Testing
Specific inspection and testing refers to the inspection and testing made on the delivered products or parts of the products based on the technical requirements of the contract before the delivery, so as to verify whether they meet the requirements of the contract.
The contract shall clearly indicate all contents that are required to describe the product features and the following details related to the delivery.
a) Delivery weight, length, area and quantity;
b) Product shape (such as. drawing number);
c) Nominal dimension;
d) Tolerance of characteristic values a) and c);
e) Grade of steel;
f) Delivery state (such as heat treatment and surface-treatment ways);
g) Special requirements of surface and internal quality (see 7.4);
h) The type of the document requires inspection, and the inspection and testing requirements not specified in the product standard (see Chapter 8);
i) If necessary, quality assurance system of any applied one of GB/T 19001, GB/T 19002 and GB/T 19003 may be adopted;
j) Marking, packaging and shipping;
k) Any selection requirements proposed by the product standard or any additional provisions not included in the product standard.
4.2 The contents that shall be specified in Article 4.1.
a) Adopt one or several national (industry) standards;
b) When standards are not available, the characteristic value and clauses specified in the contract;
c) In case the standard cited in the contract is not indicated with date of issuance, the effective version when signing the contract shall be adopted. In the event of any objections to the current standard version, the version used shall be negotiated by supplier and purchaser.
5 Production Process
Unless there is an agreement when ordering, or as otherwise provided in the product standards, the manufacturing process shall be selected by the production plant. Note. The manufacturing process includes all the processes from the steel-making to the products delivery.
be denoted by all single test average values measured by
7.4 Surface quality and internal quality
7.4.1 General requirements
All products shall be good in quality, if slight surface or internal defects arisen from normal production condition, this cannot be used as the reason for rejection. If necessary, the specific requirements of the surface quality and internal quality shall refer to the corresponding standards, which shall be determined by negotiation when signing the contract.
7.4.2 Flaw detection
If necessary, the special techniques adopted for the defects detection (such as X-ray inspection, ultrasonic inspection and magnetic particle inspection), the product quantity of the test unit and methods for test result handling shall all be determined according to the provisions of product standard or negotiated through ordering. 7.4.3 Discontinuous removal of surface
Unless otherwise specified in the standards or contract, the discontinuity of the surface may be removed by mechanical methods and other methods, but the product size and performance shall be ensured to comply with the limitation stipulated in the contract, product standard, dimensional standard or surface quality standard. 7.4.4 Weld repairs
If the product standard or contract allows the weld repair, the user and inspection representative shall allow the sectional repair for all or parts of the delivered batches with welding method.
8 Inspection and Testing
8.1 Type of Inspection Document, Inspection and Testing

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