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GB/T 1301-2008 English PDF (GBT1301-2008)
GB/T 1301-2008 English PDF (GBT1301-2008)
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GB/T 1301-2008: Hollow drill steels for rock drilling
GB/T 1301-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 44
GB/T 1301-2008
Replacing GB/T 1301-1994
Hollow drill steels for rock drilling
(ISO 722:1991, Rock drilling equipment - Hollow drill steels in bar form, hexagonal
and round, MOD)
ISSUED ON: AUGUST 19, 2008
IMPLEMENTED ON: APRIL 01, 2009
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Classification and code ... 6
4 Dimensions, shapes and allowable deviations ... 7
5 Technical requirements ... 10
6 Test methods ... 11
7 Inspection rules ... 12
8 Packaging, marking and quality certificates ... 12
Foreword
This Standard modified and adopted ISO 722:1991 “Rock drilling equipment - Hollow
drill steels in bar form, hexagonal and round” (English version).
This Standard was redrafted based on ISO 722:1991. Based on the actual production
situation of hollow drill steels for rock drilling in China, this Standard has modified the
international standard when adopting it. The main technical differences are as follows:
- ADD the corresponding contents of technical requirements, test methods,
inspection rules, packaging, marking and quality certificates, etc.;
- DELETE 38 and 45 from the nominal dimensions of hexagonal hollow drill steels,
ADD the specification of 35;
- ADD the specifications of R39-, R46- and R52- for round hollow drill steels;
- DIVIDE the allowable deviation of basic dimension into two grades, while ISO
722 has only one grade.
This Standard replaces GB/T 1301-1994 “Rock drilling equipment - Hollow drill steels
in bar form”.
Compared with GB/T 1301-1994, the main changes of this Standard are as follows:
- ADJUST the corresponding contents of classification and code;
- MODIFY the code of hollow drill steels for rock drilling: the original hexagonal
code B is modified to H, and the round code D is modified to R;
- EXPRESS the specification code by the nominal dimension value;
- ADJUST the dimensions, shapes and allowable deviations;
- ADD the designations of ZK95CrMo, ZK40SiMnCrNiMo, ZK23CrNi3Mo,
ZK22SiMnCrNi2Mo, DELETE ZKT8;
- ADD the requirements for macrostructures;
- TIGHTEN the requirements for curvature, hardness and decarburized layer;
- ADD the corresponding contents of packaging, marking, and quality certificates.
This Standard was proposed by China Iron and Steel Association.
This Standard shall be under the jurisdiction of National Technical Committee on Steel
of Standardization Administration of China.
Hollow drill steels for rock drilling
1 Scope
This Standard specifies the classification and code, dimensions, shapes and allowable
deviations, technical requirements, test methods, inspection rules, packaging, marking
and quality certificates of hexagonal and round hollow drill steels for rock drilling.
This Standard applies to hexagonal and round hollow drill steels for rock drilling.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.11 Iron, steel and alloy - Determination of chromium content - Visual
titration or potentiometric titration method
GB/T 223.14 Methods for chemical analysis of iron, steel and alloy - The N-benzoy-
N-phenylhydroxylamine extraction photometric method for the determination of
vanadium content
GB/T 223.23 Iron, steel and alloy - Determination of nickel content - The
dimethylglyoxime spectrophotometric method
GB/T 223.25 Methods for chemical analysis of iron, steel and alloy - The
dimethylglyoxime gravimetric method for the determination of nickel content
GB/T 223.26 Iron, steel and alloy - Determination of molybdenum content - The
thiocyanate spectrophotometric method
GB/T 223.53 Methods for chemical analysis of iron, steel and alloy - The flame
atomic absorption spectrophotometric method for the determination of copper
content
GB/T 223.60 Methods for chemical analysis of iron, steel and alloy - The perchloric
acid dehydration gravimetric method for the determination of silicon content
GB/T 223.62 Methods for chemical analysis of iron, steel and alloy - The butyl
acetate extraction photometric method for the determination of phosphorus content
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium
(potassium) periodate photometric method for the determination of manganese
content
GB/T 223.68 Methods for chemical analysis of iron, steel and alloy - The potassium
iodate titration method after combustion in the pipe furnace for the determination of
sulfur content
GB/T 223.71 Methods for chemical analysis of iron, steel and alloy - The gravimetric
method after combustion in the pipe furnace for the determination of carbon content
GB/T 223.75 Iron, steel and alloy - Determination of boron content - Methanol
distillation-curcumin photometric method
GB/T 224 Determination of depth of decarburization of steels
GB/T 226 Test method for macrostructure and defect of steel by etching
GB/T 230.1 Metallic Rockwell hardness test - Part 1: Test method (scales A, B, C,
D, E, F, G, H, K, N, T) (GB/T 230.1-2004, ISO 6508-1:1999, MOD)
GB/T 2101 General requirement of acceptance, packaging, marking and certification
for section steel
GB/T 4336 Standard test method for spark discharge atomic emission spectrometric
analysis of carbon and low - Alloy steel (routine method)
GB/T 20066 Steel and iron - Sampling and preparation of samples for the
determination of chemical composition (GB/T 20066-2006, ISO 14284:1996, IDT)
3 Classification and code
3.1 Hollow drill steels are divided into hexagonal and round according to its appearance.
3.2 The main specification code shall comply with the provisions of Table 1.
3.3 The specifications and codes of other hollow drill steels can refer to the provisions
of Table 1.
Get Quotation: Click GB/T 1301-2008 (Self-service in 1-minute)
Historical versions (Master-website): GB/T 1301-2008
Preview True-PDF (Reload/Scroll-down if blank)
GB/T 1301-2008: Hollow drill steels for rock drilling
GB/T 1301-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 44
GB/T 1301-2008
Replacing GB/T 1301-1994
Hollow drill steels for rock drilling
(ISO 722:1991, Rock drilling equipment - Hollow drill steels in bar form, hexagonal
and round, MOD)
ISSUED ON: AUGUST 19, 2008
IMPLEMENTED ON: APRIL 01, 2009
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Classification and code ... 6
4 Dimensions, shapes and allowable deviations ... 7
5 Technical requirements ... 10
6 Test methods ... 11
7 Inspection rules ... 12
8 Packaging, marking and quality certificates ... 12
Foreword
This Standard modified and adopted ISO 722:1991 “Rock drilling equipment - Hollow
drill steels in bar form, hexagonal and round” (English version).
This Standard was redrafted based on ISO 722:1991. Based on the actual production
situation of hollow drill steels for rock drilling in China, this Standard has modified the
international standard when adopting it. The main technical differences are as follows:
- ADD the corresponding contents of technical requirements, test methods,
inspection rules, packaging, marking and quality certificates, etc.;
- DELETE 38 and 45 from the nominal dimensions of hexagonal hollow drill steels,
ADD the specification of 35;
- ADD the specifications of R39-, R46- and R52- for round hollow drill steels;
- DIVIDE the allowable deviation of basic dimension into two grades, while ISO
722 has only one grade.
This Standard replaces GB/T 1301-1994 “Rock drilling equipment - Hollow drill steels
in bar form”.
Compared with GB/T 1301-1994, the main changes of this Standard are as follows:
- ADJUST the corresponding contents of classification and code;
- MODIFY the code of hollow drill steels for rock drilling: the original hexagonal
code B is modified to H, and the round code D is modified to R;
- EXPRESS the specification code by the nominal dimension value;
- ADJUST the dimensions, shapes and allowable deviations;
- ADD the designations of ZK95CrMo, ZK40SiMnCrNiMo, ZK23CrNi3Mo,
ZK22SiMnCrNi2Mo, DELETE ZKT8;
- ADD the requirements for macrostructures;
- TIGHTEN the requirements for curvature, hardness and decarburized layer;
- ADD the corresponding contents of packaging, marking, and quality certificates.
This Standard was proposed by China Iron and Steel Association.
This Standard shall be under the jurisdiction of National Technical Committee on Steel
of Standardization Administration of China.
Hollow drill steels for rock drilling
1 Scope
This Standard specifies the classification and code, dimensions, shapes and allowable
deviations, technical requirements, test methods, inspection rules, packaging, marking
and quality certificates of hexagonal and round hollow drill steels for rock drilling.
This Standard applies to hexagonal and round hollow drill steels for rock drilling.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.11 Iron, steel and alloy - Determination of chromium content - Visual
titration or potentiometric titration method
GB/T 223.14 Methods for chemical analysis of iron, steel and alloy - The N-benzoy-
N-phenylhydroxylamine extraction photometric method for the determination of
vanadium content
GB/T 223.23 Iron, steel and alloy - Determination of nickel content - The
dimethylglyoxime spectrophotometric method
GB/T 223.25 Methods for chemical analysis of iron, steel and alloy - The
dimethylglyoxime gravimetric method for the determination of nickel content
GB/T 223.26 Iron, steel and alloy - Determination of molybdenum content - The
thiocyanate spectrophotometric method
GB/T 223.53 Methods for chemical analysis of iron, steel and alloy - The flame
atomic absorption spectrophotometric method for the determination of copper
content
GB/T 223.60 Methods for chemical analysis of iron, steel and alloy - The perchloric
acid dehydration gravimetric method for the determination of silicon content
GB/T 223.62 Methods for chemical analysis of iron, steel and alloy - The butyl
acetate extraction photometric method for the determination of phosphorus content
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium
(potassium) periodate photometric method for the determination of manganese
content
GB/T 223.68 Methods for chemical analysis of iron, steel and alloy - The potassium
iodate titration method after combustion in the pipe furnace for the determination of
sulfur content
GB/T 223.71 Methods for chemical analysis of iron, steel and alloy - The gravimetric
method after combustion in the pipe furnace for the determination of carbon content
GB/T 223.75 Iron, steel and alloy - Determination of boron content - Methanol
distillation-curcumin photometric method
GB/T 224 Determination of depth of decarburization of steels
GB/T 226 Test method for macrostructure and defect of steel by etching
GB/T 230.1 Metallic Rockwell hardness test - Part 1: Test method (scales A, B, C,
D, E, F, G, H, K, N, T) (GB/T 230.1-2004, ISO 6508-1:1999, MOD)
GB/T 2101 General requirement of acceptance, packaging, marking and certification
for section steel
GB/T 4336 Standard test method for spark discharge atomic emission spectrometric
analysis of carbon and low - Alloy steel (routine method)
GB/T 20066 Steel and iron - Sampling and preparation of samples for the
determination of chemical composition (GB/T 20066-2006, ISO 14284:1996, IDT)
3 Classification and code
3.1 Hollow drill steels are divided into hexagonal and round according to its appearance.
3.2 The main specification code shall comply with the provisions of Table 1.
3.3 The specifications and codes of other hollow drill steels can refer to the provisions
of Table 1.
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