GB/T 1301-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 1301-2025	RFQ	ASK	3 days	Hollow drill steels for rock drilling	Valid
GB/T 1301-2008	165	Add to Cart	Auto, < 3 mins	Hollow drill steels for rock drilling	Valid
GB/T 1301-1994	279	Add to Cart	3 days	Rock drilling equipment. Hollow drill steels in bar form	Obsolete
GB 1301-1987	199	Add to Cart	2 days	Hollow rock drill steel	Obsolete

Basic data

Standard ID: GB/T 1301-2025 (GB/T1301-2025)
Description (Translated English): Hollow drill steels for rock drilling
Sector / Industry: National Standard (Recommended)
Date of Implementation: 2026-03-01
Older Standard (superseded by this standard): GB/T 1301-2008

GB/T 1301-2008: Hollow drill steels for rock drilling

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Hollow drill steels for rock drilling ICS 77.140.60 H44 National Standards of People's Republic of China Replacing GB/T 1301-1994 Drilling hollow steel drill rod (ISO 722.1991, Rockdrilingequipment-Holowdrilsteels inbarform, hexagonalandround, MOD) Posted 2008-08-19 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts ISO 722.1991 "Rock Drilling --- drill rod with hexagonal and circular hollow steel steel" (in English). This standard is based on ISO 722.1991 redrafted, according to the actual situation of China's rock drill rod hollow steel production in the adoption of this standard It was revised international standards. These technical differences are mainly as follows. --- Increased the content technical requirements, test methods, inspection rules, packaging, marking and quality certificate; --- Hexagonal hollow steel Nominal size 38, 45 delete, an increase of 35 specifications; --- Circular hollow steel increased R39-, R46-, R52- specifications; --- Basic size allowable deviation is divided into two levels, ISO 722 is only one level. This standard replaces GB/T 1301-1994 "hollow rock drill rod steel." Compared with the standard GB/T 1301-1994 The main changes are as follows. --- Adjust the classification codes and the content portion; --- Changed the rock drill rod hollow steel code, the original hex code B to H, round to code D R; --- Nominal dimension value represents Specification Code; --- Adjust the size, shape and tolerances portion; --- Increased grades ZK95CrMo, ZK40SiMnCrNiMo, ZK23CrNi3Mo, ZK22SiMnCrNi2Mo, deleted ZKT8; --- Increased requirements for low magnification organizations; --- Tightened requirements for bending, hardness, decarbonization layer; --- Increased the content packaging, marking and quality certificate. The standard proposed by China Iron and Steel Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee. This standard is mainly drafted by. Guiyang Special Steel Co., Ltd. Participated in the drafting unit. Iron and Steel Research Institute, Metallurgical Industry Information Standards Institute, Guizhou, accounting for Group of Industries Limited. The main drafters of this standard. Wang Chou-seng, Zhang Ji Zhou, Tianqiao Li, Hou right, Dong Xin industry, Bo. This standard replaces the standards previously issued as follows. --- GB 1301-1987, GB/T 1301-1994. Drilling hollow steel drill rod

1 Scope

This standard specifies the rock drill rods with hexagonal and circular hollow steel and classification code, size, shape and tolerances, technical requirements, test Test methods, inspection rules, packaging, marking and quality certification. This standard applies to rock drill rods with hexagonal and circular hollow steel.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 222 chemical composition of finished steel tolerance Determination of chromium content GB/T 223.11 Methods for chemical analysis of iron, steel and alloy The ammonium persulfate oxidation volumetric method GB/T 223.14 Methods for chemical analysis of iron, steel and alloys, tantalum reagent extraction and spectrophotometric determination of vanadium content GB/T 223.23 Methods for chemical analysis of iron, steel and alloy dimethylglyoxime spectrophotometric determination of nickel content Determination of nickel content GB/T 223.25 Methods for chemical analysis of iron, steel and alloy dimethylglyoxime gravimetric method Spectrophotometric determination of molybdenum content GB/T 223.26 Methods for chemical analysis of iron, steel and alloy The thiocyanate direct GB/T 223.53 Methods for chemical analysis of iron, steel and alloys by flame atomic absorption spectrophotometric method for determination of copper content GB/T 223.60 Methods for chemical analysis of iron, steel and alloy perchloric acid dehydration gravimetric method for the determination of silicon content GB/T 223.62 Methods for chemical analysis of iron, steel and alloy butyl acetate extraction spectrophotometric determination of phosphorus content GB/T 223.63 Methods for chemical analysis of iron, steel and alloy The sodium (potassium) for Determination of amount Determination of sulfur content of potassium iodate titration method after GB/T 223.68 Methods for chemical analysis of iron, steel and alloy tube furnace combustion After the determination of carbon content - Gravimetric method GB/T 223.71 Methods for chemical analysis of iron, steel and alloy tube furnace combustion GB/T 223.75 Methods for chemical analysis of iron, steel and alloy methanol distillation - curcumin spectrophotometric determination of boron content Determination of depth of decarburization GB/T 224 steel GB/T 226 steel macrostructure and defect etching test method GB/T 230.1 Metallic Rockwell hardness test - Part 1. Test methods (A, B, C, D, E, F, G, H, K, N, T scale) (GB/T 230.1-2004, ISO 6508-1.1999, MOD) General provisions GB/T 2101 steel acceptance, packaging, marking and quality certificate GB/T 4336 carbon steel and low alloy steel spark source atomic emission spectrometry method (conventional method) GB/T 20066 Steel and iron - Sampling and determination of the chemical composition of the sample with a sample preparation method (GB/T 20066-2006, ISO 14284. 1996, IDT)

3 Classification and designation

3.1 hollow steel according to shape into hexagonal and circular. 3.2 Main specification code shall be in accordance with Table 1. 3.3 Other specifications hollow steel specifications and reference code can be specified in Table 1. ......

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