Standard No.:	GB/T 25854-2010
Chinese Name:	一般起重用D形和弓形锻造卸扣
English Name:	Forged shackles for general lifting purposes—Dee shackles and bow shackles
Professional Classification:	J80 Hoisting machinery
ICS Classification:	53.020.30 Accessories for lifting equipment
Issued by:
Issued on:	2011-01-10
Implemented on:	2011-06-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:	10000 words
Price(USD):	300 (USD)
Delivery:	via email in 1-3 business day

1 Scope

This Standard specifies the general characteristics of forged dee and bow shackles in Grades 4, 6 and 8, and presents their performance and critical dimensions necessary for their interchangeability and compatibility with other components.
This Standard is applicable to the forged dee and bow shackles in a range of sizes having working load limits of from 0.32 t to 100 t.
In the case of dee shackles for use with forged steel lifting hooks in conformance with GB/T 24812 and GB/T 24813, an intermediate component could be necessary for making the connection.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 193 General Purpose Metric Screw Threads — General Plan (GB/T 193-2003, ISO 261:1998, MOD)
GB/T 197-2003 General Purpose Metric Screw Threads — Tolerances (ISO 965-1:1998, MOD)
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 231.1 Metallic Materials — Brinell Hardness Test — Part 1: Test Method) (GB/T 231.1-2002, eqv ISO 6506-1:1999)
GB/T 6394-2002 Metal-methods for Estimating the Average Grain Size (ASTM E112:1996, MOD)
GB/T 13304.1 Steels Classification — Part 1: Classification of According to Chemical Composition (GB/T 13304.1-2008, ISO 4948-1:1982, MOD)
GB/T 24812.4 Forged Steel Lifting Hooks with Point and Eye for Use with Steel Chains of Grade 4 (GB/T 24812-2009, ISO 4779:1986, IDT)
GB/T 24813.8 Forged Steel Lifting Hooks with Point and Eye for Use with Steel Chains of Grade 8 (GB/T 24813-2009, ISO 7597:1987, IDT)

3 Terms and Definitions