Standard No.:	HG/T 21574-2008
English Name:	Chemical equipment lifting lugs and engineering technical specification
Chinese Name:	化工设备吊耳及工程技术要求
Chinese Classification:	G91    Chemical machinery and equipment parts
Professional Classification:	HG    Professional Standard - Chemistry
Issued by:	NDRC
Issued on:	2008-04-23
Implemented on:	2008-10-1
Status:	superseded
Superseded by:	HG/T 21574-2018 Standard for design and selection of chemical equipment lifting lugs
Superseded on:	2018-9-1
Superseding:	HG/T 21574-1994 化工设备吊耳及工程技术要求
Language:	English
File Format:	PDF
Word Count:	25000 words
Price(USD):	620.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the classification, type codes, size, materials, technical requirements and marking of lifting lugs for lifting chemical equipment or equipment components. This standard is applicable to the equipment lifting lugs of carbon steel, low alloy steel and stainless steel containers, tower vessels and their component for lifting during equipment installation. 2 Normative References The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies GB 150-1998 Steel Pressure Vessels GB/T 196 General Purpose Metric Screw Threads-Basic Dimensions GB/T 197 General Purpose Metric Screw Threads-Tolerances GB/T 700-2006 Carbon Structural Steels GB/T 1804 General Tolerances-Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications GB/T 3274-2007 Hot-rolled Plates and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels GB/T 4237-2007 Hot Rolled Stainless Steel Plate Sheet and Strip GB 6654-1996 Steel Plates for Pressure Vessels GB/T 8162-1999 Seamless Steel Tubes for Structural Purposes HG 20581-1998 Specification for Materials Selected of Steel Chemical Vessels JB/T 4730-2005 Nondestructive Testing of Pressure Equipment 3 Classification Five categories (eight types) of lifting lugs are listed in this standard, i.e.: Top plate-type lifting lug (Type TP and Type TPP); Horizontal vessel plate-type lifting lug (Type HP); Sidewall type lifting lug (Type SP); Shaft type lifting lug (Type AXA, Type AXB and Type AXC); Tail lifting lug (Type AP).

1 Scope 2 Normative References 3 Classification 4 Technical Requirements 4.1 Lifting Lug Materials 4.2 Machining and Assembling of Lifting Lugs 4.3 Inspection of Lifting Lugs 5 Marking 5.1 Marking Method 5.2 Marking Examples 6 Top Plate-type Lifting Lug (Type TP/TPP) 6.1 Selection and Description 6.2 Structure Type and Dimension Series 6.3 Setting Position and Quantity 7 Horizontal Vessel Plate-type Lifting Lug (Type HP) 7.1 Selection and Description 7.2 Structure Type and Dimension Series 7.3 Setting Position and Quantity 8 Sidewall Type Lifting Lug (Type SP) 8.1 Selection and Description 8.2 Structure Type and Dimension Series 8.3 Setting Position and Quantity 9 Shaft Type Lifting Lug (Type AX) 9.1 Selection and Description 9.2 Structure Type and Dimension Series 9.3 Setting Position and Quantity 9.4 Setting of Thickened Segment 10 Tail Lifting Lug (Type AP) 10.1 Selection and Description 10.2 Structure Type and Dimension Series 10.3 Setting Position and Quantity Appendix A (Informative) Examples for Strength Calculation of Lifting Lug A.1 Determination of Comprehensive Influence Coefficient A.2 Strength of Lifting Lug A.3 Calculation Examples of Lifting Lug Strength Explanation of Wording in This Standard