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JG/T 148-2018: Steel tube radiator
Status: Valid JG/T 148: Evolution and historical versions
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Basic data | Standard ID | JG/T 148-2018 (JG/T148-2018) | | Description (Translated English) | Steel tube radiator | | Sector / Industry | Building & Construction Industry Standard (Recommended) | | Classification of Chinese Standard | Q83 | | Classification of International Standard | 91.140.10 | | Word Count Estimation | 13,125 | | Date of Issue | 2018-05-30 | | Date of Implementation | 2018-12-01 | | Older Standard (superseded by this standard) | JG/T 148-2002; JG/T 1-1999 | | Quoted Standard | GB/T 191; GB/T 700; GB/T 1732; GB/T 2828.1; GB/T 4956; GB/T 5213; GB/T 7306.1; GB/T 9286; GB/T 9969; GB/T 12467.3; GB/T 13754; GB/T 19866; GB/T 29039; HG/T 2006 | | Regulation (derived from) | Ministry of Housing and Urban-Rural Development Announcement No. 98 of 2018 | | Issuing agency(ies) | Ministry of Housing and Urban-Rural Development of the People's Republic of China | | Summary | This standard specifies the terms and definitions, classification and marking, materials and structures, requirements, test methods, inspection rules, signs, instructions for use and certification, packaging, transportation and storage of steel pipe radiators (hereinafter referred to as "heat sinks"). This standard applies to industrial and civil building heating systems, with a temperature not higher than 95 �� C and water quality in accordance with the provisions of GB / T 29044-2012 4.5 hot water as a heat sink. | JG/T 148-2018: Steel tube radiator---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.
Steel tube radiator
ICS 91.140.10
Q83
People's Republic of China Construction Industry Standard
Replacing JG/T 1-1999, JG/T 148-2002
Steel pipe radiator
Published on.2018-05-30
2018-12-01 implementation
Ministry of Housing and Urban-Rural Development
Content
Foreword I
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Classification and Marking 2
5 Materials and Structures 2
6 Requirements 4
7 Test method 6
8 Inspection rules 7
9 logo, instruction manual and certificate 8
10 Packaging, transportation and storage 9
Reference 10
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces JG/T 1-1999 "Steel Column Radiator" and JG/T 148-2002 "Steel Tube Radiator".
This standard is a revision of JG/T 1-1999 "Steel Column Radiator" and JG/T 148-2002 "Steel Tube Radiator", and
The main technical changes compared to JG/T 1-1999 and JG/T 148-2002 are as follows.
--- Added terms and definitions;
--- Added classification;
--- Modified the mark;
--- Increased materials and structure;
---Modified work pressure;
---Modified the standard heat dissipation of a single piece;
---Modified the thread quality requirements;
--- Modified the method for determining the adhesion of the coating;
--- Added inspection item list;
--- Modified the inspection sampling plan;
--- Added instructions for use.
This standard was proposed by the Institute of Standardization of the Ministry of Housing and Urban-Rural Development.
This standard is under the jurisdiction of the Building Environment and Energy Conservation Standardization Technical Committee of the Ministry of Housing and Urban-Rural Development.
This standard was drafted. China Building Metal Structure Association, Sender (China) HVAC Equipment Co., Ltd., Tianjin Martin Kanghua Stainless Steel
Products Co., Ltd., Guangdong Sun Flower Heating Equipment Co., Ltd., Tangshan Datong Metal Products Co., Ltd., Shannan Southeast Mountain Heating Co., Ltd.
Division, Beijing Paijie HVAC Environmental Engineering Technology Co., Ltd., Harbin Maoershan Radiator Co., Ltd., Shandong Xinhuaxing HVAC Technology
Company, Beijing St. Lawrence Radiator Manufacturing Co., Ltd., Henan Ganfeng HVAC Technology Co., Ltd., Shanxi Qingxu Xuedong Radiator
Company, Zhejiang Rongrong Industrial Co., Ltd., Qingdao Yirun HVAC Equipment Co., Ltd., Henan Ward New Century Energy Co., Ltd., Henan
Hongxing HVAC Equipment Co., Ltd., Tianjin Zeao Metal Products Co., Ltd., Wangkui Longda Metal Products Co., Ltd., Fengrun District, Tangshan City
Xin Metal Products Co., Ltd., Beijing Building Materials Inspection and Research Institute Co., Ltd., China Academy of Building Research Ltd., National Radiator
Quality Supervision and Inspection Center, Liaoning Province Plumbing Equipment Product Quality Supervision and Inspection Center.
The main drafters of this standard. Song Weimin, Wu Huimin, Wang Junsheng, Gu Xiuzhi, Liu Zongjiang, Yuan Xiangyang, Li Cheng, Lin Biao, Yang Xueyong,
Luo Weidong, Yu Keyue, Han Peibin, Wang Yitang, Liang Bin, Lu Tongxin, Yang Gang, Guan Zhonghai, Zhao Xuedong, Tian Lin, Yao Limin, Hou Qingxia, Wang Zengjun,
Wang Hongchun, Wang Zhibo, Niu Yongjie.
The previous versions of the standards replaced by this standard are.
---JG J29.1-1986;
---JG/T 1-1999;
---JG/T 148-2002.
Steel pipe radiator
1 Scope
This standard specifies the terms and definitions, classification and marking, materials and structures, requirements, and tests of steel pipe radiators (hereinafter referred to as "heat sinks").
Methods, inspection rules, signs, instructions for use and certification, packaging, transportation and storage.
This standard applies to industrial and civil building heating systems, with a temperature not higher than 95 ° C and water quality in accordance with GB/T 29044-2012
4.5 The hot water specified is the heat sink of the heat medium.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 191 packaging storage and transportation icon
GB/T 700 carbon structural steel
GB/T 1732 paint film impact resistance test
GB/T 2828.1. Sampling procedures for sampling by sampling - Part 1 . Batch-to-batch sampling plan, searched by AQL
GB/T 4956 magnetic substrate on non-magnetic covering layer thickness measurement magnetic method
GB/T 5213 cold rolled low carbon steel plate and strip
GB/T 7306.1 55° sealed pipe threads - Part 1. Cylindrical internal and conical external threads
GB/T 9286 color and varnish paint film cross-cut test
GB/T 9969 General guidelines for the use of industrial products
GB/T 12467.3 Welding quality requirements for metallic materials - Part 3. General quality requirements
GB/T 13754 heating radiator heat dissipation method
GB/T 19866 Welding procedure specification and general principles of assessment
GB/T 29039 steel heating radiator
HG/T.2006 thermosetting powder coating
3 Terms and definitions
The following terms and definitions as defined in GB/T 29039 apply to this document.
3.1
A heat sink formed by a combination of a column steel tube and an upper and lower sheet head or a header tube.
3.2
Title terminal
The cold-rolled steel sheet is formed by stamping and is welded to the steel pipe to form a component of the steel heating radiator.
Note. The film head formed by two materials is a combined film head, and the film head formed by a single piece of material is an integral film head.
3.3
Single piece standard heat dissipation standardheatemissionperunitradiator
The average value of the standard heat dissipation measured by the sample is measured as the average of the number of pieces.
3.4
Single length singlecolumnlength
The actual length of the single piece is processed.
3.5
Combination length combinationlength
The actual length of the heat sink that is welded from multiple pieces.
4 Classification and marking
4.1 Classification
4.1.1 The radiator shall be divided into 300mm, 400mm, 500mm, 600mm, 900mm and 1200mm according to the center distance of the inlet and outlet of the same side.
1500mm and 1800mm.
4.1.2 The heat sink is divided into round tube column type, elliptical tube column type and elliptical tube overlapping type according to the structure type, and the codes are YZ, TZ and TD respectively.
4.2 Marking
Example.
The number of single-column columns is 3, the width is 100mm, the center-side inlet and outlet is 500mm, and the working pressure is 1.0MPa.
For. GYZ3-100/500-1.0.
5 Materials and Structure
5.1 Materials
5.1.1 Steel pipes shall be cold-rolled DC01 or other materials of equivalent performance and shall comply with the provisions of GB/T 5213.
5.1.2 The film head shall be cold-rolled DC03 or other materials of equivalent performance and shall comply with the provisions of GB/T 5213.
5.1.3 The material of the radiator threaded nozzle shall comply with the provisions of Q235B of GB/T 700.
5.1.4 The radiator coating shall be environmentally friendly non-metallic coating and shall comply with HG/T.2006.
5.2 Structure
The structure of the radiator is shown in Figure 1.
a) Round tube type radiator
b) elliptical tubular radiator
c) Single row elliptical tube lap type radiator
Figure 1 Schematic diagram of the heat sink structure
d) Double row elliptical tube lap type radiator
Description.
L --- combined length;
H --- height;
H1---the same side inlet and outlet center distance;
B --- width.
Figure 1 (continued)
6 requirements
6.1 Working pressure
The working pressure of the radiator should be no more than 1.0MPa.
6.2 Single piece standard heat dissipation
The standard heat dissipation of the heat sink shall not be less than the requirements of Table 1, Table 2 and Table 3.
Table 1 The standard heat dissipation unit of a single-tube tubular steel pipe radiator is watt
Ipsilateral inlet and outlet
Center distance H1/mm
300 400 500 600 900 1200 1500 1800
Width B/mm
65 23 29 36 41 57 74 90 107
100 33 40 49 58 77 100 123 146
137 39 50 60 71 96 126 155 184
Note. The take-over mode is the same side up and down, the excess temperature ΔT=44.5K.
Table 2 The standard heat dissipation unit of the elliptical pipe-column steel pipe radiator is watt
Ipsilateral inlet and outlet
Center distance H1/mm
300 400 500 600 900 1200 1500 1800
Width B/mm 80
Elliptical tube
Outer diameter/mm
50×25 32 43 54 63 87 114 142 171
60×30 38 52 65 76 104 137 171 206
Note. The take-over mode is the same side up and down, the excess temperature ΔT=44.5K.
Table 3 The standard heat dissipation unit of the oval tube lap type steel tube radiator is watt
Ipsilateral inlet and outlet
Center distance H1/mm
300 400 500 600 900 1200 1500 1800
Width B/mm
62 27 32 38 43 57 74 90 107
84 38 45 54 65 88 115 143 170
Note 1. The outer diameter of the elliptical tube in the table is 50mm×25mm, and the way of taking over is the same side up and down, and the excess temperature is ΔT=44.5K.
Note 2. The widths in the table are single row elliptical pipe lap type and double row elliptical pipe lap type.
6.3 Material size
6.3.1 The wall thickness of the finished tube of the radiator shall be not less than 1.2mm; the wall thickness of the elliptical tube shall be not less than 1.5mm. Working pressure is 1.0MPa
When the outer diameter is 60 mm × 30 mm, the elliptical tube wall thickness should be not less than 1.8 mm.
6.3.2 The wall thickness of the round tube type of the finished product of the radiator shall be not less than 1.0mm; the wall thickness of the elliptical tube type head shall be not less than 1.5mm.
6.4 Welding quality
6.4.1 The welding quality of the radiator shall comply with the provisions of GB/T 12467.3 and GB/T 19866.
6.4.2 The welding should be firm, the weld should be smooth and smooth, and there are no defects such as cracks, pores, penetration and burn through.
6.4.3 After welding, the heat sink should be flat, uniform and beautiful, without obvious deformation and distortion.
6.4.4 There shall be no free residual slag in the radiator after welding. The minimum equivalent diameter of the elliptical pipe lap type water flow channel shall not be less than 8mm.
6.5 thread quality
6.5.1 The radiator interface shall be threaded and the thread shall be complete and shall be free from defects.
6.5.2 Radiator threaded nozzles shall be RP1⁄, RP, RP1.
6.5.3 Thread making accuracy should meet the requirements of GB/T 7306.1.
6.6 Coating quality
6.6.1 The surface coating of the radiator should be even and smooth, and should not leak or blister.
6.6.2 The thickness of the coating shall not be less than 80 μm.
6.6.3 The coating adhesion rating shall comply with the Class 2 requirements specified in GB/T 9286.
6.6.4 The impact resistance of the coating shall comply with the provisions of GB/T 1732.
6.7 Dimensions and limit deviation
6.7.1 The outer diameter of the elliptical pipe lap type header pipe shall not be less than φ40mm.
6.7.2 The limit deviation of the heat sink dimensions shall comply with the requirements of Table 4.
Table 4 Dimensional limit deviation unit is mm
Same side inlet and outlet center distance H1 height/H width B combination length L
Basic size limit deviation basic size limit deviation basic size limit deviation basic size limit deviation
300≤H1< 500 ±2
500≤H1< 900 ±3
900≤H1≤1800 ±4
H1 (35~
100)
±3
±4
±5
B≤100 ±3 L≤1000 ±4
B >100 ±4 L >1000 ±5
6.7.3 The shape tolerance of the radiator shall comply with the requirements of Table 5.
Table 5 Geometric tolerances in millimeters
project
Flatness verticality
L≤1000 L >1000 L≤1000 L >1000
Shape tolerance ≤4 ≤6 ≤4 ≤6
7 Test methods
7.1 Working pressure
7.1.1 The test pressure of the radiator shall be 1.5 times the working pressure.
7.1.2 The pressure of the radiator should be tested by water pressure or air pressure test on a special test bench; the accuracy of the pressure gauge should not be lower than
Level 1.5, the range should be 2.5MPa.
7.1.3 The voltage regulation time should be 2min during the water pressure test, the radiator should not pass the leakage; the pressure regulation time should be 1min, the radiator
No bubbles in the test tank are qualified.
7.1.4 The finished radiator should be tested by air pressure; if hydraulic pressure test is used, the water remaining in the inner cavity should be dried after the test.
7.2 Single piece standard heat dissipation
The heat dissipation test shall comply with the provisions of GB/T 13754. When the center of the inlet and outlet of the same side is 300mm ≤ H1 ≤ 600mm, check
The length of the test sample combination shall be 10 pieces; when the center distance of the same side inlet and outlet is 900mm ≤ H1 ≤ 1800mm, the test sample combination length shall be
It is 5 pieces.
7.3 Material size
7.3.1 The wall thickness of the finished steel pipe of the radiator shall be tested by a vernier caliper with an accuracy of 0.02 mm.
7.3.2 The wall thickness of the finished radiator head shall be checked by wall thickness micrometer or wall thickness gauge.
7.4 Welding quality
7.4.1 The welding quality of round tube and elliptical tube type radiators shall be verified by visual inspection.
7.4.2 The welding quality of the elliptical pipe lap type radiator shall be checked by visual inspection, and then the vernier caliper with an accuracy of 0.02 mm shall be used.
test.
7.5 Thread quality
The thread quality of the radiator interface shall be visually inspected and then inspected by a Class B thread gauge.
7.6 Coating quality
7.6.1 The surface quality of the coating shall be examined by visual inspection.
7.6.2 The thickness of the coating shall be inspected in accordance with the provisions of GB/T 4956.
7.6.3 Coating adhesion shall be tested in accordance with the provisions of GB/T 9286.
7.6.4 The impact resistance of the coating shall be tested in accordance with the provisions of GB/T 1732. The diameter of the steel ball on the punch shall be 20 mm, and the height of the weight shall be
500mm.
7.7 Dimensions and limit deviation
7.7.1 The diameter of the elliptical pipe lap type header pipe shall be checked by a universal gage with an accuracy of 0.02 mm.
7.7.2 The limit deviation of the heat sink dimensions shall be checked by a universal gage with an accuracy of 0.02 mm.
7.7.3 The shape tolerance of the radiator shall be checked by means of a square, a feeler gauge and a platform of not less than three stages.
8 Inspection rules
8.1 Inspection classification
The radiator inspection is divided into factory inspection and type inspection.
8.2 Factory inspection
8.2.1 Each group of radiators shall pass the inspection after passing the inspection by the quality inspection department of the manufacturer.
8.2.2 The factory inspection shall be carried out in groups according to the items specified in Table 6.
Table 6 Test item list
Serial number inspection item factory inspection type inspection requirements test method remarks
1 Working pressure 〇〇 6.1 7.1
2 Monolithic standard heat dissipation - 〇6.2 7.2
3 Material Size - 〇6.3 7.3
4 Welding quality 〇〇 6.4 7.4 Factory inspection without water flow channel equivalent diameter
5 thread quality 〇〇 6.5 7.5
6 coating quality
Surface quality 〇〇 6.6.1 7.6.1
Coating thickness - 〇6.6.2 7.6.2
Adhesion - 〇6.6.3 7.6.3
Impact resistance - 〇 6.6.4 7.6.4
7 Dimensions and limit deviation 〇〇 6.7 7.7 Factory inspection does not include lapped header tube diameter
Note. “〇” is a mandatory item; “-” is a non-inspection item.
8.3 Type test
8.3.1 A type test shall be carried out in any of the following cases.
a) when new products are transferred or produced to trial production;
b) when the radiator is subject to major changes in the design, process or materials used;
c) when production is suspended for more than one year and then resumed;
d) every 4 years during continuous production;
e) When the factory inspection result is significantly different from the previous one.
8.3.2 Type inspection shall be carried out in accordance with the items specified in Table 6.
8.3.3 Type inspection shall be carried out according to the general inspection level I specified in GB/T 2828.1, using the normal inspection once or sub-sampling plan, inspection
The acceptance quality limit of the inspection project shall comply with the provisions of Table 7.
Table 7 Inspection sampling plan
batch
Sample size
code
Sample size
Grand total
Sample size
Receive quality limit AQL
Work pressure
Center distance
Thread quality
Welding quality
Material size
Coating quality
and others
1.0 4.0 6.5 15
Ac Re Ac Re Ac Re Ac Re
51~90 C
the first
second
(5)
(0 1) (0 1)
(1 2)
(twenty three)
91~150 D
the first
second
(8)
(0 1)
(1 2)
(1 2)
(3 4)
151~280 E
the first
second
(13)
(0 1)
(1 2)
(twenty three)
(5 6)
Note. Ac-received number, Re-rejected number; the value in parentheses is the value of a sampling plan with normal test.
8.3.4 The standard heat dissipation of a single piece shall be checked from any one of the sampled samples. After the test, the standard heat dissipation of the single piece shall comply with the provisions of 6.2.
It is determined that the standard heat sink of the batch heat sink is qualified.
9 logo, instruction manual and certificate
9.1 mark
Each set of radiators should have a clear, strong manufacturer's logo in a prominent position.
9.2 User's Manual
Each batch of products should be accompanied by product samples and instructions for use. The instructions for use should comply with the provisions of GB/T 9969 and should include at least
Column content.
a) work pressure;
b) heat dissipation characteristic formula;
c) resistance coefficient;
d) weight;
e) water capacity;
f) installation operation points;
g) The working environment of the radiator, applicable to water quality and usage requirements.
9.3 Certificate
Each set of radiators shall be accompanied by a product certificate and shall include at least the following contents.
a) the name of the manufacturer;
b) product name and model number;
c) the implementation of the standard number;
d) Inspection time, inspector marking and date of manufacture.
10 Packaging, transportation and storage
10.1 Packaging
10.1.1 The radiator package should be made of recyclable materials and should comply with the provisions of GB/T 191.
10.1.2 The radiator should be packaged without damage to the quality of the product.
10.1.3 Protective measures should be taken for the radiator interface threads.
10.2 Transportation
10.2.1 Rain and moisture proof measures should be taken when transporting radiators.
10.2.2 During transportation and handling, it should not be crushed by bumps and other heavy objects, and should not be mixed with chemicals that affect the coating.
10.3 Storage
The radiator should be stored in an air-dry warehouse, and should not be in contact with corrosive media. The stacking height should not exceed 2m, and the bottom should be firm.
The height is 100mm~200mm.
references
[1] GB/T 29044-2012 Heating and air conditioning system water quality
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