GB 29039-2012Steel heating radiator (English PDF)

4.1 Classification

4.1.1 The form of the structure is divided Into steel plate radiator, columnar steel, steel radiators, convector steel and steel bathroom radiator, symbols it is represented by B, Z, G, C, W and the like.

4.1.2 According to the same side of the inlet and outlet center distance divided

Ipsilateral center distance of the inlet and outlet of the main parameters of the series, the inlet and outlet on the same side with the symbol represents the center distance.

4.1.3 Divided by the radiator flow channel thickness

Steel into a thin-walled flow passage and the radiator flow passage thick steel radiator, symbol represented by a minimum wall thickness of finished runner.

4.2 Model

Steel

structure type

The same side of the inlet and outlet center distance, mm - -Minimum wall thickness of finished radiator flow passage, mm / -Working pressure, MPa Note. the manufacturer can add other necessary information on the basis of the contents of the marker, such as size, number of sheets in combination, the amount of heat dissipation, the interface diameter, etc., in the structure in the form of heat sink may be added to represent the characteristic parameter, such as a plate type dual convection plate B22 represents a double sheet, Z3, G3 represents three columns, C2/20 represent two DN20 pipe.

Model example.

Ipsilateral export center distance of 500mm, a radiator flow passage finished minimum thickness 1.5mm, a working pressure of 0.8MPa steel three columnar radiator, which is standard Referred to as. GZ3-500-1.5/0.8.

5.1 Performance Requirements

5.1.1 Operating Pressure

Radiator minimum operating pressure should be greater than or equal to 0.4MPa, and shall meet the requirements of heating system operating pressure.

5.1.2 Standard amount of heat

Standard heat radiation amount of the radiator manufacturers express greater than or equal to 95% of the standard amount of heat.

5.1.3 Minimum metal heat intensity

The minimum strength metal heat radiator should meet the requirements of Table 1.

Table 1 minimum metal heat intensity in units of W/(kg · K)

Radiator Category

Thin-walled flow passage Columnar steel and Pipe Radiator Thick flow channel Columnar steel and Pipe Radiator Thin-walled flow passage Steel convection heat sink Thick flow channel Steel convection heat sink Steel plate heat sink Steel bathroom heat sink Minimum metal heat intensity 0.75 0.50 0.95 0.70 0.95 0.80

5.2 Material

5.2.1 Pipe

When the material for the steel pipe, thick-walled heat sink flow channel material should meet the requirements GB/T 699 or GB/T 700, the finished radiator flow channel thickness not less than 1.8mm; flow channel thin-walled heat sink material should meet the requirements of GB/T 699 are killed steel, the wall thickness of the flow channel should not be finished radiator Less than 1.0mm.

5.2.2 Steel

When made of steel, the material should meet the requirements GB/T 13237 in killed steels, the radiator flow channel material to be 1.2mm greater than the thickness, bulk Finished heat flow path wall thickness of not less than 1.0mm.

5.3 Welding quality

5.3.1 radiator welding quality should meet the requirements GB 985.1, GB/T 12467.3 and GB/T 19866's.

5.3.2 radiator should be firmly welded, the welding points should be smooth, without cracks, holes and incomplete penetration and burn-through defects.

5.3.3 welding heat sink should be flat as a whole, the appearance of smooth, uniform, neat and beautiful, without significant deformation, distortion.

5.3.4 welded should have a free residual slag within the radiator, the minimum flow passage equivalent diameter of not less than 8mm.

5.3.5 convection with a heat sink plate, high-frequency welding or other fastening methods should be used to ensure that the convection between the sheet and the pipe.

5.4 Thread quality

5.4.1 radiator interface with a threaded connection, a threaded fastener should ensure complete at least 3.5, not defective. Radiator production should be consistent thread GB/T 7307 is required.

5.4.2 Radiator connection thread should be G

4, G1, G1

4 threads.

5.5 Coating quality

5.5.1 radiator coating material should be used a thermosetting powder coating meets HG/T 2006 requirements, coating adhesion level not less than Two requirements GB/T 9286-1998 predetermined.

5.5.2 radiator impact resistance coating should conform to GB/T 1732 requirements.

5.5.3 Sanitary water resistance type radiator coating should conform to GB/T 1733 requirements.

5.5.4 using electrostatic spray before plating or surface treatment to deal with the outer surface pretreatment good radiator; surface coating Layer should satisfy the requirements of 5.6 in 9062-1999 JB/T.

Dimensions and limit deviations 5.6 Radiator dimensions and limit deviations should meet the requirements of Table 2.

Table 2 Dimensions in millimeters and the limit deviation

Height (H) width (W) on the same side Importers center distance (h) Basic size limit deviation basic size limit deviation basic size limit deviation H<=600 ± 3 W<=100 ± 3 50<=h 1000 L<=1000 L > 1000 Geometric Tolerance 4646

5.8 Other

5.8.1 radiator bleed valve should be reserved for the installation conditions.

5.8.2 Technical conditions radiator working environment should meet the requirements of Appendix A.

6.1.1 Pressure test

Radiator pressure test according to the following claims, by a hydraulic or pneumatic test group.

a) radiator test pressure is 1.5 times the working pressure, when the steel plate radiator test pressure may be special requirements to the operating pressure 1.3 times. In the steady time, the radiator does not leak or fizzy qualified. Gauge accuracy no less than 1.5, range is 2.0MPa.

b) when the hydraulic pressure test for time 2min.

c) when the test pressure radiator integrally dipped in the test tank, the steady time 1min.

6.1.2 Standard Test the amount of heat

Standard cooling the radiator should meet the requirements of the test GB/T 13754's.

6.1.3 Metal heat strength test

A metal heat spreader thermal strength test shall comply with the requirements of GB/T 13754's.

6.2 Material Inspection

Technical documents radiator flow channel thickness with a caliper or thickness test, the material properties in a variety of techniques and materials production plant to provide Prevail.

6.3 Welding quality inspection

5.3 radiator welding quality requirements should, after visual inspection using common measurement accuracy of 0.02mm.

6.4 Thread quality inspection

The radiator inlet and outlet pipe threads should visual inspection using a dedicated thread gauge.

6.5 Coating quality inspection

6.5.1 coating adhesion test shall GB/T 9286-1998 of requirements.

6.5.2 Coating impact resistance test should GB/T 1732 is required, the weight should be height 50cm.

6.5.3 bathroom radiator coating water resistance test should GB/T 1733 the requirements, using method B, the boiling water immersion test.

6.5.4 coating surface quality should visual inspection method.

6.6 Test dimensions as the limit deviation

Radiator dimensions and limit deviations should be dedicated and common measurement accuracy of 0.02mm measuring test.

6.7 Geometric tolerance test

Radiator geometric tolerance and the feeler gauge should be no less than three tests with the internet.

6.8 Other tests

Radiator bleed valve installation conditions should reserve by visual inspection method.

7.1 Inspection Classification

The test is divided into radiator factory inspection and type test.

7.2 Factory inspection

7.2.1 Each radiator factory is subject to quality inspection department after passing inspection, before the factory.

7.2.2 factory inspection in accordance with Table 4 of the project by the group tested.

Table 4 Test items list

No. Test Item Technical requirements, test methods identify category Type test Factory test Remark 1 thousand and pressure 5.1.1 6.1.1 5.1.2 6.1.2 2 billion standard amount of heat 5.1.3 6.1.3 3 billion metal heat intensity

4 Materials 5.2 6.2 thousand and factory inspection free of the wall thickness 5 5.3 6.3 thousand and weld quality Without factory inspection Water channel equivalent diameter 6 thousand and thread quality 5.4 6.4 coating Adhesion 5.5.1 6.5.1 billion 5.5.2 6.5.2 square impact resistance Water resistance 5.5.3 6.5.3 billion Only applies to Bathroom radiator 5.5.4 6.5.4 thousand and surface quality of the coating 8 dimensions and limit deviations 5.6 6.6 thousand and 9 5.7 6.7 thousand and geometric tolerance 10 5.8.1 release valve installed 6.8 thousand and conditions

7.3 Type inspection

7.3.1 the following circumstances, should be type tested.

a) the production of a new product or converting the product trial;

b) heat sink design, process or materials are used when significant changes;

c) discontinued more than a year and then resume production;

d) once every four continuous production;

E) When the last factory test results are quite different;

f) the national quality supervision agencies to proceed with a comprehensive inspection.

7.3.2 Type inspection in accordance with Table 4 of the project is examined.

7.3.3 Sampling methods.

A) The batch is less than 100 groups the radiator, the radiator of the same type of sampling less than the number of group 1;

B) When the heat sink is greater than or equal to 100 batches group, the same number of sample type radiator is not less than 2 and not less than the total amount of the model group 1%. The same model number of samples does not exceed five groups;

c) standard radiator heat dissipation and thermal strength of the metal from the sample products, optionally in a test group.

7.3.4 determination principles.

When the pressure, the standard amount of heat, thermal strength metal material and passing all four test items, and other items not more than two nonconformity when the item, determine whether the product qualified; otherwise determines that the product failed.

7.4 Inspection Report

Radiator should have a nationally recognized testing organizations through inspection report issued.

8.1 Mark

Each radiator has to be clearly apparent in its position, not easy to eliminate the signs, shall at least include.

a trademark), a factory;

b) Model.

8.2 Manual

Each batch of products should be equipped with required product samples and instructions for use, instructions for use should be consistent with GB/T 9969 requirements, the content of at least it should include.

a) radiator flow channel thickness;

b) heat dissipation characteristics standard formulas;

c) a metal heat intensity and weight of the radiator;

d) water capacity radiator;

e) mounting operation points;

f) a radiator environment and water quality requirements apply.

8.3 Certification

Each radiator factory should be accompanied by a product certificate, which shall include at least.

a) name of the manufacturer;

b) Product name and specifications;

c) type, size, operating pressure, the standard amount of heat;

d) performing the standard number;

e) the test of time, inspectors mark and the production date.

9.1 Packaging

9.1.1 radiator should adopt recyclable packaging material, and meet the requirements GB T/191.

9.1.2 The radiator should be used to ensure that the product is not deformed during transportation and handling, packaging measures do not damage the quality of products.

9.1.3 Radiator3 thread protection measures should bring.

9.2 Transport

9.2.1 Radiator transport should take rain measures.

9.2.2 shipping and handling should be avoided bump and other heavy compression and to avoid impact with the chemical coating will Mixed.

9.3 Storage

Radiator should be placed within an air drying, ventilation coffers, no contact with corrosive media. Stack height does not exceed 2m, the bottom should be stable Proper booster 100mm ~ 200mm.

Appendix A

(Normative)

Steel heating radiator working conditions Environmental Technology A.1 heat medium is water A.1.1 thin-walled flow channel steel radiator heating system should work as a closed system, the non-heating season should be full of water and maintenance. Radiator heat medium work Dissolved oxygen not more than 0.1mg/L. Response system or replenishment when the water circulating working conditions can not meet the above requirements for proper deal with.

A.1.2 thick steel radiator flow channel quality environment with reference should be thin-walled steel radiator required to perform the flow path.

When the heating medium is steam A.2 it should not be thin-walled steel radiator flow passage.

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