HG/T 21556.4-1995 Glass fiber reinforced polypropylene ball ring packing HG/T21556.4-1995 Standard download decompression password: www.bzxz.net

Glass fiber reinforced polypropylene ball ring packing
HG/T 21556.4-95
1 Subject content and scope of application
1.0.1 This standard specifies the structural dimensions, manufacturing, inspection, packaging, storage and transportation requirements of glass fiber reinforced polypropylene ball rings (Pozigzag inner ribs) with packing diameters of 16, 25.38, 50, and 76 mm. 1.0.2 The applicable temperature range of glass fiber reinforced polypropylene ball ring packing is less than or equal to 120C. 101
GB12670wwW.bzxz.Net
JC 277
ZBG 91004
ZBG91005
ZBG91006
《Polypropylene resin》
Cited standards
《Alkali-free, twist-free glass fiber yarn》
《Drop weight impact test method for polypropylene ball ring packing》《Compression test method for polypropylene ball ring packing》《Long-term thermal deformation test method for polypropylene ball ring packing》3 Marking, specifications and characteristics
X XX.XX XPRPG-X×
Nominal diameter
Glass fiber reinforced polypropylene ball ring
Standard number
3.2 Specifications and characteristics
3.2.1 Glass fiber reinforced polypropylene ball ring is a cylinder with a plurality of windows on the surface of which the height is equal to the diameter. There are cross-shaped ribs inside, and the appearance is shown in Figure 3.2.1. D
Figure 3.2.1 Glass fiber reinforced polypropylene ball ring
In the figure: the unit of size is mm; D
-diameter; H-
height; -—wall thickness.
3.2.2 The nominal diameters of ball rings commonly used in industry are DN16, DN25, DN38, DN50, and DN76mm.
3.2.3 The main specifications and dimensions of glass fiber reinforced polypropylene ball rings shall comply with the requirements of Table 3.2.3. Table 3.2.3 Main
Glass fiber reinforced polypropylene ball ring packing specifications and dimensions
3.2.4 The characteristic parameters of glass fiber reinforced polypropylene ball rings shall comply with the requirements of Table 3.2.4. Table 3.2.4 Characteristics parameters of glass fiber reinforced polypropylene ball ring packing
True diameter×height×wall thickness
16×16×0.8
25X25×1.2
38×38×1.4
50×50×1.5
70×76×2.6
Specific surface area
(m\/m°)
Stacking number
177600
Note: The density of glass fiber reinforced polypropylene is 970kg/m2. Void ratio
(m°/m°)
Bulk density
(kg/m°)
Ovality deviation
Not more than
Dry filler factor
3.2.5 The physical and chemical performance indicators of glass fiber reinforced polypropylene ball ring can refer to the physical and chemical performance indicators of polypropylene ball ring.
4 Materials
4.0.1 The materials should be homopolymer polypropylene injection molding resin specified in GB12670 and alkali-free and untwisted glass fiber yarn specified in JC277.
4.0.2 The quality standards of glass fiber reinforced polypropylene materials should meet the requirements of Table 4.0.2. The selected materials must have a certificate of conformity and the chemical composition of the materials. 4. 0.3
Fiber content
Tensile strength
Flexural strength
Notched impact strength
Vicat heat resistance temperature
Glass fiber reinforced polypropylene resin properties
Test method
ISO527-66(E)
ISO 178-75
GB 1043—93
ASTM1525-87
kg--cm/cm2
≥120
Note: *Glass fiber reinforced polypropylene resin properties are in accordance with the quality standard of G0210S grade of Beijing Research Institute of Chemical Industry. *Glass fiber content is in accordance with the test method of Beijing Research Institute of Chemical Industry. 105
5 Manufacturing requirements
5.0.1 See Figure 5.0.1 and Table 5.0.1 for the structural dimensions of glass fiber reinforced polypropylene ball rings. Figure 5.0.1 Manufacturing dimensions of glass fiber reinforced polypropylene ball rings The dimensions in the figure are in mm, Hi-width; H window width or rib width H spacing between upper and lower rows of window holes; E upper and lower edge width: F
rib width H height D-
diameter 8
wall thickness B
window hole spacing
nominal diameter
Manufacturing dimensions of glass fiber reinforced polypropylene ball rings Hi
Processing adopts injection molding. The appearance of the finished product should be round, without warping or cracks. The surface of the filler should have no fusion marks or bubbles. The edge of the filler is required to be smooth and free of burrs. 107
6 Inspection and acceptance
6.1 Acceptance rules
6.1.1 The filler should be accepted in batches, and one size of filler can be regarded as a batch. The number of batches is shown in Table 6.1.1. When the production volume of a size of filler is less than the batch value specified in Table 6.1.1, the production volume of a size of filler can be considered as a batch.
Number of fillers in batches
Nominal diameter DN (mm)
Less than 38
Batch size (m\)
6.1.2 For fillers used for inspection, the number of samples for each batch shall not be less than 60. 6.1.3 If more than 5% of the appearance dimensions of the sampled fillers do not meet the requirements of this standard, it is necessary to double the sampling volume from the same batch of products and retest. The results of the repeated tests are applicable to the same batch of products. If the unqualified rate of the retested samples is still greater than 5%, the batch of products is unqualified. 6.2 Inspection method
6.2.1 The diameter, wall thickness and height of the fillers shall be measured with a vernier caliper, and each measurement item of each sample shall not be less than 2 measurement points. The measurement value requirements are shown in Table 3.2.3. 6.2.2 Use a vernier caliper to measure the roundness of the packing. Each sample must measure two mutually perpendicular diameters. The ovality is determined by the difference between the two mutually perpendicular diameters. The measurement value requirements are shown in Table 3.2.3. 6.2.3 Place the right angle meter on the end face of the packing, and use a feeler gauge to measure the gap between the right angle meter and the edge of the packing end face to determine the inclination deviation of the end face. The verticality deviation should be less than 1%. 108
6.2.4 Measure the drop hammer impact, compression resistance and long-term thermal deformation of the ball ring packing according to ZBG91004, ZBG91005 and ZBG91006 standards
6.2.5 When changing the shape and size of the packing, it is necessary to perform packing property tests, including fluid mechanics tests and mass transfer performance tests.
7 Marking, packaging and storage and transportation
7.1 Marking
7.1.1 The product packaging should be accompanied by a packing list and a product certificate. The product certificate should indicate: product name, specifications and dimensions, production date, physical and chemical performance test results, inspection date and seal of the inspector, and manufacturer name.
7.1.2 The outer packaging of the product should indicate: product name, mass (kg), product mark, manufacturer name, and words or signs such as "strictly prevent pollution" and "do not press heavily". 7.2 Packaging
The packaging container should be a dry box lined with polyethylene film or a polypropylene woven bag lined with polyethylene film. The packaging bag should be dustproof, and its seal should ensure that the product is not contaminated during transportation and storage. 7.2.2 The packaging container must be strong enough to withstand multiple handling and loading and unloading, and be safely and reliably transported to the destination.
7.3 Storage and transportation
7.3.1 The filler shall not be exposed to the sun or rain during transportation, and shall not be mixed with pollutants such as soil, metal, kerosene, etc. during transportation. Tarpaulin must be used when transporting by car. 7.3.2 Fillers of different specifications and sizes should be stored separately. The product should be stored in a dry and non-corrosive place. It shall not be stored when the inner packaging is damaged. 110
Proposing unit:
Editing unit:
Reviewer:
Approving person:
This standard proposes the proposing unit, editing unit
Additional notes
And the main drafters
Chemical Engineering Design Technology Center of the Ministry of Chemical Industry Chemical Engineering Design Technology Center of the Ministry of Chemical Industry Yu Hongshou Lin Jie
Xiao Chengji Tan Chong Fei Weiyang Li Chunfang
Wang Fuhua
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