GB/T 35451.1-2017 English PDFUS$439.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 35451.1-2017: Polypropylene (PP) structure-wall piping systems for underground drainage and sewerage -- Part 1: Polypropylene double wall corrugated pipes Status: Valid
Basic dataStandard ID: GB/T 35451.1-2017 (GB/T35451.1-2017)Description (Translated English): Polypropylene (PP) structure-wall piping systems for underground drainage and sewerage -- Part 1: Polypropylene double wall corrugated pipes Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G33 Classification of International Standard: 80.140.30 Word Count Estimation: 22,264 Date of Issue: 2017-12-29 Date of Implementation: 2018-07-01 Regulation (derived from): National Standards Bulletin 2017 No. 32 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China GB/T 35451.1-2017: Polypropylene (PP) structure-wall piping systems for underground drainage and sewerage -- Part 1: Polypropylene double wall corrugated pipes---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. Polypropylene (PP) structure-wall piping systems for underground drainage and sewerage--Part 1. Polypropylene double wall corrugated pipes ICS 80.140.30 G33 National Standards of People's Republic of China Polypropylene (PP) structural wall pipe for buried drainage and sewage System Part 1. Polypropylene double wall corrugated pipe sewerage-Part 1. Polypropylenedoublewalcorrugatedpipes Released on.2017-12-29 2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration issued ForewordGB/T 35451 "Polypropylene (PP) structural wall pipe system for buried drainage and sewage disposal" is divided into two parts. ---Part 1. Polypropylene double wall corrugated pipe; --- Part 2. Polypropylene winding structural wall pipe. This part is the first part of GB/T 35451. This part is drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuer of this document is not responsible for identifying these patents. This part was proposed by the China Light Industry Federation. This part is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC48). This section drafted by. Yonggao Co., Ltd., Gudi Technology Co., Ltd., Fujian Yatong New Materials Technology Co., Ltd., Zhejiang Weixing New Building Materials Co., Ltd., Zhejiang Zhongcai Pipeline Technology Co., Ltd., Hubei Jinniu Pipe Industry Co., Ltd., Guangdong Liansu Technology Industrial Co., Ltd., Asia Pacific Group Corporation. The main drafters of this section. Huang Jian, Fu Zhimin, Chen Yu, Li Dazhi, Chen Jianchun, Zheng Wei, Zhang Weifeng, Li Yu, Sun Huan. Polypropylene (PP) structural wall pipe for buried drainage and sewage System Part 1. Polypropylene double wall corrugated pipe1 ScopeThis part of GB/T 35451 specifies the polypropylene (PP) double-wall corrugated pipe (hereinafter referred to as "pipe") for buried drainage and sewage. Language, definitions, symbols and abbreviations, materials, product classification and marking, pipe structure and connection methods, requirements, test methods, inspection rules and targets Zhi, transportation, storage. This section is applicable to non-pressure buried drainage sewage polypropylene double-wall corrugated pipe with long-term use temperature not exceeding 45 °C. Considering the chemical resistance and temperature resistance of the material, it can also be used in the underground drainage drainage pipe without pressure.2 Normative referencesThe following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. Plastics -- Determination of density of non-foam plastics -- Part 1 . Dipping method, liquid pycnometer method and titration method Determination of tensile properties of plastics - Part 2. Test conditions for moulding and extruded plastics GB/T 2828.1. Sampling procedures for sampling by sampling - Part 1 . Batch-to-batch sampling plan, searched by AQL Standard environment for GB/T 2918 plastic sample conditioning and testing GB/T 3682 Determination of melt flow rate and melt volume flow rate of thermoplastics GB/T 6111 Test method for internal pressure resistance of thermoplastic pipes for fluid transportation GB/T 8806 Plastic pipe system - Determination of dimensions of plastic parts GB/T 9341 Determination of bending properties of plastics GB/T 9345.1-2008 Determination of ash - Part 1. General method GB/T 9647 Determination of the stiffness of thermoplastic pipe rings GB/T 14152-2001 Test method for resistance to external impact of thermoplastic pipes - GB/T 18042 Test method for creep ratio of thermoplastic pipes GB/T 19278-2003 General terms and definitions for thermoplastic pipes, fittings and valves GB/T 19466.6 Plastic Differential Scanning Calorimetry (DSC) Part 6. Oxidation induction time (isothermal OIT) and oxidative induction Determination of temperature (dynamic OIT) GB/T 21873 Rubber seals, drain pipes and sewage pipes for interface seal material specifications 3 Terms and definitions, symbols and abbreviations 3.1 Terms and definitions The following terms and definitions as defined in GB/T 19278-2003 apply to this document. 3.1.1 Nominal inner diameter DN/ID The nominal size associated with the inner diameter. 3.1.2 Average outer diameter meanoutsidediameter Dem The value obtained by dividing the outer circumference of the maximum cross section of the tube (excluding the socket) by the π (3.142) is rounded up to 0.1 mm. 3.1.3 Mean inner diameter meininsidediameter Dim Two or more (two or more sets) of mutually perpendicular inner diameter arithmetic mean values are measured in the same section of the tubing (excluding the socket). 3.1.4 Mean inner diameter meininsidediameterofasocket Dim The arithmetic mean of two or more mutually perpendicular inner diameters is measured in the same section of the socket. 3.1.5 Laminated wall thickness walthicknessoftheinsidelayer(waterwaywalthickness) The thickness of the pipe wall between the corrugations of the pipe (see Figure 1). 3.1.6 Inner wall thickness walthicknessoftheinsidelayerunderaholowsection E1 The thickness of any part of the inner wall of the pipe (see Figure 1). 3.1.7 Minimum joint length of the socket minimumlengthofengagementofthesocket Amin The minimum allowable value of the length of the joint between the seal and the cylindrical end of the inner wall of the socket (see Figure 2). 3.1.8 Nominal ring stiffness SN The nominal value of the stiffness of the tubing ring obtained by rounding is usually a round integer that is easy to use. [GB/T 19278-2003, definition 6.6] 3.2 symbol The following symbols apply to this document. A. joint length Di. the inner diameter of the socket Dim. average inner diameter of the socket DN/ID. nominal size in inner diameter De. outer diameter Di. inner diameter Dim. average inner diameter e. laminated wall thickness E1. inner wall thickness L. effective length of pipe SN. nominal ring stiffness 3.3 Abbreviations The following abbreviations apply to this document. MFR. melt mass flow rate (meltmass-flowrate) OIT. oxidation induction time (oxidationinduction time) PP. Polypropylene PP-B. impact copolymerized polypropylene (polypropyleneblockcopolymer) TIR. true impact rate (trueimpactrate)4 materials4.1 Raw materials 4.1.1 Raw materials should be based on impact-resistant copolymerized polypropylene (PP-B) base resin, which can be added with antioxidants, pigments and UV-resistant to improve pipe properties. Additives such as wire (UV) stabilizers, polypropylene (PP) resin content (mass fraction) should be above 95%. 4.1.2 The properties of polypropylene (PP) base resin and raw materials shall comply with the requirements of Table 1. Table 1 Properties of polypropylene base resin and raw materials Serial number item Claim Basic resin raw material experiment method Internal pressure resistance (80 ° C, ring stress 4.2 MPa, 140 h) a Internal pressure resistance (95 ° C, ring stress 2.5 MPa, 1000 h) a No damage, no leakage, no damage, no leakage GB/T 6111, Type A sealing joint 2 Melt mass flow rate (2.16kg, 230 °C)/(g/10min) MFR ≤ 1.5 MFR ≤ 1.5 GB/T 3682 3 Thermal stability (oxidation induction time,.200 ° C, aluminum dish)/min ≥ 20 ≥ 20 GB/T 19466.6 4 Flexural modulus/MPa ≥ 1500 ≥ 1500 GB/T 9341 5 Tensile strength/MPa ≥ 25 ≥ 25 GB/T 1040.2 6 Density/(kg/m3) 895 ~ 910 895 ~ 920 GB/T 1033.1- 2008, Method A 7 Ash/% ≤1.0 ≤3.0 GB/T 9345.1-2008 a Tests should be made with solid walls made of the appropriate materials. 4.2 Recycling materials It is permissible to use clean reclaimed materials from pipes that are in compliance with this part of the factory. The amount of recycled materials (mass fraction) should not exceed Over 5%. 4.3 Elastic seals Elastomeric seals shall comply with the requirements of GB/T 21873.5 Product Classification and Marking5.1 Classification Pipes can be classified into 4 grades according to the nominal ring stiffness classification, as shown in Table 2. Table 2 Nominal ring stiffness rating Rating SN8 SN10 SN12.5 SN16 Nominal ring stiffness/(kN/m2) 8 10 12.5 16 5.2 Marking Double wall corrugated pipe □ Material code Nominal size Ring stiffness rating This part number Example. PP double-wall corrugated pipe with a nominal inner diameter of 500 mm and a ring stiffness rating of SN8 is marked as.6 Pipe structure and connection method6.1 Pipe structure A typical pipe structure is shown in Figure 1. Description. Di --- the inner diameter of the socket; De --- the outer diameter of the pipe; Di --- the inner diameter of the pipe; e --- laminated wall thickness; E1 --- inner wall thickness; E2 --- wall thickness of the socket; L --- effective length of the pipe. Figure 1 Schematic diagram of pipe structure 6.2 Connection method Pipes are generally connected by means of inserts with elastic sealing rings. The typical connection is shown in Figure 2. Can also use it He connected. Description. A --- joint length; Di --- The inner diameter of the socket. Figure 2 Typical pipe connection diagram7 requirements7.1 color The inner and outer layers of the pipe should be uniform in color. The outer layer of the pipe is generally green, orange-brown or gray, and the inner layer is generally white. other The color can be agreed between the supplier and the buyer. 7.2 Appearance No bubbles, depressions, obvious impurities and irregular ripples are allowed on the inner and outer walls of the pipe. Both ends of the pipe should be flat, perpendicular to the axis, and inserted The mouth is located in the valley area. The outer wall of the tube trough should be tightly welded and there should be no disengagement. 7.3 Geometric dimensions 7.3.1 General The pipe size is expressed by the nominal inner diameter (DN/ID inner diameter series). 7.3.2 Length The effective length L of the pipe is generally 6m, and the other lengths are determined by negotiation between the supplier and the buyer. The length is not allowed to have a negative deviation. 7.3.3 Size The dimensions of the pipe shall comply with the requirements of Table 3, and the minimum average inner diameter of the socket shall not be less than the maximum average outer diameter of the pipe, and the wall thickness of the socket shall not Less than 75% of the wall thickness of the laminate. Other dimensions are agreed between the supplier and the purchaser or given by the manufacturer. Table 3 The dimensions of the pipe are in millimeters Nominal inner diameter DN/ID Minimum average inner diameter Dim,min Minimum laminated wall thickness Emin Minimum joint length of the socket Amin Minimum inner wall thickness E1,min 100 95 1.0 32 1.0 125 120 1.2 38 1.0 150 145 1.3 43 1.0 200 195 1.5 54 1.1 225 220 1.7 55 1.2 250 245 1.8 59 1.4 300 294 2.0 64 1.4 400 392 2.5 74 2.0 500 490 3.0 85 2.2 600 588 3.5 96 2.5 800 785 4.5 118 3.0 1000 985 5.0 140 4.0 1200 1185 5.0 162 4.0 The tolerance of the outer diameter of the pipe shall meet the following requirements. ---dem, min≥0.994×de; ---dem, max≤1.003×de. Where de is the outer diameter specified by the pipe manufacturer, and the calculation result retains one decimal place. 7.4 Physical and mechanical properties of pipes The physical and mechanical properties of the pipe shall comply with the requirements of Table 4. Table 4 Physical and mechanical properties of pipes Project requirements test method Density/(kg/m3) 895 ~ 920 See 8.4 Ash /% ≤3 See 8.5 Oxidation induction time (200 ° C, aluminum dish)/min ≥ 20 See 8.6 Ring stiffness/(kN/m2) ≥ the corresponding nominal ring stiffness rating requirements see 8.7 Impact performance (TIR) /% ≤ 10 See 8.8 The inner wall of the flexible sample of the ring is smooth, the inner and outer walls are not broken, and the two walls are not disengaged. See 8.9. The oven test has no bubbles, no delamination, no cracking, see 8.10 Creep ratio ≤ 4 See 8.11 7.5 System Suitability When the pipe is connected by elastic sealing ring, the system suitability test shall be carried out according to the requirements of Table 5. Table 5 System suitability Project test conditions require test methods Elastic seal Sealing Condition B. Radial deformation Deformation at the joint seal. 5% Pipe deformation. 10% Temperature. (23 ± 2) ° C Condition C. angular deviation De≤315, 2° 315 \u003cde≤630,1.5° 630 \u003cde,1° Temperature. (23 ± 2) ° C Lower hydrostatic pressure (15min) 0.005MPa no leakage Higher hydrostatic pressure (15min) 0.05MPa no leakage Internal negative pressure (15min)-0.03MPa ≤-0.027MPa Lower hydrostatic pressure (15min) 0.005MPa no leakage Higher hydrostatic pressure (15min) 0.05MPa no leakage Internal negative pressure (15min)-0.03MPa ≤-0.027MPa See 8.128 test methods8.1 Condition adjustment and test environment Unless otherwise specified, the sample shall be subjected to state adjustment and test in the environment of (23 ± 2) °C according to the provisions of GB/T 2918. The time should not be less than 24h; when the nominal diameter of the pipe sample is >500mm, the state adjustment time should not be less than 48h. 8.2 Color and appearance Visual inspection. 8.3 Dimensional measurement 8.3.1 Effective length According to the position shown in Figure 1, according to the provisions of GB/T 8806, the effective length of the pipe is measured with a gauge with an accuracy of not less than 1 mm. 8.3.2 Average inner diameter According to the provisions of GB/T 8806, two or more pipes of the same cross section perpendicular to each other are measured with gauges with an accuracy of not less than 1 mm. The inner diameter value, with its arithmetic mean as the average inner diameter of the tube. 8.3.3 Wall thickness According to the provisions of GB/T 8806, the wall thickness of the laminate and the inner wall thickness are measured with a gauge having an accuracy of not less than 0.02 mm. 8.3.4 Joint length As shown in Fig. 2, the joint length was measured with a gauge having an accuracy of not less than 0.02 mm. 8.4 Density The test was carried out according to Method A of GB/T 1033.1-2008. 8.5 Ash The test was carried out in accordance with the method of Method A of GB/T 9345.1-2008, and the calcination temperature was 850 °C. 8.6 Oxidation induction time According to the provisions of GB/T 19466.6, the inner wall of the pipe should be sampled. 8.7 Ring stiffness Test according to the provisions of GB/T 9647. When the average length of the sample is less than 290mm, a ripple should be added (the average length can be exceeded) Over 310mm). The cutting point should be in the middle of the trough when sampling. 8.8 Impact performance 8.8.1 Sample When the nominal diameter of the pipe is ≤500mm, it shall be sampled according to GB/T 14152-2001; when the pipe nominal diameter is >500mm, it can be diced. experimenting. The size of the sample block is. length (200±10) mm, inner chord length (300±10) mm, and the outer diameter of the sample block should be circular. On the upper side, the two ends are placed horizontally on the bottom plate, and the impact point should be ensured as the top end of the corrugation. 8.8.2 Test procedure The test was carried out in accordance with the provisions of GB/T 14152-2001. The hammer type of the drop hammer was d90. Test temperature is (0 ± 1) ° C, with V-type support Plate, drop weight and impact height are shown in Table 6. Table 6 Drop weight and impact height Nominal inner diameter Mm Drop hammer quality Kg Impact height Mm DN/ID≤110 0.5 1600 110 \u003cDN/ID≤125 0.8.2000 125 \u003cDN/ID≤160 1.0.2000 160 \u003cDN/ID≤200 1.6.2000 200 \u003cDN/ID≤250 2.0.2000 250 \u003cDN/ID≤300 2.5.2000 DN/ID >300 3.2.2000 8.8.3 Determination Visually, the sample was cracked, cracked, or cracked in the inner wall after impact. According to the number of sample damage, GB/T Figure 2 or Table 5 of 14152-2001 determines the TIR value. 8.9 Ring flexibility 8.9.1 Sample Take 3 sections of the sample of length (300±20)mm from the same pipe, and both ends should be perpendicular to the axis, if the cutting position is not at the trough. Extended to the trough. 8.9.2 Test procedure Tests shall be carried out in accordance with the provisions of GB/T 9647, and the test force shall be continuously increased. When the sample is deformed in the vertical direction, the outer diameter is the original outer diameter. Immediately unload at 30%, observe whether the inner wall of the sample remains smooth, whether the inner and outer walls are broken, and whether the two walls are disengaged. 8.10 Oven test 8.10.1 Sample Take 3 sections of pipe (300±20) mm long, and cut the pipe with the nominal inner diameter ≤400mm into two samples of the same size along the axial direction; When the pipe nominal diameter is >400mm, four samples of the same size are cut along the axial direction. 8.10.2 Test procedure Set the oven temperature to (150 ± 2) ° C. After the temperature is reached, place the samples in the oven so that they do not touch each other and do not contact the oven wall. Contact. When the laminated wall thickness e ≤ 8mm, it is placed at (150 ± 2) °C for 30min; when the laminated wall thickness e > 8mm, at the same temperature After standing for 60 min, it was observed after cooling to room temperature, and the sample was unqualified if delamination, cracking or foaming occurred. 8.11 Creep ratio Test according to the provisions of GB/T 18042. The test temperature was (23 ± 2) ° C, calculated and extrapolated to a creep ratio of two years. 8.12 System Suitability According to the provisions of Appendix A.9 Inspection rules9.1 Batch The same specification of pipes produced in the same batch of raw materials, formulas and processes is a batch. When the nominal diameter of the pipe is ≤500mm, the number of batches is The amount does not exceed 60t. If the production is still less than 60t for 7 days, the batch is 7 days; when the nominal diameter of the pipe is >500mm, the quantity of each batch is not More than 300t. If the production for 30 days is still less than 300t, the batch will be produced in 30 days. 9.2 Factory inspection 9.2.1 The factory inspection items are ring stiffness, ring flexibility and oven test in 7.1, 7.2, 7.3 and Table 4. 9.2.2 In 7.1, 7.2 and 7.3, except for the laminated wall thickness and the inner wall thickness, the test shall be carried out according to GB/T 2828.1, and the normal test shall be used for sampling. For the sample plan, take the general inspection level I, the acceptance quality limit (AQL) 4.0, and the values of N, n, Ac, and Re are shown in Table 7. Table 7 The sampling plan unit is root batch Sample size Qualified judgment number Ac Number of unqualified judgments Re 2~15 2 0 1 16~25 3 0 1 26~90 5 0 1 91~150 8 1 2 151~280 13 1 2 281~500 20 2 3 501~1200 32 3 4 1201~3200 50 5 6 3201~10000 80 7 8 9.2.3 In the samples that pass the 9.2.2 sampling inspection,......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 35451.1-2017_English be delivered?Answer: Upon your order, we will start to translate GB/T 35451.1-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 35451.1-2017_English with my colleagues?Answer: Yes. 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