GB/T 19472.2-2017 PDF English
US$500.00 · In stock · Download in 9 secondsGB/T 19472.2-2017: Polyethylene structure-wall piping systems for underground usage - Part 2: Polyethylene spirally enwound structure-wall pipes Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 19472.2: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 19472.2-2017 | English | 500 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Polyethylene structure-wall piping systems for underground usage - Part 2: Polyethylene spirally enwound structure-wall pipes
| Valid |
| GB/T 19472.2-2004 | English | RFQ |
ASK
|
5 days
|
Polyethylene structure-wall piping system for underground usage -- Part 2: Polyethylene spirally enwound structure-wall pipes
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 19472.2-2017
GB/T 19472.2-2017: Polyethylene structure-wall piping systems for underground usage - Part 2: Polyethylene spirally enwound structure-wall pipes
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT19472.2-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.140.30
G 33
Replacing GB/T 19472.2-2004
Polyethylene structure-wall piping systems for underground
usage - Part 2.Polyethylene spirally enwound structure-wall
pipes
Issued on. DECEMBER 29, 2017
Implemented on. JULY 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms, definitions, symbols and abbreviated terms... 6
4 Raw materials... 10
5 Pipe classification and identification... 11
6 Structure types and connection methods... 11
7 Requirements... 16
8 Test methods... 22
9 Inspection rules... 25
10 Marking, transportation and storage... 27
Appendix A (Informative) Other characteristics of raw materials of PE pipes and pipe
fittings... 28
Appendix B (Informative) Schematic diagram of typical pipe fittings... 29
Appendix C (Informative) Schematic diagram of the connection methods of pipes and
pipe fittings... 31
Appendix D (Normative) Preparation method of tensile test samples... 34
Appendix E (Normative) Sealing test method for elastic sealing ring joints... 37
References... 45
1 Scope
This Part of GB/T 19472 specifies the terms and definitions, symbols, abbreviations,
raw materials, pipe classification and identification, structure types and connection
methods, requirements, test methods, inspection rules, marking, transportation and
storage of polyethylene spirally enwound structure-wall pipes and pipe fittings for
underground usage.
This Part applies to structure-wall pipes and pipe fittings (or solid-wall pipe fittings)
processed by using polyethylene (PE) resin as the main raw material, and polyolefin
material as the auxiliary support structure, and using the winding molding process.
The pipes and pipe fittings specified in this Part are applicable to underground drainage,
sewage and other projects where the long-term operating temperature is below 45 °C.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 1033.1-2008, Plastics - Methods for determining the density of non-cellular
plastics - Part 1.Immersion method liquid pyknometer method and titration method
GB/T 2828.1-2012, Sampling procedures for inspection by attributes - Part 1.
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 2918-1998, Plastics - Standard atmospheres for conditioning and testing
GB/T 3682-2000, Determination of the melt mass-flow rate (MFR) and the melt
volume-flow rate (MVR) of thermoplastics
GB/T 6111-2003, Thermoplastics pipes for the conveyance of fluids - Resistance to
internal pressure - Test method
GB/T 6671-2001, Thermoplastics pipes - Determination of longitudinal reversion
GB/T 8804.3-2003, Thermoplastic pipes - Determination of tensile properties - Part
3.Polyolefin pipes
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
Terms and definitions determined by GB/T 19278-2003, and the following ones are
applicable to this document.
3.1.1
spirally enwound structure-wall pipes
Pipes made by using the filament winding process, with polyolefin material as an
auxiliary support structure.
3.1.7
mean inside diameter
dim
Arithmetic mean of two or more measured values of inside diameter that are
perpendicular to each other.
Note. Rewrite definition 3.11 in GB/T 19278-2003.
3.1.8
wall thickness
The wall thickness measured at any point on the circumference of the pipe or fitting.
3.1.9
structure height
ec
Radial distance between the inner and outer surfaces of the pipe wall (type A structure-
wall pipes), or between the inner surface of the pipe wall and the top of the rib (type B
or type C structure-wall pipes).
3.1.10
inner wall thickness
e4
The wall thickness at any point between the spiral O-shaped ribs of type B and type C
pipes and fittings.
3.1.11
inner wall of the cavity part thickness
e5
The wall thickness between the lower inner wall and the inner surface of any cavity part
of type A pipes and fittings.
3.2 Symbols
The following symbols apply to this document.
3.3 Abbreviated terms
For the purposes of this document, the following abbreviated terms apply.
4 Raw materials
4.1 The raw materials used in the production of pipes and pipe fittings are mainly
polyethylene (PE) resin, to which only necessary additives can be added. The
performance of raw materials shall meet the requirements of Table 1.See Appendix A
for other characteristics of raw materials.
4.2 The materials of elastomeric sealing elements shall comply with the requirements
specified in GB/T 21873-2008.
5 Pipe classification and identification
5.1 Pipe classification
5.1.1 Pipes classified by nominal ring stiffness grade
The nominal ring stiffness of pipes is divided into 6 grades, as shown in Table 2.
5.1.2 Pipes classified by structure types
Pipes are divided into type A, type B and type C according to their structure types, as
shown in 6.1.
5.2 Pipe identification
Pipes are identified as follows.
Spirally enwound structure-wall pipes
6 Structure types and connection methods
6.1 Structure types of pipes
6.1.1 Type A structure-wall pipes
6.1.1.1 Pipes with flat inner and outer surfaces and made of polyethylene materials
spirally welded between preformed polyethylene square pipes. Typical example 1 is
shown in Figure 1.
6.1.1.2 On the preheated integral steel drum mold, use the filament-wound and
processed pipes whose inner surface is smooth and flat, outer surface is flat, and pipe
wall is embedded with spirally wound O-shaped polyolefin material (generally
polypropylene) as auxiliary supports for hollow pipes.
6.1.2 Type B structure-wall pipes
On the preheated integral steel drum mold, use the filament-wound and processed pipes
whose inner surface is smooth and flat and outer surface is spiral O-shaped ribs. And
the O-shaped rib of the pipe shall have a hollow pipe with polyolefin material (usually
polypropylene) as auxiliary support.
6.1.3 Type C structure-wall pipes
On multiple rollers in the cold state, use the continuously wound and processed pipes
whose inner surface has a contour of slight peaks and troughs, and the outer surface is
spiral O-shaped ribs.
7 Requirements
7.1 Color
The color of pipes and pipe fittings is generally black, and other colors are determined
by negotiation between the supply and demand parties.
7.2 Appearance
7.2.1 The inner and outer surfaces of pipes and pipe fittings in typical example 1 of type
A structure-wall pipes shall be flat.
7.3 Dimensions
7.3.1 Length
The effective length L of the pipe is generally 6 m, and other lengths are agreed upon
by both parties. There shall be no negative deviation in the effective length of the pipe.
7.4 Physical and mechanical properties
7.4.1 Physical properties of pipes
The physical properties of pipes shall meet the requirements of Table 6.
7.4.2 Mechanical properties of pipes
The mechanical properties of pipes shall comply with the requirements in Table 7.
8 Test methods
8.1 Pre-conditioning of samples
Unless otherwise specified, the samples shall be conditioned and tested in accordance
with the provisions of GB/T 2918-1998 at 23 °C ± 2 °C.
8.2 Color and appearance
By visual inspection, the interior can be illuminated by a light source.
8.3 Dimensions
8.4 Longitudinal retraction rate
Conduct the test according to method B specified in GB/T 6671-2001.Cut three
sections of samples from different parts of a pipe, with a length of 200 mm ± 20 mm.
In case of pipe DN/ID < 400 mm, it can be cut into two test blocks of the same size
along the axial direction; in case of pipe DN/ID ≥ 400 mm, it can be cut into 4 (or more)
test blocks of the same size along the axial direction.
8.5 Oven test
8.6 Ash
Conduct the test according to GB/T 9345.1-2008.Use the direct calcination method.
The sampling location is any place on the inner, outer wall or spigot end of the pipe
(excluding auxiliary support structures).
8.7 Oxidation induction time
Conduct the test according to GB/T 19466.6-2009.Samples shall be taken from the
inner and outer walls of the pipe (excluding auxiliary support structures), with the
original surface facing upwards for testing. The number of samples is 3, and the test
result is the minimum value.
8.10 Impact performance
8.10.1 Conduct the test according to GB/T 14152-2001.The test temperature is 0 °C ±
1 °C; the hammer model is d 90; the mass and impact height of the hammer are shown
in Table 10.
8.14 System suitability
8.14.1 Sealing property of elastomeric sealing elements
Follow the provisions of Appendix E. See Table 9 for the test parameters.
8.14.2 Tensile force of welded connections
Conduct the test according to GB/T 8804.3-2003.Prepare the samples according to
Figure D.2 in Appendix D.
9 Inspection rules
9.1 Batch
Pipes and pipe fittings of the same specifications produced with the same raw materials,
formulas and processes are considered to be one batch. When pipes and pipe fittings
DN/ID ≤ 500 mm, the quantity per batch shall not exceed 60 t.
9.3 Exit-factory inspection
9.3.1 The ex-factory inspection items are the items specified in 7.1 ~ 7.3, and the ash
content, oxidation induction time, density, ring stiffness, ring flexibility and tensile
force test at the welding point in 7.4.
9.4 Type inspection
9.4.1 Type inspection items are all items required by the technical requirements in
Chapter 7.
9.4.2 Select pipes and pipe fittings of any specification from the size groups specified
in 9.2, and inspect items 7.1 ~ 7.3 according to the provisions of 9.3.2.Among the pipes
and pipe fittings that pass the inspection, randomly select a sample and conduct each
test in 7.4 ~ 7.5.Generally, type inspection is conducted every three years. If one of the
following situations occurs, type inspection shall be carried out.
9.5 Determination rules
Items 7.1 ~ 7.3 are determined according to Table 12.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 19472.2-2017 be delivered?Answer: The full copy PDF of English version of GB/T 19472.2-2017 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 19472.2-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 19472.2-2017_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 19472.2-2017 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version GB/T 19472.2-2017?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 19472.2-2017 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of GB/T 19472.2-2017?A step-by-step guide to download PDF of GB/T 19472.2-2017_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 19472.2-2017".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|