GB/T 38097-2019Urban heating—Prefabricated directly buried insulating pipes and fittings with polyurethane(PUR) foamed-plastics and glass fiber reinforced plastics protect layers (English PDF)
城镇供热 玻璃纤维增强塑料外护层聚氨酯泡沫塑料预制直埋保温管及管件
This is a limited preview
Buy now to download the full PDF (17 pages)
Need quotation for your management?
Get a formal quotation for GB/T 38097-2019 in 30 minutes.
Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 18, 2019
Implementation date
September 1, 2020
Scope
GB/T 38097-2019 is the English-translated version of 城镇供热 玻璃纤维增强塑料外护层聚氨酯泡沫塑料预制直埋保温管及管件.
GB/T 38097-2019 is the Chinese standard "Urban heating—Prefabricated directly buried insulating pipes and fittings with polyurethane(PUR) foamed-plastics and glass fiber reinforced plastics protect layers".
Its scope clause reads: This standard specifies the terms and definitions, construction, requirements, test methods, inspection rules, marking, transportation and storage of prefabricated directly buried insulating pipes and fittings with polyurethane (PUR) foamed-plastics and glass fiber reinforced plastics protect layers.
This standard is applicable to the prefabricated directly buried insulating pipes and fittings whose conveying medium temperature (long-term operating temperature) is not higher than 120 °C and accidental peak temperature is not higher than 140 °C. Its clauses include terms and definitions; construction.
Found what you need?
Document preview — GB/T 38097-2019
National Standard of the People's Republic of China
- ICS
- 91.140.10
- Classification
- P 46
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword i
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Construction
- 5 Requirements
- 5.1 Working steel pipe
- 5.2 Steel pipe fittings
- 5.3 Protect layer
- 5.4 Insulating layer
- 5.5 Insulating pipe
- 5.6 Insulating pipe fittings
- 5.7 Insulating joint
- 6 Test methods
- 7 Inspection rules
- 7.1 End-of-manufacturing inspection
- 7.2 Type inspection
- 8 Marking, transportation and storage
- 8.1 Marking
- 8.2 Transportation
- 8.3 Storage
- Annex A (Normative) Manufacture of insulating joint
- Annex B (Normative) Test method for Barcol hardness of protect layer
- Bibliography
1 Scope
This standard specifies the terms and definitions, construction, requirements, test methods, inspection rules, marking, transportation and storage of prefabricated directly buried insulating pipes and fittings with polyurethane (PUR) foamed-plastics and glass fiber reinforced plastics protect layers.
This standard is applicable to the prefabricated directly buried insulating pipes and fittings whose conveying medium temperature (long-term operating temperature) is not higher than 120 °C and accidental peak temperature is not higher than 140 °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 3091 Welded steel pipes for low pressure liquid delivery
GB/T 8163 Seamless steel tubes for liquid service
GB/T 8237 Liquid unsaturated polyester resin for fiber reinforced plastics
GB/T 8923.1-2011 Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous
GB/T 9711 Petroleum and natural gas industries - Steel pipe for pipeline transportation systems
GB/T 12459 Steel buttwelding pipe fittings - Types and parameter
GB/T 13401 Steel buttwelding pipe fittings - Technical specification
GB/T 18369 Glass fiber roving
GB/T 18370 Glass fibre woven roving
GB/T 29046-2012 Test methods of technical specification for pre-insulated directly buried district heating pipes
GB/T 29047-2012 Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casing pipes
GB 50236 Code for construction of field equipment, industrial pipe welding engineering
CJJ/T 254 Technical specification for leakage surveillance system of directly buried heating pipe
NB/T 47013.2 Nondestructive testing of pressure equipment - Part 2: Radiographic testing
NB/T 47013.3 Nondestructive testing of pressure equipment - Part 3: Ultrasonic testing
NB/T 47014 Welding procedure qualification for pressure equipment
SY/T 5257 Steel bends for oil and gas transmission
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 29047-2012 and the following apply.
3.1
long term mechanical properties of casing long-term aging resistance of the casing material assessed based on the time of brittle failure of the material under the accelerated test condition at certain stress, temperature and medium environment
3.2 bend angle deviation
difference between the nominal bend angle of elbow or bend and the measured bend angle of product
4 Construction
4.1 Prefabricated directly buried insulating pipes with polyurethane (PUR) foamed-plastics and glass fiber reinforced plastics protect layers (hereinafter referred to as "insulating pipes") or insulating fittings shall be of a trinity structure in which working steel pipes or steel pipe fittings, insulating layers and protect layers are closely fitted, and trestles and alarm lines can be set in the insulating layers.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
Similar standards
How to Download GB/T 38097-2019
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GB/T 10003-2026 — Biaxially oriented polypropylene (BOPP) film
GB/T 10004-2026 — Plastic/Plastic laminated films and pouches for packaging
GB/T 10007-2026 — Rigid cellular plastics - Determination of shear properties
Secure payment via Stripe
Payments accepted
GB/T 38097-2019
$295.00