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GB/T 38054-2019Polyurethane part for tensioner used in offshore pipelay vessel (English PDF)

海洋铺管船用聚氨酯张紧器垫块

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 18, 2019

Implementation date

September 1, 2020

Scope

GB/T 38054-2019 is the English-translated version of 海洋铺管船用聚氨酯张紧器垫块.

GB/T 38054-2019 fixes the classification, marking, technical requirements, test methods, inspection rules and the marking, packaging, transport and storage provisions for the polyurethane tensioner pads of offshore pipelay vessels.

Clause 1 applies it to the polyurethane tensioner pads of S-type pipelay vessels and adds that the tensioner pads of J-type pipelay vessels and of cable laying ships may follow it by reference.

Clause 3 divides the pads by use into the two classes of Table 1, a wear-resistant class S-I for duties such as cement coated pipe and umbilical cable and a non-slip class S-II for uncoated pipe and PP or PE coated pipe, and describes the pad as a metal base plate carrying a polyurethane layer, as shown in Figures 1 and 2.

The normative references are largely rubber test methods, including GB/T 528 for tensile stress-strain properties, GB/T 529 for tear strength, GB/T 1681 for rebound resilience, GB/T 1689 for abrasion resistance on an Akron machine, GB/T 3512 for hot air accelerated ageing, GB/T 15254 for the 180-degree peel test of rubber bonded to metal and HG/T 2729-2012 for the coefficient of friction, alongside GB/T 1804-2000 and GB/T 3672.1-2002 on tolerances, GB/T 5721 on the marking, packaging, transport and storage of rubber sealing products, and HG/T 4077-2009 on anti-corrosion coating.

The standard was proposed by the China Petroleum and Chemical Industry Federation and is under the jurisdiction of the National Rubber and Rubber Products Standardization Technical Committee (SAC/TC35); its drafters are rubber and plastics manufacturers together with Offshore Oil Engineering Co., Ltd. and engineering and transmission firms.

It carries ICS code 83.140.99 and Chinese classification G47, was issued on 18 October 2019 and has applied since 1 September 2020.

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Document preview — GB/T 38054-2019

National Standard of the People's Republic of China

ICS: 83.140.99
Classification: G 47

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Classification and structure

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the classification, marking, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage for polyurethane pipe tensioner blocks (hereinafter referred to as blocks) for marine pipe laying vessels.

This standard applies to S-type marine pipelaying polyurethane tensioner blocks. Tensioner pad blocks of J type marine pipe laying vessels and marine cable laying ships can be referenced for execution.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 528 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber

GB/T 529 Determination of tear strength of rubber or thermoplastic rubber (pants, right angles and crescents)

Rubber and rubber -- Determination of hardness of indented rubber - Part 1: Shore hardness test method (Shore hardness)

GB/T 1681 Determination of the resilience of vulcanized rubber

GB/T 1689 vulcanized rubber - Determination of wear resistance (with Acron wear testing machine)

GB/T 1804-2000 General tolerances and tolerances for linear and angular dimensions without tolerances

GB/T 3512 vulcanized rubber or thermoplastic rubber hot air accelerated aging and heat test

GB/T 3672.1-2002 Tolerance of rubber products - Part 1: Dimensional tolerances

GB/T 5721 General provisions for marking, packaging, transportation and storage of rubber sealing products

Rubber and rubber -- Determination of compression set - Part 1: normal temperature and temperature conditions

GB/T 15254 vulcanized rubber and metal bonding 180° peel test

HG/T 2729-2012 Determination of friction coefficient of vulcanized rubber and flakes

HG/T 4077-2009 Anti-corrosion coating coating technical specification

3 Classification and structure

3.1 Classification

According to the use, it can be divided into two categories, as shown in Table 1.

Table 1 Classification and code (type, code, typical use):

Wear-resistant, S-I: cement coated pipe, umbilical cable, etc.

Non-slip, S-II: uncoated tube, PP/PE coated tube, etc.

3.2 Schematic diagram

The spacer is composed of a metal base plate and a polyurethane layer, and the structure is schematically shown in FIG. 1 and FIG. 2.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

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