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GB/T 46051-2025Choke and kill hose and hose assemblies (English PDF)

节流压井软管及软管组合件

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 29, 2025

Implementation date

March 1, 2026

Scope

GB/T 46051-2025 is the English-translated version of 节流压井软管及软管组合件.

GB/T 46051-2025 is the Chinese national standard covering the flexible line between the BOP stack and the choke manifold — the working and test pressures, the fire resistance and the temperature range, the end connections and their retention, the sour service requirements, the traceability of each assembly, and the tests before it goes on a well.

A choke and kill line is part of the well control system: it holds pressure at the moment nothing else is holding it. First edition, under the China Petroleum and Chemical Industry Federation.

In force from 1 March 2026. Issued on 29 August 2025, it has been in force since 1 March 2026.

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Document preview — GB/T 46051-2025

National Standard of the People's Republic of China

ICS: 83.140.40
Classification: G 42

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

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 Structure and classification
4.1 Hose

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the China Petroleum and Chemical Industry Federation.

This document is under the jurisdiction of the National Technical Committee on Rubber and Rubber Products of Standardization (SAC/TC35).

This document was drafted by: Shandong Longkou Special Hose Co., Ltd., Yantai Taiyue Fluid Technology Co., Ltd., Shenyang Rubber Research and Design Institute Co., Ltd., Qingdao Rubber Hose Co., Ltd., Luohe Litong Hydraulic Technology Co., Ltd., Hebei Jingbo Petroleum Machinery Co., Ltd., Qingdao Green Rubber Co., Ltd., Dezhou United Petroleum Technology Co., Ltd., Zhongliao Testing (Liaoning) Co., Ltd., Dongjin Group Co., Ltd.

Co., Ltd., Hebei Siberia Special Rubber Co., Ltd., Shengli Oilfield Changlong Rubber and Plastic Co., Ltd., and Hebei Jiuxing Rubber and Plastic Products Co., Ltd.

The main drafters of this document are: Zhang Guodong, Li Xiangjie, Wang Shoufeng, Wang Yongfu, Wu Peiyuan, Wang Shuyi, Zhou Fan, Yang Chengyong, Sun Li, Li Yanfeng, Liu Zhouxin, Wang Yan, Zhang Yigui, Wu Binglan, Guo Xu, Chen Cheng, and Wang Fei.

Choke and kill hoses and hose assemblies

1 Scope

This document specifies the structure and classification, requirements, inspection rules, It also describes the requirements for marking, packaging, transportation, storage, etc. and the test methods for related performance.

This document is applicable to hoses and hose assemblies in choke and well-killing systems, conveying media such as mud and well-killing fluid, with an inner diameter of 51mm~ 102mm, the maximum working pressures are 34.5MPa, 69.0MPa, 103.5MPa, 138.0MPa respectively, and the working temperature is between -29°C~ 121°C hoses and hose assemblies.

2 Normative references

GB/T 7528

GB/T 9573

GB/T 9576

GB/T 9577

GB/T 22513-2023

ISO 15156

3 Terms and Definitions

The terms and definitions defined in GB/T 7528 apply to this document.

4 Structure and classification

4.1 Hose

4.1.1 The hose consists of an inner lining layer, a reinforcement layer, and an outer covering layer (fire retardant layer). An armor layer may be provided upon request.

4.1.2 The inner lining is made of rubber or other polymer materials.

4.1.3 The reinforcement layer is composed of multiple strands of steel wire, steel rope and other materials.

4.1.4 The outer covering is composed of rubber or other polymer materials. The outer covering of hose assemblies with fire resistance requirements is required to have fire resistance properties.

......
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

ISO 15156

Editions of GB/T 46051

Edition	Title	Revision	Status
GB/T 46051-2025	Choke and kill hose and hose assemblies	current edition	Current

This page sells the current edition, GB/T 46051-2025. Earlier editions are listed for reference only.

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