MSS SP-157-2024 阀门、配件及相关钢制管道部件磷酸盐表面保护涂层的质量标准

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MSS SPxxx-202x

Standard Practice developed and approved by

the Manufacturers Standardization Society of

the Valve and Fittings Industry, Inc.

The Technical Voice of the Industry ®

441 North Lee Street

Alexandria, Virginia 22314

www.msshq.org

Manufacturers

Standardization Society

OF THE VALVE AND FITTINGS INDUSTRY

PROVIDING INDUSTRY STANDARDS SINCE 1924

MSS SP-157

2024 Edition

Quality Standard for Phosphate

Surface Protective Coatings for

Valves, Fittings, and Related

Steel Piping Components

MSS SP-157-2024

This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 304, Quality

Standards, and the MSS Coordinating Committee. The content of this Standard Practice is the resulting efforts of

knowledgeable and experienced industry volunteers to provide an effective, clear, and non-exclusive standard that will

benefit the industry as a whole. This MSS Standard Practice describes minimal requirements and is intended as a basis

for common practice by the manufacturer, the user, and the industry at large. It is the responsibility of the user of this

Standard Practice to establish appropriate safety and health practices and determine the applicability of regulatory

requirements prior to use. The existence of an MSS Standard Practice does not in itself preclude the manufacture, sale,

or use of products not conforming to the Standard Practice. Mandatory conformance to this Standard Practice is

established only by reference in other documents such as a code, specification, sales contract, or public law, as

applicable. MSS has no power, nor does it undertake, to enforce or certify compliance with this document. Any

certification or other statement of compliance with the requirements of this Standard Practice shall not be attributable

to MSS and is solely the responsibility of the certifier or maker of the statement.

“Unless indicated otherwise within this MSS Standard Practice, other standards documents referenced to herein

are identified by the date of issue that was applicable to this Standard Practice at the date of approval of this MSS

Standard Practice (see Annex A). This Standard Practice shall remain silent on the validity of those other

standards of prior or subsequent dates of issue even though applicable provisions may not have changed.”

By publication of this Standard Practice, no position is taken with respect to the validity of any potential claim(s) or of any

patent rights in connection therewith. MSS shall not be held responsible for identifying any patent rights. Users are expressly

advised that determination of patent rights and the risk of infringement of such rights are entirely their responsibility.

For all MSS Standard Practices, the term “shall” means “must” and “shall not” means “must not”.

In this Standard Practice, all text, notes, annexes, tables, figures, and references are construed to be “normative” and essential

to understand the standard’s message. All appendices and footnotes, or any other information denoted as “supplemental”,

that may be included within this Standard Practice, DO NOT involve mandatory or normative requirements.

The U.S. customary units and SI (metric) units in this Standard Practice are regarded separately as the standard; each

should be used independently of the other and may not be technically equivalent. Combining or converting values

between the two systems may result in non-conformance with this Standard Practice.

Substantive changes in this 2024 edition are “flagged” by parallel bars as shown on the margins of this

paragraph. The specific detail of the change may be determined by comparing the material flagged with

that in the previous edition.

Excerpts of this Standard Practice may be quoted with written permission. Credit lines should read ‘Extracted from MSS SP-

157-2024 with permission of the publisher, Manufacturers Standardization Society of the Valve and Fittings Industry’.

Reproduction and/or electronic transmission or dissemination is prohibited under copyright convention unless written

Originally Approved: April 2020

Originally Published: May 2020

Current Edition Approved: September 2024

Current Edition Published: December 2024

MSS is a registered trademark of the Manufacturers Standardization Society of the Valve and Fittings Industry, Inc.

MSS SP-157-2024

Foreword

The 2020 edition of the Standard Practice was developed by a cooperative effort of manufacturing

representatives, including those that provide phosphate surface protective coating for valves and fittings. It is

based on current best practice and industry experience at this time.

This 2024 edition includes changes to the Definitions and Process Verification Testing sections and Annex A has

had an update to the referenced standards.

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标签： #阀门 #钢 #配件

摘要：

MSS SP-157-2024 是一项针对阀门、配件及相关钢制管道部件磷酸盐表面保护涂层的国际质量标准，由美国阀门及配件工业制造商标准化协会（MSS）发布。该标准详细规定了磷酸盐涂层的技术要求、涂覆工艺、性能测试方法及验收准则，旨在确保钢制管道部件在储存、运输及使用过程中具备良好的防锈蚀、耐磨及附着力性能。本标准适用于碳钢、低合金钢等材质的阀门、法兰、管接头及其他钢制管道配件的表面处理，强调涂层均匀性、厚度控制、耐盐雾试验以及后处理（如封闭或浸油）等关键工艺指标。通过遵循该标准，制造商能够提升产

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MSS SP-157-2024 阀门、配件及相关钢制管道部件磷酸盐表面保护涂层的质量标准

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