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TIANJIN YUANTAI DERUN STEEL PIPE MANUFACTURING GROUP CO., LTD.

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ISO9001

Certificate No : 911200005503823816

Issuing authority : BEIJING ECI CERTIFICATION COMPANY LTD.

Valid period : 2020/10/30 - 2023/10/29

ISO9001

The ISO9001 quality management system certification standard is a summary of the development of management theory and management practice in many countries, especially developed countries, over the years. It embodies a management philosophy and quality management method and mode, and has been adopted by more than 100 countries and regions in the world.

The ISO9001 international quality management system standard is the most mature set of management systems and standards in the world so far, and is the root of enterprise development and growth.

The enterprise organization's passing the ISO9000 quality management system certification has the following significance:
1. It can improve the internal management of the organization, institutionalize, systematize and legalize quality management, improve product quality and ensure the stability of product quality;
2. Show respect for the rights and interests of consumers and responsibility to the society, enhance the trust of consumers, make consumers feel at ease, so that they can use their products with confidence, improve the market competitiveness of products, and take this opportunity to establish the image of the organization, improve the popularity of the organization, and form a famous brand enterprise;
3. ISO9000 quality management system certification is conducive to the development of export-oriented economy and the expansion of market share. It is the entrance ticket for government procurement and other bidding projects, the entrance permit for the organization to march into overseas markets, and the powerful weapon to eliminate trade barriers;
4. Through the establishment of ISO9000 quality management system, we can draw inferences from one instance to establish and improve other management systems;
5. Passing ISO9000 certification can be cited, which is not comparable to general advertising investment, planning investment, management investment or training, and has comprehensive benefits; They can also enjoy the preferential policies of the state and the key support to the licensed units.
The implementation of ISO9000 standards is closely related to the reform of modern enterprises in China. The difference is that the former deals with the micro environment of the organization, while the latter focuses on the macro environment of the organization. It can be seen that the ISO9000 family of standards is very suitable for China's national conditions. Therefore, the state explicitly stipulates that the ISO9000 family of standards will be fully implemented during the Ninth Five Year Plan period.
ISO9000 family standard certification can also be understood as quality management system registration, that is, a fair third-party institution approved by the state, the certification institution, evaluates the organization's quality management system according to ISO9000 family standards, proves to the public that the organization's quality management system conforms to ISO9000 family standards and provides qualified products. The public can trust the consistency of the organization's service commitment and the organization's product quality.
The ISO9000 family of standards is not only implemented in all developed countries, but also gradually joined by developing countries. ISO has become a veritable technical world alliance. The reason for this situation is that in addition to the huge practical benefits it can bring to the organization, the more profound reason is that the ISO9000 family of standards is an inevitable thing in the development of human civilization.
China's top 500 manufacturing enterprises

Certificate No : CMES2017228

Issuing authority : China Manufacturing Enterprises Association

Valid period : 2017/4/1 - 2018/3/31

China's top 500 manufacturing enterprises

The top 500 Chinese enterprises is a list of Chinese enterprises selected and released by the China Enterprise Federation and the China Entrepreneurs Association in accordance with international practice. Since 2002, the annual ranking of China's top 500 enterprises has been released to the public once a year.

On September 7, 2022, Tianjin yuantaiderun steel pipe manufacturing group was once again selected as one of the top 500 Chinese manufacturers, ranking 383.

Honor is the affirmation of the past and the driving force of the future. We thank all our customers and friends for their support. Being listed in the top 500 Chinese manufacturing enterprises this time is not only a recognition of the strength of Tianjin yuantaiderun group, but also an incentive to the group. In the future, we will be a comprehensive service provider of structural steel pipes with stronger strength, greater contribution, higher position and thicker foundation!

Up to now, Yuantai Derun Steel Pipe Manufacturing Group has been awarded the 500 Compulsory Manufacturing Industry in China for 8 consecutive years.
Top 500 private enterprises in China

Issuing authority : All China Federation of industry and Commerce

Valid period : 2015/8/1 - 2021/10/20

The "top 500 private enterprises" is the ranking result released by the all China Federation of industry and Commerce Based on the survey of large-scale private enterprises, with the total operating income as the reference index. The list and report have been published for more than ten consecutive years, and are compared to the "barometer of the private economy".

On the same day, the research and analysis report of China's top 500 private enterprises was also released. The time range of the research data is from January 1 to December 31, 2021. The report shows that the threshold of the top 500 private enterprises is 26.367 billion yuan, an increase of 2.866 billion yuan over the previous year; The operating income of 19 Fortune 500 enterprises exceeded 300 billion yuan; There were 88 enterprises with total assets of more than 100 billion yuan. A total of 28 top 500 private enterprises were shortlisted in the world's top 500.
It is reported that this year is the 24th consecutive survey of large-scale private enterprises organized and carried out by the all China Federation of industry and commerce. A total of 8602 enterprises with an annual operating income of more than 500 million yuan participated.
EN10210

Certificate No : 2814/CPR/0038/CPR/SHA/BJG6023851/B

Issuing authority : Lloyd's Register Verification B.V.

Valid period : 2021/8/23 - 2024/8/22

EN10210

British Standard BS EN 10210-1-2006 hot formed structural pipe (hollow core) of non alloy and fine grain structural steel
It may be a welded pipe or a seamless pipe. See where your customers use it and what their requirements are.

EN 10210-1:2006
Hot finished structural hollow sections of non-alloy and fine grain steels - Part 1: Technical delivery conditions

CPR Regulation (EU) No 305/2011

This part of this European Standard specifies technical delivery conditions for hot finished hollow sections of circular, square, rectangular or elliptical forms and applies to hollow sections formed hot, with or without subsequent heat treatment, or formed cold with subsequent heat treatment to obtain equivalent metallurgical conditions to those obtained in the hot formed product. Requirements for tolerances, dimensions and sectional properties are contained in EN 10210-2. NOTE A range of material grades is specified in this standard and the user should select the grade appropriate to the intended use and service conditions. The grades and mechanical properties of the finished hollow sections are compatible with those in EN 10025-2 and EN 10025-3.
EN10219

Certificate No : 2814/CPR/0038/CPR/SHA/BJG6023851/A

Issuing authority : Lloyd's Register Verification B.V.

Valid period : 2021/8/23 - 2024/8/22

EN10219

New European Standard EN10219 for Cold formed Welded Hollow Steel Sections

According to the CEN/CENELEC internal specification, the national standards bodies of the following countries shall implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.

DIN EN 10219-2 cold formed welded hollow sections of non alloy and fine grain steels Part 2: tolerances, dimensions and static values
EU standards adopted by Germany.

EN 10219-1:2006 Cold formed welded structural hollow sections of non-alloy and fine grain steels-Part 1: Technical delivery conditions

EN 10219-1 standard specifies the technical requirements for cold bending welding of round, square and rectangular pipes, and is applicable to cold formed or hollow sections without heat treatment. It specifies non alloy high-quality steel, fine grain non alloy high-quality steel and fine grain alloy special steel.
BC1

Certificate No : BJG6023851/A

Issuing authority : Lloyd's Register Verification

Valid period : 2019/11/14 - 2022/11/13

BC1

This certificate proves that we can produce and supply steel pipe products that meet Singapore building standards. It is also because of this certificate that we got the project of Google building in Singapore.

It includes round, square or rectangular hot formed and cold formed structural hollow sections, as well as oval hollow sections with hot surface processing. UK / EU product standards: BS 5950-1, BS 5950-2, BS 7668, BS EN 1993-1-1, BS EN 1993-1-10, BS EN 10210-1, BS EN 10210-2, BS EN 10219-1 and BS EN 10219-2

BC1:2012 Design Guide on Use of Alternative Structural Steel to BS5950
Overview of Singapore FPC Certification
1. Competent authority:
SSSS Singapore Structural Steel Society
BCA Academy BCA The education and research arm of the Building and
Construction Authority
2. FPC namely FactorvProduction Control The manufacturer shall establish, record and maintain factory production control (FPC) according to the requirements of BC1:2012 Section 3.1
System to ensure that the final product meets the nominal specification.
3. Standards: BC1.2012 manufacturer shall obtain FPC production control certificate issued by independent third-party certification authority recognized or authorized by BCA. The authentication method is:; Quality assurance system audit
+Continuous supervision and annual review
BV Certification by French Bureau of Shipping

Issuing authority : BV Shanghai

Valid period : 2017/11/16 - 2021/10/25

BV Certification by French Bureau of Shipping

BV certificate is bv test certificate (or Bureau Veritas test certificate). Bureau Veritas, commonly referred to as BV, also known as Bureau Veritas and Bureau Veritas, was founded in 1828 and is one of the largest inspection companies and classification societies in the world.
This certificate shows that our steel pipe products from tedrun steel pipe group fully meet the inspection standards of the French Bureau of shipping.

What does BV certification mean? BV certification refers to the international organization specialized in quality and environmental system certification and certification of other industrial standards under the French International Inspection Bureau Bureau Veritas. BV certification is also known as BVQI. BVQI is an authoritative certification organization with the largest number of certification companies and outstanding reputation. It participated in the designation of ISO9000 standards and a series of industrial standards, making great contributions to the development and promotion of standards.
ISO140001

Issuing authority : SDCB

Valid period : 2019/3/15 - 2022/3/14

IS0140001

The significance of establishing ISO14001 environmental management system certification for enterprises:
1. Improve employees' environmental awareness, initiative and consciousness of abiding by the law;
2. ISO14000 series standards provide a set of systematic framework to help enterprises improve their environmental management capabilities. With the help of this set of standards, enterprises can establish a management system that meets the requirements;
3. It can prove to the outside that it follows the stated environmental policy and improves its commitment to environmental behavior, establishes a good image of the enterprise, and improves the reputation and degree of the enterprise;
4. It is conducive to meeting the needs of the market, users and interested parties, attracting investment, product sales and market development;
5. Adapt to the trend of green consumption and improve the competitive advantage of enterprises;
6. It is conducive to promoting technological transformation of enterprises, improving process technology and developing new products;
7. Enhance the understanding between the enterprise and surrounding residents, communities and relevant parties, and improve mutual relations;
8. It is conducive to the growth of economic benefits of the enterprise and the improvement of environmental protection awareness of all employees.
9. Promote the improvement of the organization, establish a self-discipline mechanism, formulate and implement management measures focusing on prevention, starting from the source and controlling the whole process. It has improved a set of scientific management tools that are complementary to legal governance to solve environmental problems, and opened up new ideas for human society to solve environmental problems;
JIS certificate

Issuing authority : KSA

Valid period : 2021/10/13 - 2024/10/12

JIS MARK Certfication

1. Passing the JIS certification can make customers believe that the product quality of the company meets the requirements of the Japanese JIS certification standard.
2. You can post the logo of JIS certification on the company's products and product packages.
3. We can declare to the world that the quality of our products has reached the international leading level.
4. Meet customer requirements,
5. Improve the company's management level, especially learn from Japan's product quality management.

JIS
Japanese Industrial Standard
Japanese Industrial Standards (JIS) are the most important and authoritative national standards in Japan. Prepared by the Japanese Industrial Standards Survey (JISC).
The classification is divided into 19 items, including civil construction, general machinery, electronic instruments and electrical machinery, automobiles, railways, ships, steel, non-ferrous metals, chemicals, fibers, mines, pulp and paper, management systems, ceramics, daily necessities, medical safety appliances, aviation, information technology and others.
ISO45001

Issuing authority : BEIJING ECI

Valid period : 2020/12/29 - 2024/12/28

ISO45001 OF YUANTAI DERUN STEEL PIPE MANUFACTURING GROUP

In order to ensure the health and safety of its workers, Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. passed the ISO45001 certification 10 years ago.

TIANJIN YUANTAI DERUN PIPE
MANUFACTURING GROUP CO.,LTD
NO:ECI21S10064R0M
Organization Code:911200005503823816
Register Address: DAQIUZHUANG INDUSTRIAL ZONE JINGHAI TIANJIN
CHINA . Post Code:301606
Production Address: DAQIUZHUANG INDUSTRIAL ZONE JINGHAI TIANJIN
CHINA . Post Code:301606

Is in conformity with
GB/T45001-2020/ISO45001:2018 Standard
Authentication Scope
SALES AND SERVICE OF HOLLOW SECTION, HOT DIP
GALVANIZED HOLLOW SECTION, METAL MATERIAL
AND
RELEVANT LABOUR HEALTH AND SAFETY
MANAGEMENT
ACTIVITIES (Exceptions to the scope of legal enforcement)
Date of issue: 11-05-2021 Date of valid: 10-05-2024

This certificate is valid only if it is used in conjunction with registration valid notice certificate validity is subject the above QR code, and it could

be confirmed via official website of CNCA(www.cnca.gov.cn)
3A-integrity-unit

Issuing authority : Integrity Working Committee of China Marketing Soc

Valid period : 2017/4/1 - 2026/3/31

2017-3A-integrity-unit

What is 3A enterprise integrity certification? Enterprise integrity 3A certification, also known as AAA certification, is a "credit rating" and a very important certification in enterprise credit. The specific grades are: AAA, AA, a, BBB, BB, B, CCC, CCC. 3a is the highest level certification, which reflects the financial status and development potential of enterprises and is an important basis for enterprise credit evaluation# 3A enterprise certification#

This certificate shows that the business integrity of yuantaiderun steel pipe manufacturing group is very good, and it is the highest 3A honest business enterprise

In fact, Yuantai Derun Steel Pipe Manufacturing Group is also an excellent enterprise representative of China Credit and a national champion. Taxpaying A-class enterprise, the brand leader of square tube in China. China's top 500 manufacturing enterprises and China's top 500 private enterprises. Steel pipe products have participated in many world-renowned large-scale engineering projects.
SCS certificate

Issuing authority : China Steel Structure Association

Valid period : 2016/11/13 - 2019/11/13

SCS certificate

This certificate indicates that the steel pipe products of yuantaiderun steel pipe manufacturing group are recognized by China's domestic cold bending Association.

Steel structure qualification is the qualification certificate of steel structure manufacturing enterprises and the necessary condition for professional contracting of steel structure engineering. The qualification is divided into level I, level II and level III.

SGS
Special Qualification Certificate of China Steel Structure Manufacturing Cold formed Steel Production
(Level II)
RF201611004
Company name: Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd
Business scope: key cold-formed steel products in corresponding industries
Registered address: Dalinzhuang Industrial Zone, Tianjin
Design, manufacture and sales, can undertake relevant cold
Processing of curved steel products with supplied materials and standardization of finalization
Qualification No.: China Steel Structure (External) RF-B-024
Product production
Approval date: November 2016
Validity: 2016.11-2019.11
Issued by:
November 2016
DNV Classification Society Certification

Certificate No : AMMM00002ZZ

Issuing authority : Dalian NB & CMC

Valid period : 2022/9/29 - 2025/9/28

At the beginning of 2023, the structural hollow section steel pipe products produced by Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. passed the stringent DNV certification of Det Norske Veritas.

APPROVAL OF MANUFACTURER CERTIFICATE
Certificate No: AMMM00002ZZ
This is to certify:
That
TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD.
Industrial Area, Daqiuzhuang Town, Tianjin City,
China
is an approved manufacturer of
Steel hollow sections
in accordance with
DNV rules for classification – Ships
and the following particulars:
Application area High strength steel
Products Structural hollow sections,
See page 2
Manufacturing method Seamless / Welded
Max. dimensions See page 2
Max. wall thickness See page 2
Heat treatment condition See page 2
Manufacturer(s) approved by this certificate is/are accepted to deliver according to DNV GL, DNV and GL rules.
Materials to be applied to DNV classed object shall fulfill the material requirements in the applicable DNV class rules.
Issued at Hamburg on 2022-09-29
This Certificate is valid until 2025-09-28.
DNV local station: Dalian NB & CMC
Approval Engineer: Andreas Koch
for DNV
Thorsten Lohmann
Head of Section
LEGAL DISCLAIMER: Unless otherwise stated in the applicable contract with the holder of this document, or following from mandatory law, the liability of DNV AS, its

Job Id: 263.11-011697-1
Certificate No: AMMM00002ZZ
Form code: AM 311 Revision: 2021-03 www.dnv.com Page 2 of 2
Particulars of the approval
Round hollow sections
Grade Product
Manufacturing
method1)
Max. outer
diameter [mm]
Max. wall
thickness [mm]
Heat treatment
condition2)
NV A32, NV A36
NV D32, NV D36
Round SAW 915 30 AR
Rectangular / square hollow sections
Grade Product
Manufacturing
method1)
Max. outer
diameter [mm]
Max. wall
thickness [mm]
Heat treatment
condition2)
NV A32, NV A36
NV D32, NV D36
Rectangular
Square
CFS, CFW
900*600
900*900
30 AR
NV A32, NV A36
NV D32, NV D36
Rectangular
Square
ERW
900*600
900*900
16 AR
Remarks:
1) CFS: Cold formed seamless
CFW: Cold formed welded
ERW: electric resistance welded
2) AR: as rolled
ABS Certificate

Certificate No : PML-T2316300

Issuing authority : ABS Shanghai

Valid period : 2023/1/2 - 2028/1/1

ABS Certificate

1.American Bureau of Shipping ABS certification

ABS certification is applicable to various products in the marine and offshore applications, industrial equipment and processes, and information technology industries. Verify by ABS engineers whether the product meets the manufacturer's specifications, applicable ABS rules, and national or international standards.

2.American Bureau of Shipping (ABS, full name: American Bureau of Shipping), founded in 1862, is a non-governmental organization, mainly committed to serving the public interest and customer needs, and protecting the safety of life, property and the natural environment by developing and verifying the design, construction and operation standards of marine related facilities. The outstanding feature of American Bureau of Shipping (ABS) is that it has carried out the inspection business of small and medium-sized combat ships and military auxiliary ships of the United States Navy.

3.American Bureau of Shipping ABS certification scope:

Structural Piping components for marine applications

4.Authentication Type
manufacturer
5.ISSUE DATE: 02 January 2023
6.EXPIRY DATE: 01 January 2028
7.The steel products of Tianjin Yuantai Derun Steel Pipe Manufacturing Group meet the certification standards of ABS Classification Society in the United States, proving that we can provide high-quality product supply to global ship steel pipe users.
CNAS Certification by inspection agency

Certificate No : CNAS L18358

Issuing authority : CNCA,APAC,ILAC

Valid period : 2023/5/18 - 2029/5/17

CNAS CERTIFICATE

In May 2023, the subsidiary of Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd: Tianjin Boshi Testing Co., Ltd passed the CNAS certification. Yuantai Delun Group steel pipe products can be factory equipped with nationally recognized authoritative third-party inspection reports

What is CNAS Laboratory Accreditation?

CNAS laboratory accreditation is the China National Accreditation Service for Conformity Assessment.

China National Accreditation Service for Conformity Assessment (abbreviated as: CNAS), is a national accreditation body approved and authorized by the State Certification and Accreditation Administration of the People's Republic of China under the provisions of the "Regulations of the People's Republic of China on Certification and Accreditation", which is unified and responsible for the accreditation of certification bodies, laboratories and inspection bodies and other related institutions.

CNAS is formed by the merger of the former China National Accreditation Board for Certification Bodies (CNAB) and the former China National Accreditation Board for Laboratories (CNAL), which evaluates and supervises the management and activities of conformity assessment bodies (such as certification bodies, laboratories and inspection bodies) to confirm their ability to carry out the corresponding conformity assessment activities (such as certification, testing and calibration, inspection, etc.) and to confirm their conformity assessment activities, CNAS plays a binding role in accreditation by evaluating and supervising the management and activities of conformity assessment bodies (such as certification bodies, laboratories, inspection bodies) and confirming the authority of their conformity assessment activities.
National Square Rectangular Steel Pipe Manufacturing Single Champion Certificate

Issuing authority : Ministry of Industry and Information Technology

Valid period : 2022/11/7 - 2025/11/7

National Square Rectangular Steel Pipe Manufacturing Single Champion Certificate

On July 4, 2023, the Tianjin Municipal Bureau of Industry and Information Technology recently held a certification event for the seventh batch of national manufacturing single champion enterprises and the unveiling ceremony of the Municipal Federation of Industry and Economics, awarding certificates to 12 selected enterprises.

Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. (referred to as Yuantai Derun) was successfully selected as the "seventh batch of national single champion demonstration enterprises in the manufacturing industry" due to its outstanding contributions in the square tube field. As an important component of the industrial chain in Tianjin, Yuantai Derun has demonstrated its strength and position as a backbone enterprise based on more than 20 years of experience in focusing and deeply cultivating square tube business. Along with other selected enterprises, Yuantai Derun has become a shining business card for manufacturing enterprises in Tianjin.
API Spec. 5L Certificate

Issuing authority : American Petroleum Institute

Valid period : 2023/7/17 - 2026/7/17

JCOE steel pipe production line of Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. mainly focuses on the production of structural steel pipes. After sufficient preparation, the Group was audited by API in mid-May 2023 and recently obtained the certificate of API Spec. 5L.

API is the abbreviation of American Petroleum Institute, 5 refers to the 5th committee, L refers to line pipe. So API Spec. 5L is the standard for line pipe referred to by the American Petroleum Institute Committee 5.

Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. manufactures various kinds of high frequency welded pipes, square and rectangular pipes, hot galvanised pipes, line pipes and other welded pipes with domestic and imported high-quality steel raw materials. The products can be produced according to the national standard GB, American standard ANSI, ASME, API, European standard EN and other standards, can also be customised according to customer requirements of non-standard or special purpose products. The products are widely used in petroleum, chemical, shipbuilding, construction, machinery and other industries.
Tangshan ISO9001

Certificate No : 23524QZ0057ROM

Issuing authority : 杭州中奥质量认证有限公司

Institution URL : https://www.cx.cnca. cn

Valid period : 2024/3/29 - 2027/3/29

Compliant with management system standards
GB/T 19001-2016/ISO 9001:2015
Certification scope: Steel rolling processing; Manufacturing and sales of cold-rolled steel strips, high-frequency welded pipes, and hot-dip galvanized pipes; Sales of hot-rolled strip steel (excluding mandatory regulatory requirements)
Certificate Number: 23524QZ0057ROM
First certification date: March 29, 2024
Unified Social Credit Code: 91130223347923971T
This certificate was issued on March 29, 2024
Registration expiration: March 28, 2027
Tangshan ISO14001

Certificate No : 23524EZ0050ROM

Issuing authority : 杭州中奥质量认证有限公司

Institution URL : https://www.cx.cnca. cn

Valid period : 2024/3/29 - 2027/3/28

Certification scope: Steel rolling processing; Manufacturing and sales of cold-rolled steel strips, high-frequency welded pipes, and hot-dip galvanized pipes; The environmental management activities involved in the sales of hot-rolled strip steel (excluding mandatory regulatory requirements)
Certificate Number: 23524EZ0050R0M
First certification date: March 29, 2024
Unified Social Credit Code: 91130223347923971T
This certificate was issued on March 29, 2024
Registration expiration: March 28, 2027
Tangshan ISO45001

Issuing authority : 杭州中奥质量认证有限公司

Institution URL : https://www.cx.cnca.cn

Valid period : 2024/3/29 - 2027/3/28

Certification scope: Steel rolling processing; Manufacturing and sales of cold-rolled steel strips, high-frequency welded pipes, and hot-dip galvanized pipes; The occupational health and safety management activities involved in the sales of hot-rolled strip steel (excluding mandatory regulatory requirements):
Book number: 23524SZ0045R0N
First certification date: March 29, 2024
Unified Social Credit Code: 91130223347923971T
This certificate was issued on March 29, 2021
Registration expiration: March 28, 2027