ISO 9001:2015 Certified Seamless Steel Pipe Manufacturer

Key facts

Certificate holder · Zhejiang Xintongda Special Steel Manufacturing Co., Ltd. (浙江鑫通达特钢制造有限公司), unified social credit code 91331124MA2A13FU4J. The certificate names this company and three of its sites in Songyang County, Lishui, Zhejiang, China.

Global export marketing and supply · Wenzhou Xinzhe Tech Co., Ltd. (温州信哲科技有限公司). Contact Wenzhou Xinzhe for export enquiries, quotations and order coordination.

Certificate: 20225Q20340R1M, issued 11 July 2025 by Zhejiang Quanpin Certification Co., Ltd., valid to 10 April 2028.

Scope: manufacture and sale of seamless steel pipe within the scope of qualification — a management-system scope, not a list of grades, sizes or standards.

Audited sites: office and production at No. 209 Ruiyang Avenue; finished product inspection and warehousing at the north end of No. 208 Ruiyang Avenue; pipe blank processing at 1st Floor, Building 1, No. 217 Yongning Road.

What ISO 9001:2015 certifies

ISO 9001 is a quality management system standard. It does not prescribe a product specification; it sets out requirements for how a manufacturer defines responsibilities, controls its processes, manages documentation and records, and evaluates whether those processes consistently meet customer and applicable regulatory requirements.

For a pipe mill, a certified system means there are documented and auditable controls behind the steps that decide whether a lot ships:

• Order review and contract handling. Specification, grade, size, test and documentation requirements are checked before production is released, so that an enquiry is not converted into a heat that cannot be certified.
• Control of production and inspection processes. Melting, piercing, cold drawing or rolling, heat treatment and finishing are carried out under defined parameters, with inspection points recorded rather than remembered.
• Calibration and control of measuring equipment. Micrometers, ultrasonic and eddy-current units, hardness testers and pressure gauges are calibrated on a schedule, which is what makes a dimensional or test record defensible later.
• Supplier evaluation and incoming material control. Billet, tube hollow and consumable suppliers are evaluated, and incoming material is verified against the order before it enters the line.
• Nonconformity handling, corrective action and internal audit. A reject is logged, dispositioned and traced back to a cause; the system is checked from the inside at planned intervals, not only when a customer complains.
• Traceability and record retention. Heat number, process route and test results stay linked to the delivered lot, which is what a third-party inspector or an end user’s quality department will ask for.

For procurement teams, the certificate is evidence of supplier qualification within the stated scope. It supports the supplier-approval stage of a project and reduces the need to assess management-system capability from scratch before a first order.

Two features of this certificate matter more than the mark itself. The scope wording — “manufacture and sale of seamless steel pipe within the scope of qualification” — covers pipe making and names no grade, dimension or product standard. And certification is tied to audited addresses: a certificate held at one site does not automatically extend to another site, a bought-in product or a process that was not audited.

What the certificate does not replace

ISO 9001 certification is not a statement of product conformity. It does not certify a steel grade, a dimension, a tolerance, a surface condition, a corrosion test or a mechanical result. Those attributes are governed by the order documents: the purchase specification, the material standard called out on the order — ASTM A312, ASTM A213, ASTM A789/A790, EN 10216-5 or a GB grade requirement, for example — and the inspection records issued with each lot.

Read the two layers together. The certificate qualifies the supplier; the lot documentation proves the material. A project that needs both should keep the certificate in the supplier-approval file and the mill certificates with the delivered pipe — and should not accept one as a substitute for the other.

Not a product approval. Where a specification calls for a class society approval, a pressure equipment directive route or a national market certificate, ISO 9001 does not cover it. Those documents sit on separate pages of this site and are granted, and expire, on their own terms.

Audited sites

All three sites are in Xiping Street, Songyang County, Lishui City, Zhejiang Province, China. Each address is listed on the certificate for one defined activity, which is worth reading carefully when a purchase order names a shipping point.

The registered address is No. 209, Ruiyang Avenue — the same site recorded for office and production. If your supplier-approval file records a manufacturer address, check it against the activity performed at that address rather than against the registered address alone; the three entries are close together but they are not interchangeable.

Certification body and renewal

The certificate is issued by Zhejiang Quanpin Certification Co., Ltd., Hangzhou, a management system certification body operating under CNAS accreditation with the code CNAS C197-M and the IAF multilateral recognition arrangement mark. Both marks are printed at the foot of the certificate, together with a QR code that resolves to the body’s online certificate check.

Certification body

Zhejiang Quanpin Certification Co., Ltd., Room 603, Floor 6, Building 1, No. 88, Puyan Road, Puyan Street, Binjiang District, Hangzhou, Zhejiang 310053, China

Accreditation marks on the certificate

IAF multilateral recognition arrangement; CNAS C197-M management system certification

Surveillance

The certificate requires an audit of validity at least once a year

Body website

www.qpc.org.cn

Renewal timing, stated plainly. The certificate shows an initial date of 11 April 2022, a previous validity ending 10 April 2025, a recertification audit on 30 March – 1 April 2025, and an issue date of 11 July 2025 for the current cycle. If your supplier qualification requires unbroken coverage across that window, ask the certification body for the surveillance and recertification record instead of assuming continuity from the dates alone. “First certified in 2022, recertified in 2025” is what the document supports.

The certificate also carries the Chinese national adoption of the standard, GB/T 19001-2016, alongside ISO 9001:2015. The two are technically equivalent; a buyer citing either will be answered by the same certificate.

How to verify the certificate

The certificate can be checked independently rather than taken at face value:

1. Scan the QR code printed at the lower left of the certificate. It resolves to the certification body’s certificate query page.
2. Query the certification body. Contact Zhejiang Quanpin Certification Co., Ltd. and quote certificate number 20225Q20340R1M or the organisation name.
3. Use the CNCA public platform. China’s certification and accreditation administration publishes a national query service at www.cnca.gov.cn; search by certificate number or organisation name.
4. Compare the details — certificate number, scope wording, audited addresses and expiry date — against the PDF issued by the body, not against a screenshot or a forwarded copy.

A current certificate should show an expiry date in the future, a scope wording that matches the products you are actually buying, and audited addresses that match the site that will make or ship the order. If any of the three does not match, raise it with the supplier before the order is placed.

The other factory approvals, and what each one answers

ISO 9001 is the base layer at this works, and it is not the only document in the file. The same manufacturer also holds a Bureau Veritas Materials Approval and Mode II Recognition, a DNV Approval of Manufacturer, a Lloyd’s Register Works Approval, an ABS Product Design Assessment with a separate Manufacturing Assessment, a TÜV SÜD NORSOK M-650 qualification for offshore supply, an AD 2000 W 0 / PED certificate for European pressure equipment, an EAC certificate of conformity under TR CU 032/2013 and a GOST voluntary certificate for the Russian market.

The division of labour is straightforward. ISO 9001 answers whether the management system is third-party certified. A class society approval answers whether a defined product design, grade and size range is accepted for a defined service — marine and offshore process piping, for instance. NORSOK M-650 qualifies the manufacturing route against a Norwegian petroleum standard. AD 2000 W 0 / PED is the quality assurance route into EU pressure equipment. EAC and GOST answer market-access questions for the Eurasian Economic Union and Russia.

One approval does not extend another. A project that names both ISO 9001 and a class approval needs both documents valid at the time of shipment, and the grade, size and service have to fall inside each scope independently. When a specification cites a standard that is not on any of these documents, ask before ordering rather than after.

ABS PDA and MA · BV certificates · DNV approval of manufacturer · LR works approval · NORSOK M-650 · AD 2000 W 0 and PED · EAC (TR CU 032/2013) · GOST

See all factory certificates in one place

ISO 9001 certification FAQ

Request the certificate and order documents

The English-language certificate is available on request and can be reviewed in full, including the complete scope wording and all audited addresses. Together with a quotation we can supply the inspection certificate to EN 10204 3.1, dimensional and test reports, heat treatment records and, where the order calls for it, the class society or PED documentation that applies.

Send the specification, grade, size, quantity and destination, together with the documentation package your project requires, and Wenzhou Xinzhe will confirm what the works can issue against that order.

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