In short. Longrui Forging is certified to API Spec 20C (Monogram licence 20C-0051) and audited to API Spec Q1, and holds NORSOK M-650 material manufacturer qualification, PED 2014/68/EU and AD2000-W0 approval by TÜV NORD, BV Mode II NR320 (G0247) and ISO 9001:2015, ISO 14001 and ISO 45001. Chemical composition is verified heat by heat on an in-house spark spectrometer, and heat treatment, mechanical testing and NDT are recorded against the heat number. Every shipment leaves with a material test certificate and traceability from steel heat to finished part.
| Check | Detail |
|---|---|
| Certifications | API Spec 20C (Monogram 20C-0051); NORSOK M-650; PED 2014/68/EU; AD2000-W0 (TÜV NORD); BV Mode II NR320 (G0247); ISO 9001:2015, ISO 14001, ISO 45001 |
| Quality system audited against | API Spec Q1:2023 (10th edition) |
| In-house testing | Optical emission spectrometry, tensile testing, Charpy impact with low-temperature bath, Brinell hardness |
| NDT | Ultrasonic testing as standard; magnetic particle, penetrant and visual on request |
| With each shipment | Material test certificate, heat number traceable from steel to finished part |
Our Quality Philosophy
“A quality system is about prevention, not just inspection.”
Longrui Forging is certified to API Spec 20C, EU PED 2014/68/EU and AD2000-W0 by TÜV NORD, holds NORSOK M650 material manufacturer qualification and BV Mode II recognition, and operates ISO 9001:2015, ISO 14001 and ISO 45001 systems. Quality is engineered into every step, from incoming material verification through forging, heat treatment and NDT to final dimensional check, and every shipment carries full material traceability and test documentation.
Certification List
| Certification | Scope |
|---|---|
| API Spec 20C | Closed die forgings for oil & gas service (API Monogram license No. 20C-0051) |
| EU PED 2014/68/EU | Pressure equipment materials (TÜV NORD) |
| AD2000-W0 | Pressure vessel materials (TÜV NORD) |
| NORSOK M650 | Material manufacturer qualification (special materials) |
| BV (Bureau Veritas) | Recognition for forging manufacture, Mode II, NR320 (G0247) |
| ISO 9001:2015 | Quality management system |
| ISO 14001 | Environmental management system |
| ISO 45001 | Occupational health & safety |
Certification documents are available in PDF form on request.
What API Spec 20C and NORSOK M-650 cover, and what they mean for an oil and gas or offshore order, is set out on the API 20C & NORSOK M-650 page.
Our quality management system is audited against API Spec Q1 by API; what that audit covers is set out on the API 20C & NORSOK M-650 page.
Testing & Inspection Capabilities
Chemical analysis Italian GNR spark optical emission spectrometer, with full composition verification on every heat.
Mechanical testing Servo-hydraulic universal tensile machine, automatic Charpy impact tester with low-temperature bath, Brinell hardness testing.
Non-destructive testing Digital ultrasonic testing (UT) as standard, with magnetic particle (MT), penetrant (PT) and visual inspection (VT) on request.
Dimensional inspection Calipers, depth gauges and radius gauges, with full dimensional reporting.
Patented Forging Technology
We hold 5 granted patents on multi-directional closed-die forging tooling, including one invention patent:
- Invention patent: multi-directional forging die for valve covers with quick-change insert structure
- Utility models: closed-die forging dies for T-type copper bars, low-loss die design, quick-release combined valve-cover die, replaceable rear-cylinder punch for valve bodies
These proprietary dies give our valve bodies and covers superior dimensional consistency and grain flow.
Documentation We Provide
- Chemical composition & mechanical property test reports
- UT / NDT reports for every batch
- Heat-treatment charts and dimensional reports on request
- What each document type means, and how to read a mill certificate: material test certificates explained
Request our full certification pack →
Verifiable Identity
The legal entity behind these certificates is Zhejiang Longrui Forging Co., Ltd., No.108 Qihang Street, Bailongshan Subdistrict, Yunhe County, Lishui, Zhejiang 323600, China. When you check our approvals with the issuing bodies, quote the API Monogram licence number 20C-0051 or the BV certificate number G0247; certificate scans are sent on request.
Frequently Asked Questions
What certifications does Longrui Forging hold?
API Spec 20C, EU PED 2014/68/EU, AD2000-W0 (TÜV NORD), NORSOK M650, BV Mode II NR320 (G0247), ISO 9001:2015, ISO 14001 and ISO 45001. Certification documents are available in PDF on request.
What non-destructive testing can you perform?
Ultrasonic testing (UT) as standard, with magnetic particle (MT), liquid penetrant (PT) and visual testing (VT) on request; a report is issued for every batch.
What documentation comes with each shipment?
Material certificates, chemical composition and mechanical property test reports, and UT / NDT reports; heat-treatment charts and dimensional reports on request. Material identity is re-verified by handheld XRF before packing.
Are you a manufacturer or a trading company?
We are the manufacturer. Forging, heat treatment, machining and testing are carried out in our own plant in Yunhe County, Zhejiang, China; open-die forgings outside our die-forging range are supplied by us as well.