Engineering & technical review
CAD/3D drawing review, valve configuration, material selection, actuation sizing and service-condition checks.
Who we are
Manufacturing Footprint & Project Quality Controls
From technical drawing sign-off to factory floor execution, SMD delivers industrial valves engineered exactly to your project specifications.
Each contract specifies dedicated manufacturing bays, audited quality plans, and signed inspection records aligned with your GA and ITP requirements.
Manufacturing operations
A working view of SMD Flow Control's manufacturing floor
SMD coordinates engineering, production tracking, and QC records across its manufacturing operations—one contact for your PO.
COMPLIANCE & QUALIFICATION
Manufacturing Licenses & Auditable Quality Certifications
SMD executes manufacturing in its own production operations under audited quality systems. All published licenses (API, CE/PED, ISO) belong directly to the operations where your valves are cast, machined, and hydro-tested.
Engineering & quality team
15 Engineering & Quality Specialists
Senior engineers and QA staff take you from valve selection through MDR release—on API, ASME, and ISO jobs.
15senior engineering & QA/QC specialists
Average 10+ years industry experience
In-house ASNT / ISO 9712 NDT qualified inspectors
QA/QC & inspection coordination
Incoming material checks, in-process machining controls, dimensional review, NDE planning and API 598 test witnessing.
NDT and traceability support
Certified inspectors support UT / MT / PT / RT review, heat-number traceability and PMI coordination, with controlled evidence maintained against the approved project ITP.
Project dossier support
MDR compilation, EN 10204 documentation, inspection release packages and coordination with client or third-party inspectors.
Manufacturing Operations
How SMD Executes Precision Valve Manufacturing
From raw casting verification to automated hydrostatic testing, SMD enforces end-to-end quality controls and signed ITP protocols across every manufacturing stage.
Capabilities at a Glance
- Portfolio range
- Valve sizes up to 56 in and pressure classes through Class 2500 across the portfolio.
- Project-specific selection
- We confirm size and pressure-class combinations for each valve design and service before we quote lead time.
- Inspection basis
- We run inspection stages to your approved drawings, product standard, and signed ITP—hold and witness points included when scoped.
- Quality records
- We compile heat traceability and inspection records to the specification and document index on your PO.
Material Receipt & PMI
SMD runs direct-reading OES PMI and dimensional incoming verification against your purchase spec before machining.
Precision Machining
Multi-axis CNC turning and boring centers machine critical valve trim and sealing boundaries to tight tolerance.
API 598 Hydrostatic Testing
Automated test benches verify shell integrity and zero-leakage seating, recorded directly into your order’s MDR.
Final Assembly & Release
Integrated painting, tagging to MSS-SP-25, and third-party inspection (TPI) witness points before export packaging.
Business scope
What we make and where it goes
Skim this page to see if we're the right valve partner—then send the datasheet for a real scope review.
Valve portfolio
- Ball valves
- Gate valves
- Globe valves
- Check and wafer check valves
- Butterfly valves
- Plug valves
- Strainers and related flow-control equipment
- Configured and private-label project supply
Industries served
- Oil, gas and pipeline systems
- Refinery and chemical processing
- Nuclear and power stations
- Marine and seawater systems
- Potable water, wastewater and sewage
- Industrial utilities and equipment packages
Materials
We supply WCB/LCC, stainless, duplex, Monel, Inconel, Hastelloy, and iron bodies—picked for your service, not from a generic menu.
Standards we work to
We design to API, ASTM, ANSI, AWWA, JIS, DIN, BS, and ISO as your spec names them—we confirm clause-by-clause on quote.
EPC PROJECT EXECUTION
How we run EPC project quality
Your PO and ITP set traceability, hold/witness points, and records—we walk through them before you release the order.
Materials & traceability
When your spec asks for it, every heat ships with EN 10204 MTR and trace back to the melt.
Inspection & testing
Inspection steps and pass/fail criteria follow your GA, the product standard, and the signed ITP.
Third-party witnessing
Need SGS, BV, TÜV, or DNV at the shop? We book witness points when they are in your project scope.
Technical review
We review datasheets, drawings, materials, and actuator sizing inside the engineering scope you buy.
SAMPLE QUALITY PACK
Sample quality pack (redacted MDR & ITP)
See a redacted MDR sample: 3.1 MTRs, API 598 hydro logs, PMI sheets, and dimension reports—what your QA team usually asks for.
✓ EN 10204 3.1 Material Test Reports (MTR)✓ API 598 Hydrostatic & Pneumatic Shell / Seat Logs✓ Positive Material Identification (PMI) Spectrometry✓ Third-Party Witness Hold Points (SGS / BV / TÜV / DNV)
OEM / ODM PARTNERSHIP
Confidentiality, tooling and brand controls
We put confidentiality, drawing access, customer tooling, and marking rules in writing before tooling or production starts.
Confidentiality & Drawing Vault
Strict proprietary drawing and 3D model containment under binding NDAs, preventing leakage to open market.
Dedicated Tooling & Pattern Bays
Dedicated tooling assets stamped with client-specific tracking codes; stored in isolated pattern bays with zero unauthorized casting access.
Private Label & Neutral Packaging
Complete private-labeling complying with MSS-SP-25 marking requirements, custom tag plates, and neutral ISPM-15 wooden crating.
TESTING & METROLOGY
Testing & Metrology Equipment Matrix
Calibrated PMI, hydro benches, and NDT gear—we use them to back your ITP, not as marketing wallpaper.
Direct-Reading Optical Emission Spectrometer (PMI)
Chemical composition and heat-number verification of raw castings and forgings.
Certified Inspection Baseline
Ultrasonic Thickness Gauge & Flaw Detector (UT)
Subsurface defect scanning and wall thickness integrity verification.
Certified Inspection Baseline
Digital Surface Roughness Tester (Mitutoyo)
Precision flange sealing face and valve stem micro-finish measurement.
Certified Inspection Baseline
Cryogenic & High-Temperature Testing Benches
Low-temperature liquid nitrogen (-196°C) and elevated temperature seating verification.
Certified Inspection Baseline
Hydrostatic & Pneumatic Test Benches (API 598)
Shell testing up to 600 bar, high-pressure liquid seat and low-pressure air leakage testing.
Certified Inspection Baseline
Magnetic Particle (MT) & Dye Penetrant (PT) Stations
Surface crack detection on weld overlays and critical pressure boundaries.
Certified Inspection Baseline
Operating philosophy
ACTION: a practical framework for long-term supply relationships
AAdopt relevant technologyCCustomer and peopleTTrain and developIImprove engineeringOOptimize systemsNNever lose service focus
PROJECT DELIVERIES
Selected SMD Flow Control Project Deliveries
Representative valves we have delivered for EPC and OEM jobs—marking, preservation, packing, and records follow the approved order, not a generic gallery caption.
Trunnion ball valves prepared for final release
Project Ref: Desalination Expansion | 4" Class 300 Trunnion Ball | A105 Body | 100% RT Tested
Large-bore ball valve production lot
Project Ref: Refinery Tank Farm Isolation | 16" Class 600 API 600 Gate | ASTM A216 WCB + Stellite | TPI by BV
Control valve production lot
Project Ref: Petrochemical Processing Unit | 8" Class 300 Ball Control Valve | A105 Body | 4-20mA Positioner
Stainless valve production lot
Project Ref: Gas Pipeline Metering Skid | 2" x 1 1/2" Class 900 DBB Ball Valve | Duplex 2205 Body & Trim | API 6D Fire-Safe
Auto-scrolling real shipment records · hover or focus to pause
TECHNICAL FAQ
Engineering & Compliance Questions for EPC & OEM Buyers
Direct technical answers on material traceability, international inspection coordination, and private-label standards.
How does SMD Flow Control ensure material heat traceability from raw foundry to finished valve?▾
Every raw casting and forging is tagged with a traceable heat number at receipt. Spectrochemical PMI and mechanical properties are cross-verified against EN 10204 3.1 certificates before precision CNC machining, linking each finished valve directly to its original melt heat.
Does SMD coordinate with international third-party inspection agencies (TPI)?▾
Yes. Our testing facilities regularly host SGS, TÜV, BV, and DNV inspectors for witness hold points, including hydrostatic shell/seat tests, ultrasonic testing (UT), dye penetrant (PT), and painting dry film thickness (DFT) checks.
What private label and OEM standards are supported for international brands?▾
We provide complete private-labeling adhering to MSS-SP-25 marking requirements, custom pattern fabrication under non-disclosure agreements (NDA), customized tag plates, and neutral ISPM-15 wooden crating.
Next step
Want the process behind the scale?
Open Capabilities to see how we engineer, build, test, and document OEM/ODM orders.
| Table description | |||
|---|---|---|---|
| Foundational facts about SMD Flow Control as an engineering-led manufacturer, not a trading company. Numbers here match the data shown elsewhere on the site. | |||
| Parameter | Value | Unit | Standard |
| Year established | 2016 | year | Company registration |
| Legal entity | Wenzhou Shengmingde Fluid Control Co., Ltd. | — | Business licence |
| Plant location | Yongjia County, Wenzhou City, Zhejiang, China | — | Operational address |
| Engineering scope | Design, foundry, machining, assembly, inspection, project documentation | 6 functions | ISO 9001:2015 |
| Standard coverage | API 6D, 600, 602, 608, 609, 598, 607, 624, 6FA; ASME B16 series; ISO 5208, 15848-1; EN 12266, 10204 | 20+ standards | Industry library |
| Primary markets | EPC contractors, OEM/ODM, distributors, process industries (oil & gas, chemical, power, water) | 4 channels | — |
| Languages served | English, Chinese, Spanish, French, German, Portuguese, Russian, Arabic | 8 languages | — |