NANTONG · CHINA CLEAN ENERGY INDUSTRY SYSTEM ONLINE

Forged with precision for clean energy.

HEYSEANT specializes in forged steel flanges and forging manufacturing, with special alloys including Inconel 625, Hastelloy C276 and Monel 400 — plus PV cells and new energy equipment for clean energy projects worldwide.

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Special alloys & custom specifications · Reply within 1 business day

  • 3 PRODUCT LINES
  • 5 EXPORT REGIONS
  • 22 FLANGE MODELS
  • 1day RESPONSE TIME
HS / FORGE-01 LIVE
Stainless steel flange technical illustration FORGED STAINLESS · SPECIAL ALLOY PRECISION / TRACEABLE / GLOBAL
MATERIAL Ni-ALLOY / SS
PROCESS FORGED · MACHINED
TRACE BATCH · LOT
MATERIAL TRACEABILITY RF / RTJ / AWWA
STAINLESS STEEL FLANGE INCONEL 625 HASTELLOY C276 MONEL 400 PV CELL PV EQUIPMENT OEM / CUSTOM GLOBAL DELIVERY

01ABOUT HEYSEANT

Rooted in forging.
Built for clean energy.

From special-alloy flanges to PV products and equipment, we connect material expertise, manufacturing experience and global delivery into one complete value chain.

COMPANY PROFILE HEYSEANT / NANTONG

We specialize in forging, with in-house capabilities for forged steel flanges and forging manufacturing — consistent quality at competitive prices.

Beyond standard stainless steel, we supply special alloys including Inconel 625, Hastelloy C276 and Monel 400. Our products are exported to Europe, the Middle East, South America, Southeast Asia, Africa and other regions.

With an energetic team and a disciplined management system, we support customers from product distribution to engineering development, with clean energy technology as a long-term focus.

  • 01Integrity
  • 02Expertise
  • 03Innovation
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HEADQUARTERS A/01

Nantong, CN

Jiangsu · near Shanghai

PRODUCT SYSTEM A/02

3lines

Flanges · PV cells · PV equipment

EXPORT MARKETS A/03

5regions

Europe · Middle East · S. America · SE Asia · Africa

RESPONSE A/04

1day

Quotes & technical support

Competitive price. Reliable quality. On-time delivery.

OUR COMMITMENT

02PRODUCT SYSTEMS

Three product lines.
One clean energy goal.

From connection components to energy conversion and engineered equipment, we cover different stages of project procurement — and evaluate special materials and non-standard specifications against your drawings.

01 STAINLESS STEEL FLANGE / 22 MODELS

Stainless Steel Flanges

Forged steel flanges and forging manufacturing, covering tubes, valves, fasteners and special flanges — with special alloys and non-standard specifications evaluated against your drawings.

  • TUBES
  • VALVE
  • FASTENERS
  • SPECIAL FLANGE
  • RING
  • FORGING RING
  • RED-WNRF
  • PLRF
  • LWNFF
  • LWNRF
  • BLRTJ + WNRTJ
  • AWWA
AVAILABLE MATERIAL

Stainless · 625 · C276 · 400

FORM

Standard / custom

Explore flange line
02 PV / CELLS

PV Cells

PV cell products for clean energy applications, serving module manufacturing and distributed energy projects.

  • PV CELL
  • CLEAN ENERGY
View PV cells
03 PV / EQUIPMENT

PV & New Energy Equipment

From product distribution to engineering development, delivering reliable, economical and effective clean energy solutions with market support.

  • DISTRIBUTION
  • ENGINEERING
Explore PV equipment
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03MATERIALS

Special alloys.
Where reliability begins.

Material is not just a line on a specification sheet — it is the starting point for corrosion resistance, high-temperature performance and long-term stability. We evaluate the right grade for your media, temperature and pressure.

Ni-Cr-Mo

Inconel 625

UNS N06625

A nickel-chromium-molybdenum alloy combining high-temperature strength with oxidation and corrosion resistance.

  • High-temp strength
  • Oxidation
  • Corrosion
Ni-Mo-Cr

Hastelloy C276

UNS N10276

A nickel-molybdenum-chromium alloy for highly corrosive media and demanding industrial conditions.

  • Severe corrosion
  • Wet chlorine
  • Chemical processing
Ni-Cu

Monel 400

UNS N04400

A nickel-copper alloy that performs reliably in seawater and acid/alkali media.

  • Seawater
  • Acids & alkalis
  • High strength
AUSTENITIC

Austenitic Stainless

304 / 316L STAINLESS

General corrosion resistance and good formability for standard flanges and matching components.

  • General corrosion
  • Formable
  • Wide application

MATERIAL ADVISORY Not sure which grade fits? Send us your operating conditions and we'll evaluate them together. Talk to an engineer

Explore material capability

04PROCESS & QUALITY

From drawing to delivery.
Every step traceable.

Material, process and dimensional consistency are managed as one closed loop from requirement review to final delivery — so every collaboration has a clear basis.

  1. 01

    Requirement review

    Clarify material, size, standard and service conditions; assess manufacturability and delivery scope.

  2. 02

    Material traceability

    Verify special-alloy grades and batch information; build a clear material record.

  3. 03

    Forging & forming

    Heating, forging and forming to process requirements, controlling structure and performance.

  4. 04

    Heat treatment & machining

    Stabilize critical dimensions and performance through heat treatment, machining and surface finishing.

  5. 05

    Inspection & delivery

    Dimensional and visual inspection, project-specific packaging and delivery.

CUSTOM ENGINEERING Special materials, non-standard sizes and engineered packages evaluated against your drawings.

Explore the full process Submit your requirements

05GLOBAL REACH

From Nantong
to global markets.

Our products are exported to Europe, the Middle East, South America, Southeast Asia, Africa and other regions. For standard products and custom projects alike, we respond with consistent quality and on-time delivery.

EXPORT MARKETS / 05

  • 01 Europe EU / 01
  • 02 Middle East ME / 02
  • 03 South America SA / 03
  • 04 Southeast Asia SEA / 04
  • 05 Africa AF / 05

Standard and custom deliveries · NANTONG → WORLD

Explore global markets
DELIVERY NETWORK ORIGIN 31.98°N 120.89°E
HEYSEANT global export markets diagram 01 EU 02 ME 03 SA 04 SEA 05 AF NANTONG GLOBAL DELIVERY / STANDARD & CUSTOM
EXPORT MARKET ORIGIN 5 REGIONS

06NEWS & INSIGHTS

Industry notes,
keeping a pulse on the market.

An archive of company and industry updates originally published in 2017. Figures may be out of date — contact us for current information.

Company News

Clean energy prioritized as 13th Five-Year Plan sets RMB 450 billion power-substitution target

China's 13th Five-Year Plan for electric power prioritizes clean energy and targets a higher share of non-fossil energy by 2020.

Read more
Company News

China's solar industry rebounds to become the world's largest

From the 2012 downturn to global leadership, China's PV industry rebuilt itself through policy and market development.

Read more
Industry News

IEA outlook: natural gas and renewables set to displace coal over the next 25 years

The IEA's World Energy Outlook expects natural gas, wind and solar to displace coal, with policy remaining decisive.

Read more
View all news

07CONTACT

Let's talk
technical.

Your next project starts with a conversation. For special materials, non-standard specifications or engineered packages, send us your drawings and parameters — we'll reply within one business day.

Send an inquiry +86 513 8773 0529
INQUIRY HOTLINE
+86 158 9620 2308
ADDRESS
Building 8, 1106-1
Tongfu Fu'erle City
Nantong Development Zone, Jiangsu, China
FAX
+86 513 8773 0529