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Uns S31803 Duplex Stainless Steel Pipe
US$670.00
50-99 Tons
US$660.00
100-199 Tons
US$650.00
200+ Tons
Sample price:US$500.00/piece.Request sample

Product profile

Customization

Available

Type

Stainless Steel Bars

Standard

ASTM

Model NO.

UNS S31803 Duplex Stainless Steel

Grade

300 Series

Certification

ASTM

Shape

Round

Technique

Cold Rolled

Surface Treatment

Bright

Transport Package

Full

Specification

Customized

Trademark

Shanshui

Origin

Liaocheng

HS Code

7201500010

Production Capacity

5000 Tons/Year

Key features

High Mechanical Strength: Twice the strength of Type 304 austenitic stainless steel, reducing plate thickness and weight.
Superior Corrosion Resistance: Excellent resistance to chloride pitting, crevice corrosion, and seawater environments.
Cost-Effective Solution: Lower cost compared to other duplex steels due to lower molybdenum content.
Versatile Applications: Widely used in oil & gas, chemical, marine, desalination, and paper industries.
Excellent Weldability: Good weldability in thick plates with resistance to stress corrosion cracking.
Dual Certification: S32205 can be dual-certified as S31803, ensuring high performance standards.
Low Temperature Toughness: Maintains toughness in low temperature environments for various applications.
Minor Customization: Available for minor customization options to meet specific client needs.

Company profile

Shandong Chenze Steel Co., Ltd.
Quality AssuranceIn-stock Capacity
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Minor Customization CertifiedExport Year: 1 year CertifiedNearest Port: Qingdao Port, Tianjin PortAverage Response Time: ≤6.17h CertifiedTerms of Payment: T/T, LC

AI-Powered supplier vetting

SummaryThe supplier is explicitly identified as a professional technical supplier with R&D capability, 3D software design services, and broad customization options. It provides ODM and OEM services, has valid manufacturing contracts with associated subcontractors, in-stock capability, and documented procedures for supplier assessment, corrective actions, and complaint handling. Export activity is established, with 11 years of exporting experience, self-operated import/export rights, and exports representing 51%–70% of sales. However, the supplier has no available SDK, reported no new products in the past year, lacks overseas warehouses, showrooms, agents, and branches, and has not participated in offline trade shows. Finished products are checked by packing staff, while raw-material traceability is absent. No certification information, explicit after-sales service information, or customer case details are provided.
Supplier typeThe supplier is explicitly described as a professional technical supplier. Its stated business scope covers metal materials, hardware products, hardware R&D, special steel materials, and import/export activities, indicating a hardware and metal-materials supplier with technical development capability.
After-Sales capabilityThe supplier has clear procedures and followed records for handling customer complaints and corrective/preventive actions, which supports service-process capability. However, no broader after-sales service coverage, service network, or response commitment is provided.
R&D capabilityThe supplier reports professional R&D capability, 3D software design services, and ODM capability. However, it has no available SDK and reported no new products in the past year, indicating some innovation limitations despite design and development services.
Production capacityProduction support is evidenced by valid contracts with each associated subcontractor, in-stock capability, lead times within 15 working days in both peak and off-season, five qualified service-capability suppliers, and documented assessment procedures. Quality assurance is present, although finished-product checking is performed by packing staff and raw-material traceability is unavailable.
Customization capabilityThe supplier explicitly offers customization from designs, samples, full customization, minor customization, and flexible customization. Its ODM and OEM services further support the conclusion that it can undertake customized product development and manufacturing.
Client casesThe supplier states that it provides OEM services for well-known brands, which is direct evidence of at least one type of customer engagement. No named customers, project details, order scope, or performance outcomes are supplied, so the breadth and verifiability of customer cases remain unclear.

Product Q&A

Q:How does UNS S31803 compare to Type 304 stainless steel?
A:
UNS S31803 typically has twice the strength of Type 304 and offers significantly better corrosion resistance.
Q:What are the main differences between S31803 and S32205?
A:
S32205 is a higher-performing grade with optimized levels of chromium, molybdenum, and nitrogen, meeting the top end of the specification range.
Q:What are the minimum mechanical properties of UNS S31803?
A:
Minimum Tensile Strength is 620 MPa, Yield Strength is 450 MPa, Elongation is 25%, and Max Hardness is 290 HB.
Q:What are the available surface treatment options?
A:
Options include Black Surface, Grounded, Machining, Peeled/Turned, and Polished finishes.
Q:What is the Minimum Order Quantity (MOQ)?
A:
The Minimum Order Quantity is 25 tons.

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