How long is your delivery time?

Normal products take 7-10 days; bulk orders take 15-25 days, depending on specific requirements.

What is the warranty time?

We provide a 3-year warranty for all stainless steel products, excluding gaskets and easily broken parts.

Can you provide testing reports?

Yes, we provide material certificates, mill certificates, pressure testing, roughness, measurement, and hardness reports.

GOST 12821-80 Standard Pn16 Welding Neck Flanges in 304/316

Name: GOST 12821-80 Standard Pn16 Welding Neck Flanges in 304/316
Brand: Shangdian Flange Pipe Fittings Co., Ltd.
SKU: 1992867865

Zhejiang, ChinaShangdian Flange Pipe Fittings Co., Ltd.

US$20.00

1-99 Pieces

US$19.00

100-999 Pieces

US$17.00

1,000+ Pieces

Product profile

Customization

Available

Standard

ANSI, DIN, GB, JIS, GOST, BSW, ASME

Type

Welding Flange

Model NO.

weld neck flange

Material

Stainless Steel

Structure

Flanges

Connection

Welding

Sealing Surface

Manufacturing Way

Forging

Flange Type

Weld Necked Flange

Shipping

Sea

Payment

T/T

Advantage

Factory

Transport Package

Wooden Box

Specification

DN15-DN1200

Trademark

SDFL

Origin

China

HS Code

7307210000

Production Capacity

500000

Key features

Comprehensive Quality Control: 100% inspection with PMI analyzers, hardness testers, and dedicated laboratory testing for every batch.

Flexible Customization: Full customization from samples or designs available, including specific surface treatments and markings.

Fast Delivery Options: Normal products delivered in 7-10 days; substantial inventory maintained for conventional flanges.

3-Year Quality Warranty: Covers all stainless steel products with 24-hour online support and professional engineering assistance.

Company profile

High Repeat Buyers ChoiceExperienced Team100% Finished Products InspectionLow MOQ

Shangdian Flange Pipe Fittings Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 8 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤1.71h

AI-Powered supplier vetting

SummaryThe supplier demonstrates substantial customization, ODM, 3D software design, and specialized R&D capabilities, including private mold design, eight R&D patents, eight registered trademarks, and an available SDK. Its production base lists multiple CNC, laser cutting, pressing, drilling, milling, and finishing machines, with standardized finished-product inspection instructions. Service infrastructure is comparatively limited: there is no valid manufacturing-capacity contract with associated subcontractors, no overseas warehouse, showroom, agent, or branch, and no overseas service countries reported. Service procedures exist for supplier assessment, corrective actions, and complaints, but records are not available. Financial information is incomplete and inconsistent across periods, so credibility cannot be established. No certification data or customer cases are provided.

Supplier typeThe supplier presents itself as a professional technical supplier with manufacturing equipment, 3D software design, ODM, and broad R&D/customization services. Its capabilities indicate a manufacturer-oriented and design-capable supplier, although the slices do not provide a formal legal or business classification.

R&D capabilityInnovation evidence includes ODM service, an available SDK, private mold design capability, eight R&D patents, and eight registered trademarks. However, the supplier also reports no new products in the past year, so the evidence supports established technical capability but not recent product innovation.

Production capacityThe supplier lists a broad machine base covering CNC machining, turning, drilling and milling, vertical turning, laser cutting, hydraulic pressing, and shot blasting, and states that finished-product inspection instructions are uniformly followed. It also reports inventory capability and one-month average lead times in both peak and off-season, but lacks a valid capacity contract with associated subcontractors.

Customization capabilityThe supplier explicitly offers customization from samples and designs, full, minor, and flexible customization, plus 3D software design and ODM services. Private mold design and multiple manufacturing processes further support its ability to handle customized products.