How long is your delivery time?

For normal products in 7-10 days; For bulk order, in 15-25 days. It depends.

What is the warranty time?

3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers.

Can you provide us with the testing report?

Yes, we can provide the required material reports, such as the material certificate, mill certificate, pressure testing report, roughness report, measurement report, and hardness report.

Durable Stainless Steel DN50 Flange Joint with Rubber Expansion Bellows

Name: Durable Stainless Steel DN50 Flange Joint with Rubber Expansion Bellows
Brand: Shangdian Flange Pipe Fittings Co., Ltd.
SKU: 1924286441

Zhejiang, ChinaShangdian Flange Pipe Fittings Co., Ltd.

US$3.00

1-99 Pieces

US$2.80

100-999 Pieces

US$2.50

1,000+ Pieces

Sample price:US$4.00/piece.Request sample

Product profile

Customization

Available

Standard

ANSI, DIN, GB, GOST, BSW, ASME

Type

Welding Flange

Model NO.

Lap Joint Flanges

Material

Stainless Steel

Structure

Flanges

Connection

Welding

Sealing Surface

Manufacturing Way

Forging

Flange Type

Lap Joint Flange

Transport Package

Wooden Box

Specification

DN15-DN1200

Trademark

SDFL

Origin

China

HS Code

7307210000

Production Capacity

500000

Key features

Wide Customization: Customizable flange types, sizes DN15-DN4000, and materials including 304/316L stainless steel.

Comprehensive Certifications: ISO 9001, CE, and PED certified; complies with ANSI, DIN, GB, and ASME standards.

Fast Delivery Options: 7-10 days for normal products; extensive inventory available for conventional pipe fittings.

Professional Support: 24/7 online support with 24-hour response time for quality issues and technical inquiries.

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: ≤1.60h

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.

Product Q&A

Q:Are you a trading company or factory?

We are a manufacturer boasting 15 years of industry experience and holding proprietary import-export rights.

Q:May I request free samples?

Free samples can be provided for first cooperation under sincere cooperation.

Q:What certifications do you have?

Yes, we hold ISO, CE, and PED certificates. In addition, we possess a number of design patents and a Special Equipment Manufacturing License.

Q:How do you control the quality?

In quality control, the most critical aspect is preventing material mix-ups. Our factory has installed multiple spectroscopic PMI analyzers in the raw material warehouse, production workshop, and dispatch area. Equipment such as pressure testing machines, PMI analyzers, RA roughness testers, and hardness testers all contribute to ensuring quality. Additionally, we have our own laboratory and can provide extra test data for special products. During the production process, dedicated inspectors con

Q:If there is any quality problem, how do you solve it?

We believe that protecting our clients' interests is the cornerstone of our business. While we cannot guarantee 100% perfection, occasional quality issues may still arise. Depending on the specific situation, we typically resolve such cases through replacements, compensation, or resending goods. The specific solution will be discussed and agreed upon with the customer based on the actual circumstances.