What payment methods are accepted?

We accept LC, T/T, D/P, PayPal, Western Union, Small-amount payment, and Money Gram.

What is the surface finish and condition of the tube?

The tube is available in soft condition with a bright surface finish.

Seamless Tube of Kovar

Name: Seamless Tube of Kovar
Brand: Shanghai Tankii Alloy Material Co., Ltd.
SKU: 698218452

Shanghai, ChinaShanghai Tankii Alloy Material Co., Ltd.

US$300.00

30 KG

Product profile

Customization

Available

Shape

Tube

Material

Feni

Model NO.

Kovar tube/ 4J29 tube

Condition

Soft

Surface

Bright

Diameter Outside

2-30mm

Diameter Inside

0.5-10mm

MOQ

5 Kgs

Sample

Free

Transport Package

Waterproof Paper, Wooden Case

Specification

RoHs

Trademark

TANKII-429

Origin

China

HS Code

750712000

Production Capacity

3000 Tons/Year

Key features

Kovar Alloy Composition: Nickel-cobalt ferrous alloy 29HK/4J29 designed for glass compatibility.

Thermal Expansion Match: Compatible with borosilicate glass thermal expansion characteristics.

Wide Diameter Range: Outer diameter 2-30mm, inner diameter 0.5-10mm available.

Soft Condition & Bright Surface: Available in soft condition with a bright surface finish.

Free Sample Offer: Free samples provided for evaluation purposes.

Low MOQ Requirement: Minimum order quantity is only 5 Kgs.

Vacuum Tube Application: Ideal for electroplated conductors in vacuum and X-ray tubes.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExhibition Experience

Shanghai Tankii Alloy Material Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2008-08-20Nearest Port: Shanghai, NingboAverage Response Time: ≤3.69hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, CIP, CPT, FCA

AI-Powered supplier vetting

SummaryThe supplier is a Shanghai-based limited trading company with 41 employees, associated companies, and a product scope covering nickel-chromium alloys, FeCrAl alloys, thermocouple wire, copper-nickel alloys, thermal spraying wire, Constantan, Manganin, and related alloys. It reports customization from designs and samples, ODM service, and OEM service for popular brands. Service procedures, corrective actions, and complaint-handling records are documented and followed. However, it reports no valid manufacturing contract with affiliated subcontractors, no overseas warehouse, showroom, agent, or branch, no available SDK, and no new products during the past year. Financial-year references are provided, but financial strength cannot be assessed from the available non-financial evidence.

Supplier typeThe supplier is identified as a limited company and trading company located in Baoshan District, Shanghai. Its stated business scope centers on sales of metal materials, alloys, hardware, electrical equipment, and related products, indicating a trading-oriented business model rather than an explicitly documented owned manufacturing operation.

After-Sales capabilityThe supplier has written and followed procedures for service assessment, corrective and preventive actions, and customer complaints. It offers debugging, has in-stock capability, accepts several service quotation and payment methods, and reports service coverage across the Americas, Asia, Africa, and Europe, but has no overseas warehouse, showroom, agent, or branch.

R&D capabilityThe supplier offers ODM services and customization from designs and samples, but reports no new products during the past year, no available SDK, and no ERP-based digital management. Sustainable-development, big-data, and OA capability entries are recorded as zero, providing no positive evidence of structured innovation or digital transformation.

Production capacityThe supplier reports in-stock capability, a one-month peak-season lead time, an off-season lead time within 15 working days, and 50 qualified suppliers. However, it explicitly lacks a valid contract between the factory and affiliated subcontractors, while the company is classified as a trading company; owned production capacity is therefore not established and subcontracting governance presents a stated deficiency.

Customization capabilityThe supplier explicitly provides customization from customer designs and samples, offers ODM services, and reports OEM service for popular brands. These statements directly support capability for design-based and sample-based customization, although no technical scope, equipment, or project examples are provided.