What is the lead time for delivery?

The average lead time is 30 days, with peak season taking one month and off-season within 15 workdays.

What payment terms do you accept?

We accept T/T and L/C as payment terms.

How are the springs packed for shipment?

The springs are packed in wood cases for safe transportation.

Hot Coiling Spring, High Quality Automotive Spring for Train

Name: Hot Coiling Spring, High Quality Automotive Spring for Train
Brand: Jiangsu Tedrail Industrial Co., Ltd.
SKU: 820926035

Jiangsu, ChinaJiangsu Tedrail Industrial Co., Ltd.

US$1.00-100.00

1,000 Pieces

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Function

Buffer

Material

Steel

Model NO.

TR-0018

Usage

Industrial, Bogie

Load Type

Compression

Production Process

Cold Roll

Shape

Coil

Packed

Wood Case

Payment

T/T,L/C

Delivery Time

30days

Wire Diameter

Custormized

Transport Package

Wood Case

Specification

custormized

Trademark

tedrail

Origin

China

HS Code

8602900000

Production Capacity

100, 000 Tons/ Year

Key features

Customized Wire Diameter: Wire diameter is fully customizable to meet specific customer requirements.

High Fatigue Life: K6 bogie spring fatigue life reaches 3 million cycles or more.

High-Speed Compatibility: Suitable for bogie passenger trains with a maximum speed of 300 km/h.

AAR Standard Compliance: Available with AAR standards for freight car trucks and suspension systems.

Diverse Material Options: Supply includes DIN, BS EN, JIS, and ASTM standard steels like 38Si7 and 55Cr3.

Advanced Heat Treatment: Uses intermediate frequency heating to reduce surface oxidation and decarburization.

Comprehensive Product Range: Offers helical coil, volute, leaf springs, and various bogie suspension components.

Global Export Experience: Exported to USA, South Africa, Brazil, and other regions since 2002.

Company profile

Jiangsu Tedrail Industrial Co., Ltd.

Jiangsu, China

Business Type: Manufacturer/FactoryExport Year: 2008-01-01Nearest Port: ZHANGJIAGANG, SHANGHAIAverage Response Time: >24hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DDP, DAP, FCA

AI-Powered supplier vetting

SummaryJiangsu Tedrail Industrial Co., Ltd. is identified as a Chinese manufacturer/factory specializing in railway-related products, including carbodies, passenger coaches, couplers, freight cars, train parts, and cold-bending parts. The supplier reports more than 10 production lines, 50 years of combined R&D-engineer experience, 11–20 quality-control staff, and stated production capacities across several railway product categories. It reports ISO 9000 and ISO 9001 certification and describes multiple material and product testing methods. Export activity is indicated by 90% export sales, self-managed import/export rights, and exporting activity since 2008. Evidence is insufficient to verify financial strength, customization performance, after-sales capability, or a substantial customer-case history. The factory address differs slightly between records, which should be clarified during due diligence.

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and a limited company located in Jiangsu, China. Its stated commercial scope and product keywords are concentrated in industrial equipment and railway products, including carbodies, couplers, freight cars, train parts, and interiors.

CertificationsThe supplier reports holding ISO 9000 and ISO 9001 certification. The slices do not provide certificate numbers, issuing bodies, validity dates, or scope, so the existence is reported but its current validity cannot be independently assessed.

R&D capabilityThe supplier reports 50 total experience among R&D engineers and describes a technical team experienced in railway-product design, manufacture, and inspection. It also lists chemical, metallographic, mechanical, ultrasonic, magnetic, impact, and hardness testing, supporting technical competence, but no explicit evidence of patented technology, new-product development, or measurable innovation outcomes is provided.

Production capacityThe supplier reports more than 10 production lines, 11–20 quality-control staff, and stated annual capacities of 200 carbodies, 1,200 coupler sets, 500 freight cars, 10,000 train-part sets, and 3,000 tons of aluminum profiles. Its 90% export-sales share and self-managed import/export rights further indicate established production and export operations.

Product Q&A

Q:What is the maximum speed for trains using these springs?

The springs are designed for bogie passenger trains with a maximum speed of 300 km/h.

Q:Can the wire diameter be customized?

Yes, the wire diameter is fully customizable to meet specific customer requirements.

Q:What materials are available for these springs?

We supply various materials including Silico-Manganese Steel (e.g., 38Si7, 54SiCr6) and Chrome-Vanadium Steel (e.g., 55Cr3, 50CrV4) meeting DIN, BS EN, JIS, and ASTM standards.

Q:What is the fatigue life of the K6 bogie spring?

The K6 bogie spring has a fatigue life that reaches 3 million cycles and above.

Q:Do you offer springs that comply with AAR standards?

Yes, AAR standard freight car truck springs, including primary suspension and dual rate springs, are available.