What are the main technical parameters for the outer and inner springs?

Outer spring: OD 287.6mm, bar diameter 36.3mm, free height 253.5mm. Inner spring: OD 200mm, bar diameter 26.5mm, free height 253.3mm.

How long is the lead time for orders?

Peak season lead time is one month, while off-season lead time is within 15 workdays.

What payment terms are accepted?

Accepted payment terms include LC (Letter of Credit) and T/T (Telegraphic Transfer).

China Manufacturer Heavy Duty Train Compression Springs

Name: China Manufacturer Heavy Duty Train Compression Springs
Brand: Jiangsu Tedrail Industrial Co., Ltd.
SKU: 820660355

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

Technical Support

Yes

Transport Package

Wood Case

Specification

custormized

Trademark

tedrail

Origin

China

HS Code

9031809090

Production Capacity

100, 000 Tons/ Year

Key features

High Fatigue Life: K6 bogie spring reaches 3 million cycles; K2 spring reaches 2.6 million cycles.

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

AAR Standard Compliance: Freight car truck springs available with full AAR standard certification.

Diverse Material Options: Available in DIN, BS EN, JIS, and ASTM standards including Silico-Manganese and Chrome-Vanadium steels.

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

Comprehensive Product Range: Includes Helical Coil, Volute, and Leaf springs for freight, passenger, and locomotive use.

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

Precision Manufacturing: Cold roll production process ensures high quality and dimensional accuracy.

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.