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Drawbar Coil Spring with Stable Performance
US$1.00-100.00
1,000 Pieces
Sample price:US$1.00/piece.Request sample
Product profile
Customization
AvailableFunction
BufferMaterial
SteelModel NO.
TR-0018Usage
Industrial, BogieLoad Type
CompressionProduction Process
Cold RollShape
CoilPacked
Wood CasePayment
T/T,L/CDelivery Time
30daysWire Diameter
CustormizedTransport Package
Wood CaseSpecification
custormizedTrademark
tedrailOrigin
ChinaHS Code
8602900000Production Capacity
100, 000 Tons/ YearKey features
Customizable Wire Diameter: Wire diameter can be customized to meet specific customer requirements.
High Fatigue Life: K6 bogie springs reach up to 3 million cycles; K2 springs reach 2.6 million cycles.
AAR Standard Compliance: All springs can be supplied meeting AAR standards for freight car trucks.
High-Speed Application: Designed for bogie passenger trains with a maximum speed of 300 km/h.
Diverse Material Options: Available in Silico-Manganese and Chrome-Vanadium steels per DIN, BS, JIS, and ASTM standards.
Precision Manufacturing: Uses intermediate frequency heating to reduce surface oxidation and decarburization.
Comprehensive Product Range: Includes Helical Coil, Volute, Leaf, and D-springs for various railway applications.
Global Export Experience: Exported to USA, South Africa, Brazil, and other regions since 2002.
Company profile

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:Can the wire diameter be customized?
A:
Yes, the wire diameter is customizable to meet specific customer requirements.
Q:What is the fatigue life of the bogie springs?
A:
K6 bogie springs have a fatigue life of up to 3 million cycles, while K2 springs reach 2.6 million cycles.
Q:Are the springs compliant with AAR standards?
A:
Yes, AAR standard freight car truck springs are available, and all springs can be supplied with AAR standards.
Q:What is the maximum speed for trains using these springs?
A:
These springs are designed for bogie passenger trains with a maximum speed of 300 km/h.
Q:What materials are available for the springs?
A:
We offer Silico-Manganese and Chrome-Vanadium steels complying with DIN, BS EN, JIS, and ASTM standards.
Send Inquiry
*To:
Jiangsu Tedrail Industrial Co., Ltd.
Jiangsu Tedrail Industrial Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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