What certifications does the product have?

The product is produced under ISO9001, ISO/TS16949, IATF 16949, and GB/T 19844-2018 certified processes.

What payment terms are accepted?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

Does the product support OEM or ODM services?

While the specific attribute lists OEM as No, the company profile confirms that both OEM and ODM services are available for customization.

Factory Supply American Underslung Mechanical Suspension with Leaf Spring for Semi Trailer Parts & Accessories

Name: Factory Supply American Underslung Mechanical Suspension with Leaf Spring for Semi Trailer Parts & Accessories
Brand: Shandong Weierqi Vehicle Parts Co.,Ltd
SKU: 2283993085

Shandong, ChinaShandong Weierqi Vehicle Parts Co.,Ltd

US$100.00

50-199 Pieces

US$20.00

200+ Pieces

Product profile

Customization

Available

After-sales Service

Provided

Warranty

12month

Model NO.

Leaf Spring

Material

60si2mn

Certification

ISO9001

Position

Front

OEM

Type

Leaf Spring

Size

Customized

Total Layers

7/8/9/10/12/14/16PCS

Width

90mm/100mm/120mm(or Customization)

Length

1130mm/1200mm(The Length of Each Piece Can Be Cust

Transport Package

Pallet

Specification

As Your Request

Trademark

WEQ

Origin

China

Production Capacity

500 Sets/Month

Key features

Customizable Dimensions: Size, total layers (7-16), width, and length can be customized to specific requirements.

High Fatigue Resistance: Exceptional fatigue life exceeding 120,000 cycles, surpassing the industry standard of 100,000 cycles.

Premium Material Grade: Manufactured using high-quality 60Si2Mn alloy steel for superior strength and durability.

Advanced Heat Treatment: Quenching and tempering process achieves optimal hardness of 41-48 HRC for flexibility.

Corrosion Protection: Surface treated with electrostatic painting, powder coating, or galvanization for rust resistance.

Rigorous Quality Control: 100% inspection including stiffness, arc height, and material composition analysis.

Wide Load Capacity: Supports load capacities ranging from 5,000kg to 50,000kg per spring assembly.

Company profile

Importers and ExportersPatents AwardedQuality AssuranceProduct Certification

Shandong Weierqi Vehicle Parts Co.,Ltd

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤0.83h

AI-Powered supplier vetting

SummaryWelch is a professional towing-device and trailer-accessory supplier with casting, machining, manufacturing, sales, and export capabilities. It offers a broad product range, including traction devices, pintle hooks, turntables, king pins, fifth wheels, landing gear, trailer couplings, and drawbar eyes. The supplier reports ISO9001:2015 certification, documented warehouse and finished-product inspection procedures, three quality-control staff, two test-equipment units, and two R&D engineers. It provides 3D software design and multiple forms of customization, supported by CNC, drilling, boring, induction-heating, milling, painting, and shot-blasting facilities. R&D engineers provide technical support during production and after-sales service. The supplier reports domestic mainstream OEM and upfitter supply and exports to several regions, but no Fortune 500 cooperation. Financial information is present only as year labels, so financial credibility cannot be assessed.

Supplier typeThe supplier identifies itself as a professional technical supplier and conducts casting, manufacturing, sales, and export of towing devices and trailer accessories. Its listed product portfolio covers major towing-system components, indicating a specialized manufacturer rather than a general trading supplier.

CertificationsThe supplier reports an ISO9001:2015 management-system certificate. However, product compliance certification is recorded only as “Others,” without naming a specific product standard or certificate.

After-Sales capabilityThe two technology engineers are responsible for technical support during production and after-sales service, and the supplier provides technical support tied to customer requirements. This explicitly supports after-sales technical assistance, although the breadth and response performance of the service are not stated.

R&D capabilityWelch reports multiple utility model patents, national automotive standard-drafting membership, two R&D engineers, and new-product-development responsibilities. It also provides 3D software design services, but reports no available SDK; the evidence still supports product-development and technical innovation capability.

Production capacityThe supplier operates or reports access to casting and a range of production facilities, including CNC lathes, machining centers, vertical lathes, drilling, boring, induction heating, gantry milling, painting, and shot blasting. Written warehouse and finished-product inspection procedures are reportedly followed, with three quality-control staff and two test-equipment units.

Customization capabilityWelch explicitly supports OEM/ODM customization and machining according to drawings. It offers customization from samples, designs, full customization, minor customization, and flexible customization, together with 3D software design services.

Client casesThe supplier states that its products supply mainstream domestic OEMs and upfitters and are exported to Africa, Southeast Asia, South America, the Middle East, and other global markets. It reports no cooperation with Fortune 500 companies, so the customer evidence demonstrates market reach but not top-tier multinational customer reference strength.

Product Q&A

Q:What customization options are available for the leaf spring?

We offer customization for size, total layers (7-16 PCS), width (90/100/120mm or custom), and length. Specific dimensions can be tailored to your needs.

Q:What is the warranty period for this product?

We provide a 12-month warranty for this semi-trailer leaf spring.

Q:What material is used to manufacture these leaf springs?

The primary material used is 60Si2Mn alloy steel, known for its high strength and fatigue resistance.

Q:What is the minimum order quantity (MOQ)?

The minimum order quantity is 1 piece.

Q:What are the lead times for production?

Lead time varies by season: within 15 workdays during the off-season, and 1-3 months during the peak season.