What secondary operations are available?

We provide shot blasting, heat treatment, CNC machining, surface treatment, assembly services, and custom packaging.

What is the Minimum Order Quantity (MOQ)?

The Minimum Order Quantity is 100 pieces.

How do you ensure product quality?

We perform 100% inspection including visual and function checks, and provide spectrometer material certifications for first articles.

Sand Casting Sand Cast Iron Railway Coupler

Name: Sand Casting Sand Cast Iron Railway Coupler
Brand: Qingdao Donrex Co., Ltd.
SKU: 721277792

Shandong, ChinaQingdao Donrex Co., Ltd.

US$1.50-10.00

100 KG

Product profile

Customization

Available

Type

Clay Wet Sand

Casting Method

Thermal Gravity Casting

Model NO.

OEM

Sand Core Type

Resin Sand Core

Application

Hardware

Machining

CNC Machining

Material

Steel

Surface Treatment

Sand Blast

Surface Roughness

Ra25

Standard

ASTM

Certification

ISO 9001:2008, Ts16949

Transport Package

Bubble Bag, Carton, Pallets or Wooden Box

Specification

OEM

Trademark

OEM

Origin

China

HS Code

73269090

Production Capacity

12000 Ton Per Year

Key features

Wide Weight Range: Covers 0.05kg to 20 tons across green, resin, and water glass sand casting methods.

Material Versatility: Supports grey iron, ductile iron, carbon/alloy/stainless steel, aluminum, and copper alloys.

Flexible Customization: Offers full customization from designs or samples, including minor and flexible adjustments.

Advanced Machining: Integrates CNC machining, heat treatment, and surface treatments like sand blasting.

Quality Assurance: ISO 9001:2008 and TS16949 certified with 100% visual and function inspection.

Fast Lead Time: Normal lead time is 1 to 6 weeks for fully-machined components.

Expert Manufacturing: 20 years of experience with global export and specialized in machined castings.

Cost-Effective Solution: Low-cost mold materials and efficient processes reduce purchasing requirements.

Company profile

Full CustomizationR&D CapabilitiesODM ServicesManagement Certification

Qingdao Donrex Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 18 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤9.86h

AI-Powered supplier vetting

SummaryThe supplier offers broad customization, exports approximately 90% of sales, has exported for 18 years, and reports standardized finished-product inspection instructions. It holds CE and ISO9001:2015 certifications and has seven R&D engineers, but launched no new products last year and is explicitly not classified as a professional technical supplier or a provider of 3D software design. The supplier lacks stated inventory, overseas warehouse, overseas showroom, overseas agents or branches, and offline trade-show participation. Manufacturing capacity is constrained by the absence of a valid contract with related subcontractors. Customer evidence is limited: there is no cooperation with Fortune 500 companies, while repeat-buyer preference is reported at 50%–80%. Financial credibility cannot be assessed because no relevant financial information is provided.

CertificationsThe supplier reports CE product compliance certification and an ISO9001:2015 management-system certificate. These are explicit certifications supporting compliance and quality-management capability.

After-Sales capabilityThe supplier reports no overseas warehouse, overseas showroom, overseas agents or branches, and no overseas service countries. It does provide several quotation and payment options, but the stated international service infrastructure is limited.

R&D capabilityThe supplier has seven R&D engineers and offers multiple forms of customization, but it is not a professional technical supplier, does not provide 3D software design services, and launched no new products in the past year. The evidence shows customization capacity but weak recent product-innovation evidence.

Production capacityThe supplier has written and uniformly followed finished-product inspection instructions, reports one-month average lead times in both peak and off-season periods, and identifies 40 qualified suppliers for service capability. However, it has no inventory capability and no valid manufacturing-capacity contract with related subcontractors, creating an explicit production-structure deficiency.

Customization capabilityThe supplier explicitly provides customization from designs, customization from samples, full customization, minor customization, and flexible customization. This is direct evidence of a broad range of customization services.