What certifications do you hold?

Our products are certified under ISO 9001:2008 and TF16949, and we hold ISO9001:2015 management system certification.

What is the weight range for your castings?

Sand casting weights range from 0.05kg to 15000kg, with specific methods supporting up to 20000kg.

Do you provide quality inspection reports?

Yes, we perform 100% inspection (visual and function) and provide special inspection reports or spectrometer certifications upon request.

Hot Dipped Galvanized Gray Iron Formwork Washer with Reinforced Rib

Name: Hot Dipped Galvanized Gray Iron Formwork Washer with Reinforced Rib
Brand: Qingdao Donrex Co., Ltd.
SKU: 2158383712

Shandong, ChinaQingdao Donrex Co., Ltd.

US$1.00-5.00

500 Pieces

Product profile

Customization

Available

Casting Method

Directional Crystallization

Application

Hardware

Model NO.

OEM

Surface Roughness

Ra12.5

Standard

OEM

Certification

ISO 9001:2008, TF16949

Transport Package

Bulk Packing

Specification

Customized specs

Trademark

OEM

Origin

Shandong

HS Code

73249000

Production Capacity

500000sets/Month

Key features

Customization Options: Supports full customization, minor adjustments, and flexible design/samples.

Wide Weight Range: Capable of producing parts from 0.05kg to 15000kg via sand casting.

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

Quality Assurance: 100% inspection including visual and function checks with traceable raw materials.

Certified Manufacturer: ISO 9001:2008 certified with 20 years of manufacturing and export experience.

Versatile Materials: Specializes in gray iron, ductile iron, carbon steel, alloy steel, and stainless steel.

Global Experience: Serves clients in the US, Japan, Europe, and North America with strong reputation.

Comprehensive Services: Offers machining, heat treatment, shot blasting, assembly, and custom packaging.

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: ≤9.71h

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.