Do you support OEM or ODM services?

Yes, we provide both OEM and ODM services, including customization from designs and samples.

What is the warranty or quality assurance?

Our factory was audited by SGS in 2016, and we conduct random visual inspections on finished products to ensure quality.

What are the main applications for these nails?

They are widely used for roofing, woodworking, furniture repairing, cabinet making, and fastening sheet metal to wood.

4.0mm*2.5" Galvanized Roofing Twisted Screw Nail with Washer

Name: 4.0mm*2.5" Galvanized Roofing Twisted Screw Nail with Washer
Brand: QINGDAO ZONGYU INDUSTRY AND TRADE CO., LTD.
SKU: 707976042

Shandong, ChinaQINGDAO ZONGYU INDUSTRY AND TRADE CO., LTD.

US$500.00

2 Tons

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Material

Iron

Raw Material

195#,235#Iron Wire Rod or According Request

Model NO.

4.0mm*2.5"

Type

Umbrella Head Roofing Nail

Shank

Smooth , Twist

Length

1/2"-14"

Finish

Galvanized/Hot Dipped/Colorful Plating/Red/Blue

Transport Package

Bulk Packing, Color Box + Carton + Pallet

Specification

SGS

Trademark

Origin

China

HS Code

73170000

Production Capacity

1000ton/Month

Key features

Customizable Material: Raw material can be 195#, 235# Iron Wire Rod or according to request.

Multiple Finish Options: Available in Galvanized, Hot Dipped, Colorful Plating, Red, or Blue.

Wide Size Range: Lengths from 1/2' to 14' with various diameters from 2.5mm to 3.1mm.

OEM/ODM Service: Supports customization from designs and samples for specific needs.

SGS Audited Factory: Factory audited by SGS in 2016, ensuring quality and reliability.

High Production Capacity: Annual productivity exceeds 10,000 tons with 8 production lines.

Versatile Application: Ideal for roofing, woodworking, furniture repair, and sheet metal fastening.

Competitive Pricing: Offers high-quality parts with competitive pricing and fast delivery.

Company profile

Importers and ExportersHigh Repeat Buyers ChoicePatents AwardedNational Award received

QINGDAO ZONGYU INDUSTRY AND TRADE 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 CertifiedExport Year: 5 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤3.77h

AI-Powered supplier vetting

SummaryThe supplier is a Qingdao-based manufacturer and trading company with a broad registered business scope covering mechanical equipment, metal products, automotive parts, plastic products, building materials, and import/export activities. It reports ISO 9001, 14001, and 18001 certification history, eight production lines, 50 quality-control staff, and stated production capacity for several nail categories. The supplier offers customization from designs and samples, ODM, and OEM services for well-known brands. However, it reported no new products in the past year, lacks overseas warehouses, showrooms, agents, or branches, and has weak documented service-management controls: no written service-assessment or corrective-action procedures and no complaint-handling records. Financial information is identified for 2021–2023, but the slices do not provide performance values, so financial credibility cannot be fully assessed.

Supplier typeThe supplier operates as a manufacturer and trading company: its registered scope includes sales and import/export activities, while its factory information reports eight production lines and product-specific output. Its company description also states more than 20 years of development and business relationships across Europe, America, Southeast Asia, and Africa.

CertificationsThe supplier states that it passed ISO 9001, ISO 14001, and ISO 18001 international management-system certifications in 2001. This is explicit certification evidence, although the slice does not provide current certificate validity or renewal details.

After-Sales capabilityThe supplier has a complaint-handling procedure but no written complaint records, and it lacks written procedures or records for service-capability assessment and corrective/preventive actions. It has participated in the Canton Fair but reports no overseas warehouses, showrooms, agents, or branches, limiting evidence of structured overseas after-sales support.

R&D capabilityThe supplier reports ODM capability, an available SDK, and one internationally recognized design award. However, it also states that no new products were developed in the past year; this indicates some design and development resources but limited recent product-innovation evidence.

Production capacityThe supplier reports eight production lines, 50 quality-control staff, and stated annual outputs of 10,000 tons each for U-type, roofing, twisted, clout, and common nails. It also reports a one-month average lead time in both peak and off-season, supporting evidence of established production capacity, though the stated output figures are supplier-reported and not independently verified.

Customization capabilityThe supplier explicitly provides customization from customer designs and samples, ODM services, and OEM services for well-known brands. These statements directly demonstrate multiple forms of customization and contract-manufacturing capability.