What certifications do your products hold?

Our products are certified with ISO, GS, RoHS, and CE standards to ensure quality and compliance.

What are the payment terms?

We accept LC (Letter of Credit) and T/T (Telegraphic Transfer) as terms of payment.

What is the salt spray test result for corrosion resistance?

The salt spray test duration is 48 hours, ensuring adequate corrosion resistance for various environments.

Drywall Screw Black Phosphoric for Drywall Color Zinc Coated

Name: Drywall Screw Black Phosphoric for Drywall Color Zinc Coated
Brand: QINGDAO ZONGYU INDUSTRY AND TRADE CO., LTD.
SKU: 2034303402

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

US$800.00-1,000.00

3 Tons

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Shape of Head

Round

Model NO.

Drywall screw

Surface Finishing

Zinc Plated

Certification

ISO, GS, RoHS, CE

Customized

Thread

Fine or Coarse Thread

Transport Package

Bulk in Carton or Box

Specification

Dia. 3-5mm

Trademark

Origin

China

HS Code

7318140000

Production Capacity

1000ton/Month

Key features

Customizable Thread: Offers fine or coarse thread options to suit specific installation needs.

High Hardness Material: Made from hardened carbon steel C1022A with surface hardness of 560-653HV.

Corrosion Resistance: Available with black phosphated, zinc plated, or galvanized surface treatments.

Versatile Applications: Ideal for fixing plasterboard to iron sheets (max 0.9mm) or wooden structures.

Certified Quality: Products hold ISO, GS, RoHS, and CE certifications for global compliance.

Factory Direct Supply: Direct from manufacturer with over 10 years of specialized production experience.

OEM/ODM Support: Supports customization from designs and samples with professional R&D team.

Wide Size Range: Available in lengths from 13mm to 200mm and diameters from 3.5mm to 4.8mm.

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: ≤3.73h

AI-Powered supplier vetting

SummaryThe supplier, Qingdao Zongyu, has a comprehensive business scope including sales of various products and import/export activities. They have been operating for over 20 years and are ISO certified. Despite not having overseas warehouses or agents, they have participated in international trade shows such as the Canton Fair. Their production capability is robust, with significant output across multiple nail types. However, their after-sales service procedures lack documentation, and their financial capacity and overseas service capabilities remain unclear.

Supplier typeThe supplier is involved in sales of mechanical equipment, metal products, automotive parts, and import/export activities. They have joined the Sino-African Chamber of Commerce and have been in operation for over 20 years.

CertificationsThe supplier holds ISO 9001, 14001, and 18001 certifications, indicating compliance with international quality, environmental, and occupational health standards.

After-Sales capabilityThe supplier has procedures to handle customer complaints but lacks written documentation for corrective actions and service capability assessments.

R&D capabilityThe supplier has OEM capabilities, has won one internationally recognized design award, and offers SDK for R&D, indicating some level of innovation.

Production capacityThe supplier operates 8 production lines with an annual output between US$10 Million - US$50 Million, indicating strong production capability.

Customization capabilityThe supplier offers OEM services for popular brands, demonstrating customization capabilities.

Client casesThe supplier has established business relations in Europe, America, Southeast Asia, and Africa, suggesting a broad customer base.

Product Q&A

Q:What are the available thread types for these drywall screws?

We provide both fine thread and coarse thread options. Fine threads are suitable for connecting gypsum board to metal keels with a thickness of no more than 0.9mm, while coarse threads are designed for connections with wooden keels.

Q:What materials and surface treatments are used?

The screws are made from hardened carbon steel C1022A. Surface treatments include black phosphated, grey phosphated, galvanized, HDG, zinc, yellow zinc, and painted finishes.

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

The minimum order quantity is 1 ton.

Q:Can you provide OEM or ODM services?

Yes, we offer both OEM and ODM services. We support customization from client designs and samples, backed by our professional R&D engineers.

Q:What is the typical lead time for production?

The average lead time is one month, regardless of whether it is peak season or off-season.