What is the minimum order quantity?

The minimum order quantity is 1 ton.

What are the lead times for production?

The average lead time is one month, applicable for both peak season and off-season production.

What payment terms do you accept?

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

Carbon Steel Black Phosphating Drywall Screws Coarse Threads Fine Threads

Name: Carbon Steel Black Phosphating Drywall Screws Coarse Threads Fine Threads
Brand: QINGDAO ZONGYU INDUSTRY AND TRADE CO., LTD.
SKU: 2150788322

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.

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 Type: Available in Fine or Coarse Thread options to suit specific installation needs.

Carbon Steel Material: Constructed from high-quality Carbon Steel C1022A for superior strength and durability.

Versatile Surface Finishes: Offers Black Phosphated, Grey Phosphated, Galvanized, HDG, Zinc, Yellow Zinc, and Painted options.

Wide Size Range: Shank diameter 3-5mm and lengths from 13mm to 200mm to fit various applications.

Multiple Certifications: Certified by ISO, GS, RoHS, and CE standards ensuring global compliance.

High Salt Spray Resistance: Passes 48-hour salt spray test for enhanced corrosion protection.

Tailor-Made Service: Customization available based on client designs and samples with OEM/ODM support.

Professional Manufacturing: Factory established in 2012 with over 10 years of experience and SGS audit.

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: ≤2.84h

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 thread types are available for these drywall screws?

We offer both Fine Thread and Coarse Thread options. Fine threads are suitable for gypsum board to iron sheet connections (up to 0.9mm thickness), while coarse threads are designed for gypsum board to wooden keel connections.

Q:Can the screws be customized according to my requirements?

Yes, we provide tailor-made services. Customization is available based on client designs and samples, including thread type and surface finishing options.

Q:What is the material composition of these screws?

The screws are made from Carbon Steel C1022A, which provides high hardness and durability suitable for various construction applications.

Q:What certifications do your products hold?

Our products are certified by ISO, GS, RoHS, and CE, ensuring they meet international quality and safety standards.

Q:What are the available surface treatment options?

We provide multiple surface treatments including Black Phosphated, Grey Phosphated, Galvanized, HDG, Zinc, Yellow Zinc, and Painted finishes.