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: ≤3.71h

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.

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.