Are you a manufacturer or trading company?

Sinofastener is a fastener manufacturer in Ningbo, China, with many years of experience in bolts, nuts, and OEM/ODM services.

Do you provide OEM/ODM service for fasteners?

Yes, we accept OEM/ODM services, including custom screws, bolts, and special nuts based on drawings and samples.

How is your price for screws, bolts and nuts?

We offer high-quality fasteners at reasonable, factory-direct prices with competitive cost performance and quick quotations.

Hot DIP Galvanized Full Threaded Double Head Bolts for Power Grid Construction

Name: Hot DIP Galvanized Full Threaded Double Head Bolts for Power Grid Construction
Brand: Ningbo Zhonglian Fastener Manufacture Co., Ltd.
SKU: 2284560985

Zhejiang, ChinaNingbo Zhonglian Fastener Manufacture Co., Ltd.

US$0.01

1,000-999,999 Pieces

US$0.001

1,000,000+ Pieces

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Round Head

Model NO.

Double Arm Bolt

Connection

Common Bolt

Head Style

Round

Standard

DIN, ANSI

Grade

8.8

Application

Machinery, Chemical Industry, Environmental

Finish

Hot Galvanizing

MOQ

1000PCS

Delivery Time

25 Days

Durability

Enhanced

Sample

Free

Transport Package

25kg/Carton+Pallet

Specification

M5-40

Trademark

FAST

Origin

Ningbo, Zhejiang

HS Code

7318159001

Production Capacity

2500 Tons/Month

Key features

Hot-Dip Galvanized Coating: Provides exceptional corrosion resistance and long service life for outdoor power grid structures.

Full Thread with Tapered Point: Ensures easy alignment during installation and secure connection for double-arm pole structures.

Complete Hardware Set: Each set includes four dedicated square nuts for reliable locking on steel hardware.

High-Strength Carbon Steel: Manufactured from 45#/Q235 carbon steel to provide essential strength and stability.

Custom Shank Length: Shank length is customized per crossarm assembly thickness, ranging from 12' to 36'.

ISO 9001:2015 Certified: Quality assured through strict QC inspection and mill certificates at every production step.

OEM/ODM Service: Supports custom screws, bolts, and special nuts based on drawings and samples.

35+ Years Experience: Trusted supplier with over 35 years of industry experience and customers in 80+ countries.

Company profile

Ningbo Zhonglian Fastener Manufacture Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedNearest Port: Ningbo Port, Shanghai portAverage Response Time: ≤6.76h CertifiedTerms of Payment: LC, T/T, D/P CertifiedInternational Commercial Terms(Incoterms): FOB, CIF, CFR

AI-Powered supplier vetting

SummaryNingbo Zhonglian Fastener Manufacture Co., Ltd. is identified as a Chinese limited company operating in Zhejiang and producing construction fasteners, including bolts, nuts, screws, washers, and non-standard fasteners. The supplied information shows ISO9001:2015 certification and also references ISO14001, ISOEN14399CE, and ISOEN15048 approvals. Reported manufacturing resources include automatic cold-forging equipment, hot-forging lines, heat-treatment lines, and an inspection center. The company states that it serves international markets and maintains overseas service institutions, but the evidence does not fully establish current service performance. Production information is inconsistent across the slices regarding establishment date, employee count, plant area, and capacity, so scale should be verified. Customization capability is not explicitly demonstrated. Trade records identify buyers in the United Kingdom and Vietnam, but the number of documented transactions is limited.

Supplier typeThe supplier is classified as a combined business entity and limited company in China, with a stated manufacturing address in Zhejiang. Its products, manufacturing equipment, and description identify it as a fastener manufacturer rather than only a trading intermediary.

CertificationsThe supplier explicitly provides an ISO9001:2015 certificate. Its company description also references ISO9001, ISO14001, ISOEN14399CE, and ISOEN15048 approvals, indicating multiple quality, environmental, and product-related certifications or approvals.

After-Sales capabilityThe supplier states that it provides considerate service and has six domestic direct-sale offices plus overseas regional service institutions in Hungary, Dubai, Malaysia, and the UK. These statements support a service network, although no specific after-sales procedures, response standards, or performance evidence are provided.

Production capacityThe supplier reports nearly 100 automatic cold-forging machines, six hot-forging lines, four imported automatic mesh-belt heat-treatment lines, a professional inspection center, and monthly capacity of up to 2,500 tons. It also lists a broad range of fastener products and international standards, providing explicit evidence of substantial manufacturing capability.

Client casesTrade records associate the supplier with CYNTECH ANCHORS LTD in the UK and CÔNG TY TNHH CST INDUSTRIES VIỆT NAM in Vietnam, covering hex screws, hex nuts, and stainless-steel flat washers. These records demonstrate identifiable international buyer activity, but only a small number of transactions are shown.

Product Q&A

Q:What are your main products?

We are a China fastener manufacturer offering bolts, screws, threaded rods, nuts, washers, anchors, rivets, stamping parts, machined parts, and hardware in carbon steel and stainless steel.

Q:How do you ensure quality in every process?

We perform QC inspection at every production step, provide MTC and mill certificates, and maintain strict quality control under ISO 9001:2015 certification.

Q:What is your delivery time for fasteners?

The standard delivery time is 30-45 days, which is flexible according to order quantity. Shipment is from Ningbo port.

Q:What are your payment terms?

We accept 30% T/T in advance and 70% balance against B/L copy. For small orders under 1000 USD, 100% payment in advance is required.

Q:Can you provide samples of bolts and nuts?

We provide free samples for standard fasteners. New customers are required to pay the express cost.