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Product profile
Customization
AvailableMaterial
Carbon Steel,EPDMType
Round HeadModel NO.
WashersConnection
Common BoltHead Style
RoundGrade
100hvApplication
Machinery, BuildingFinish
GalvanizedCertification
ISO9001MOQ
1000PCSDelivery Time
10 DaysSample
FreeTransport Package
25kg/Carton+PalletSpecification
M6-M12, 5/16"-1/2"Trademark
FASTOrigin
Ningbo, ZhejiangHS Code
7318151001Production Capacity
2500tons/MonthKey features
EPDM Seal Washer: Special flange bolt assemble with EPDM washer for silo building sealing.
Galvanized Finish: Zinc plated surface treatment for enhanced corrosion resistance.
Multi-Size Range: Available in sizes M6-M12 and 5/16'-1/2' to meet various needs.
ISO9001 Certified: Manufacturing process certified by ISO9001 for quality assurance.
Fast Delivery: Standard delivery time is 10 days for efficient project completion.
Free Samples: Free sample availability for quality verification before bulk order.
Round Head Style: Round head type with common bolt connection for standard use.
100HV Grade: High hardness grade 100HV ensures durability and strength.
Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedNearest Port: Ningbo Port, Shanghai portAverage Response Time: ≤7.10h 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 is the minimum order quantity?
A:
The MOQ is 1000 PCS for this product.
Q:What is the delivery time?
A:
The standard delivery time is 10 days.
Q:Are samples available?
A:
Yes, free samples are available for quality check.
Q:What certifications do you have?
A:
We have ISO9001 certification for our manufacturing process.
Q:What is the material of the washer?
A:
The washer is made of Carbon Steel with EPDM seal.
Send Inquiry
*To:
Ningbo Zhonglian Fastener Manufacture Co., Ltd.
Ningbo Zhonglian Fastener Manufacture Co., Ltd.*Content:
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