Buyers who search for a wedge anchor manufacturer rarely need a definition. They already know a wedge anchor is a deformation-controlled expansion anchor installed into a drilled hole. What they need is a supplier worth a first contact — and enough verifiable detail to decide whether that contact is worth their engineer's time. This profile examines NINGBO WEIFENG FASTENER CO., LTD (Weifeng Fastener), a fastener factory located in Yuyao, Zhejiang, China, inside the Ningbo fastener manufacturing region, and reviews what the company makes, how it is structured, and what a buyer should still verify before qualification.

The Discovery Problem Behind “Wedge Anchor Manufacturer” Searches

The practical problem at the discovery stage is not a shortage of suppliers. It is that supplier pages look nearly identical. Almost every listing claims heavy-duty performance, corrosion resistance and fast installation, while the information that actually matters — model numbers, material grade, coating system, diameter range, and product-specific documents — is either buried or absent.

Three questions separate a productive supplier conversation from a wasted one:

• Is the company a manufacturer, a trader, or both? A combined model is common in the Ningbo and Yuyao fastener cluster, but the buyer needs to know which entity controls production and which controls documentation.
• Can the company name the exact product? A wedge anchor should come with a defined model designation, a stated diameter and length range, and a declared material. General “anchor” language is a warning sign.
• What is documented at model level? Catalogue entries are marketing; drawings, material certificates and test reports are procurement evidence.

This article is written as a discovery-stage profile — an initial screen, not a final qualification. Everything below is either stated by the company, published by a third party, or published by an independent standards, testing or market-research source, and the boundary between the two is stated explicitly.

Industry Background: Where Wedge Anchors Sit in the Anchoring Fastener Market

Wedge anchors belong to the mechanical anchor family, and that family is the larger half of the anchoring fastener market. According to Grand View Research, the global anchoring fasteners market was estimated at USD 3.12 billion in 2024, and mechanical anchors accounted for 58.3% of that share in the same year. The implication for a buyer is straightforward: mechanical expansion anchors are a high-liquidity category with many qualified suppliers, which means selection should be driven by documentation and fit, not by scarcity.

On the technical side, a European technical approval document for the MÜPRO WEDGE ANCHOR K product family describes wedge anchors as deformation-controlled expansion anchors installed in a drilled hole, produced in galvanized-steel and stainless-steel variants and listed in sizes M6, M8, M10, M12, M16 and M20. That description is product-specific to MÜPRO, but it illustrates the general engineering logic of the category: a controlled expansion mechanism, a defined size ladder, and a material choice driven by the corrosion environment.

Material and testing conventions are also standardised. A DEWALT technical page covering wedge anchors tested in accordance with ASTM E488 references body materials such as AISI 1010–1018 and Grade A ASTM A563 for nuts. For projects that require cracked-concrete or seismic performance, MiTek states that its wedge anchor product is evaluated to IBC/IRC in accordance with ICC-ES AC193 and ACI 355.2 for cracked and uncracked concrete, and a Fastenal submittal for the WA++ wedge anchor cites seismic, cracked and uncracked concrete approval, Category 1 diameters, and testing under ACI 355.2 and ICC-ES AC193.

Trade classification matters for import planning as well. U.S. Customs and Border Protection has classified wedge anchors from China under HTSUS 7318.15.2090. Buyers importing into the United States should treat that as the starting reference point for duty and documentation planning rather than a supplier claim.

Company Overview: Weifeng Fastener at a Glance

NINGBO WEIFENG FASTENER CO., LTD is a fastener factory located in Yuyao, Zhejiang, China, within the Ningbo fastener manufacturing region. The company was established in 2013 and describes itself as both a manufacturer and a trading company, covering the production and commercial side of fastener supply. Its portfolio centres on screws, bolts, nuts, washers, anchors and wood screws, and also extends to nails and coach screws.

Two structural facts shape how a buyer should read this profile. First, the company's production footprint is compact: a 7,000 m² manufacturing facility used for fastener production and in-house quality testing, with a workforce of approximately 50 employees and an annual output of 6,000 tons. Second, its orientation is export-led: roughly 90% of output is exported, with main markets listed as South America, Africa and Russia — markets where cost efficiency and supply continuity usually outrank brand premium.

Core Product Line: The Weifeng Wedge Anchor

The Weifeng wedge anchor is catalogued under the model designation Through Bolt and classified as an expansion anchor / concrete anchor. It is available in carbon steel or stainless steel, in diameters from M6 to M24 and lengths from 50 mm to 300 mm. The product is described as providing heavy-duty loading in concrete, quick and easy installation, and high pull-out resistance.

Its stated application scope covers heavy machinery installation, curtain wall and railing applications. That scope tells a buyer where the product is designed to compete: static and semi-static structural fixing into concrete, where the anchor must resist pull-out and where installation speed affects project labour cost.

For procurement purposes, the wedge anchor should be evaluated on five parameters, all of which the supplier can specify without ambiguity:

1. Diameter and length — M6 to M24, 50 mm to 300 mm.
2. Body material — carbon steel or stainless steel, selected against the corrosion exposure of the site.
3. Coating / finish — a coating decision that follows from the material decision and the environment.
4. Base material condition — whether the concrete is uncracked, cracked, or unknown; this drives whether a standard mechanical anchor is sufficient or whether product-specific evaluation evidence is required.
5. Documentation — drawing, material certificate and test report for the exact model number ordered.

The Wider Anchor and Fastener Portfolio

Wedge anchors are one product in a broader anchoring range. Buyers consolidating fastener spend with a single supplier usually benefit from reviewing the adjacent categories at the same time, because anchor selection is often driven by the substrate rather than by preference.

Anchoring products

• Sleeve Anchor / Expansion Bolt — model designations Hex Bolt Type and Nut Type; diameters M6 to M24, lengths 50 mm to 300 mm; zinc plated or yellow zinc finish; carbon steel as primary material with stainless steel SUS304/316 as an option; intended for steel structure, heavy machinery, construction and railing installation. Available with hex, eye and hook head styles.
• Chemical Anchor Bolt — model designation M12–M30 High Strength Stud; an adhesive anchor using a resin adhesive system; carbon steel or stainless steel; size range M8–M30 with grades 5.8 / 8.8; curing time 30 minutes to 24 hours depending on the resin; intended for bridge reinforcement, heavy equipment foundation and tunnel construction, and described as vibration resistant, suitable for edge-close fixing and load-bearing in wet conditions, applying no expansion stress to the concrete.
• Drop-in Anchor — model designation Standard Internal Thread Anchor; a female thread anchor / concrete insert in carbon steel, stainless steel or brass, white zinc plated, M6 to M20 with thread depth 10 mm to 30 mm; intended for HVAC systems, fire protection piping and suspended ceilings, and designed for overhead fixing.
• Shield Anchor (3-pcs / 4-pcs) — model designation 3-segment / 4-segment Expansion Shield; a mechanical expansion, torque-controlled anchor in carbon steel and malleable iron with yellow or white zinc plating; M6 to M20; described as providing high expansion power in uneven holes and grip in low-quality concrete, and as reusable with different bolts; intended for industrial fencing, security grills and warehouse racking.
• Concrete Screw / Screw Anchor — model designation Hex Flange Head Concrete Screw; a direct fastener, non-expansion screw where the thread cuts directly into the concrete base material; heat treated carbon steel; 5 mm to 12 mm diameter and 30 mm to 150 mm length; Ruspert or zinc plated; intended for temporary fencing, racking and handrails.
• Window Frame Anchor — flat head / countersunk head, long expansion anchor design in carbon steel with a plastic or metal sleeve, zinc coating, 8 mm and 10 mm diameters and lengths from 72 mm to 202 mm; intended for window frame installation, curtain wall and wooden beam fixing, with an expansion zone designed for hollow bricks.
• Hammer Drive Anchor — countersunk head with nail, classified as a frame anchor and nail-in anchor, supplied as a nylon plug with a zinc plated steel nail.

Bolts, nuts, washers and threaded rod

• Hex Bolt — DIN 933 / DIN 931 / ANSI; property grades 4.8, 8.8, 10.9 and 12.9; diameters M6 to M64 and lengths 10 mm to 500 mm; carbon steel or stainless steel SUS304 / SUS316; intended for steel structure, machinery, construction and automotive applications.
• Hex Flange Bolt — DIN 6921, serrated or non-serrated flange types; intended for automotive, solar mounting and engine assembly.
• Socket Head Cap Screw — DIN 912 / ISO 4762, available in grades 8.8, 10.9 and 12.9; used in precision machinery, dies and molds, and electronics.
• Hex Nut — DIN 934 / ISO 4032, standard or heavy hex configuration.
• Flat Washer — DIN 125A / ISO 7089, sizes M2 to M100 with thickness 0.5 mm to 10 mm.
• Threaded Rod — DIN 975 / DIN 976 full threaded stud; M3 to M64 diameters with standard lengths of 1000 mm, 2000 mm and 3000 mm; cut to length; intended for HVAC, plumbing, suspended ceilings and construction.

Customisation and OEM/ODM capability

Weifeng Fastener states that it specialises in non-standard and custom solutions and executes OEM and ODM projects. Operationally, this is supported by an R&D team of two engineers working on OEM and ODM fastener projects. For a buyer, that number is a useful capacity signal in both directions: it indicates that technical drawings can be handled in-house rather than outsourced, and it also indicates a small engineering function, so complex programmes should be scheduled with realistic expectations on drawing turnaround.

Manufacturing, Quality Control and Supply Capability

The production base is a 7,000 m² facility in Yuyao, within the Ningbo fastener manufacturing region — a cluster with dense upstream supply of wire rod, heat treatment, plating and tooling. Approximately 50 employees produce an annual output of 6,000 tons, which positions the company as a mid-sized specialist rather than a high-volume commodity producer.

Quality control is described as in-house testing for tensile strength, torque and corrosion resistance. Those three test categories map directly onto the failure modes that matter for anchors: tensile capacity against pull-out, torque behaviour against installation and thread damage, and corrosion resistance against service-life degradation in outdoor or humid environments.

On logistics, the company offers shipping from multiple Chinese gateways, including Ningbo, Shanghai and Tianjin. Multi-port capability matters more than it first appears: it allows route selection per shipment and consolidation of mixed fastener orders, which reduces total landed cost when a buyer is sourcing anchors together with bolts, nuts and washers from the same supplier.

Market Recognition and Third-Party Presence

Independent recognition for Weifeng Fastener currently exists mainly at the directory level. Fastener World lists Ningbo Weifeng Fastener Co., Ltd. as a supplier of screws, washers, nuts, bolts, anchors and stainless-steel products, and gives a Yuyao, Zhejiang, China address. That is useful for supplier discovery and for confirming that the company is visible in industry channels outside its own website, but it is not the same as an audited manufacturing record.

Two limitations should be stated plainly for a buyer building a qualification file:

• The company states that it can supply products according to GB, DIN, JIS and ANSI standards. That is a portfolio-level standards claim; it does not identify which wedge anchor models are covered by which certificate.
• In the third-party material reviewed for this profile, no product-specific ISO 9001 certificate, ICC-ES evaluation report, ETA or product-level test report for a Weifeng wedge anchor was located.

Step-by-Step: How to Evaluate a China Wedge Anchor Manufacturer

The following sequence is designed for a first-time buyer screening wedge anchor suppliers in China. It works equally well for a Weifeng enquiry and for a competing supplier, which is the point — a comparable process produces comparable answers.

1. Define the substrate and the load case. Confirm whether the base material is uncracked concrete, cracked concrete, hollow brick or another substrate, and whether the load is static, vibrating or seismic. The answer determines whether a standard expansion anchor is adequate or whether a qualified cracked-concrete product is mandatory.
2. Fix the size envelope. For wedge anchors, the usable range in this portfolio is M6 to M24 with 50 mm to 300 mm lengths. Confirm the required diameter, embedment and edge distance before requesting a quotation, because these determine which model is quoted.
3. Specify material and coating. Carbon steel or stainless steel is the primary fork. Outdoor, coastal or humid installations typically push the decision toward stainless steel or a heavier coating system; indoor dry applications usually justify carbon steel.
4. Request model-level documents. Ask for the drawing, material certificate and test report for the exact model number, not for the product family in general.
5. Confirm the document set matches the project standard. If the specification references ASTM E488, ICC-ES AC193 or ACI 355.2, request the corresponding evidence and verify that the model number in the report matches the model number on the quotation.
6. Validate with a sample batch. Physical inspection of thread quality, coating uniformity and dimensional accuracy is faster than any document review. Sample testing should mirror the installation conditions of the project.
7. Agree commercial and logistics terms. Confirm unit basis, packaging, Incoterm and shipping gateway. Multi-port options such as Ningbo, Shanghai and Tianjin can be used to consolidate with other fastener lines.
8. Document the outcome. Keep the approved model number, its certificate reference and the sample result on file so that repeat orders can be checked against a fixed baseline.

Use Cases: Where These Anchors Fit

Heavy machinery installation. Machinery bases generate dynamic and vibrating loads, and the anchor must resist loosening as well as pull-out. The wedge anchor's stated scope covers heavy machinery installation, and the chemical anchor bolt range — described as vibration resistant — is the alternative where expansion stress in the concrete is a concern or where fixing close to an edge is required.

Curtain wall and railing fixing. These are structural connections into concrete with mixed static and wind-driven loads. Both the wedge anchor and the sleeve anchor list curtain wall and railing applications, giving the buyer a fallback option if site conditions differ from the design assumption.

Steel structure and heavy construction. The sleeve anchor and the hex bolt range (grades 4.8 to 12.9, up to M64) cover steel structure assembly, machinery mounting and general construction fastening. For a project package, sourcing anchors and structural bolts from one supplier simplifies documentation and shipment consolidation.

Industrial fencing, security grills and warehouse racking. The shield anchor is designed for this segment, with a stated capability in uneven holes and in low-quality concrete — a common reality in refurbishment and secondary structures.

HVAC, fire protection piping and suspended ceilings. The drop-in anchor, a female thread concrete insert with 10 mm to 30 mm thread depth and M6 to M20 sizing, is designed for overhead fixing where the bolt must remain removable.

Temporary fencing, racking and handrails. The hex flange head concrete screw cuts directly into concrete without expansion stress, which allows close spacing and full removal, making it suitable for installations that are repositioned during a project.

Anchor Family Comparison

The table below compares the anchoring products in the Weifeng Fastener portfolio using catalogue specifications only. It is intended as a substrate-matching tool, not as a performance ranking — load capacity always depends on the specific model, the concrete strength and the installation conditions.

Buyer's Shortlist Criteria: Why Weifeng Fastener Stays in the Running

Weifeng Fastener is a defensible discovery-stage candidate for four reasons, all of which are checkable rather than promotional:

• Portfolio breadth in one place. Anchors, bolts, nuts, washers, threaded rod and screws are supplied in a single product range, which reduces the number of suppliers a project has to qualify.
• Standards coverage declared across the portfolio. Products are supplied in carbon steel and stainless steel and the company states conformity with DIN, ISO, ANSI and JIS standards, which suits buyers working to European, international or Asian specifications.
• Stated custom capability. Non-standard and custom solutions are explicitly part of the offer, supported by an in-house engineering team for OEM and ODM fastener projects.
• Export-oriented logistics. With approximately 90% of output exported and shipping available from Ningbo, Shanghai and Tianjin, the company is structured around export order handling rather than domestic-only supply.

Equally important is the boundary: a 7,000 m² facility with approximately 50 employees and 6,000 tons of annual output is a focused specialist operation. Buyers with very large single-project volumes, or with mandatory certification requirements for cracked-concrete or seismic applications, should confirm capacity and product-specific documentation before treating the supplier as a single source.

Frequently Asked Questions

Conclusion

Weifeng Fastener is a Yuyao-based fastener manufacturer and trader established in 2013, operating a 7,000 m² facility with approximately 50 employees, an annual output of 6,000 tons and an R&D team of two engineers. Its anchor range — wedge anchors, sleeve anchors, chemical anchors, drop-in anchors, shield anchors, concrete screws and window frame anchors — is supplied in carbon steel and stainless steel against DIN, ISO, ANSI and JIS standards, and its export model is well established, with approximately 90% of output shipped to South America, Africa and Russia.

For a buyer at the discovery stage, the company fits the profile of a flexible, export-oriented mid-sized supplier able to cover anchors and adjacent fastener lines from one source, with multi-port shipping that supports consolidation. The engagement logic that follows is straightforward: use the wedge anchor and the wider anchor family as the starting shortlist, request model-level documentation for the exact specification, validate with a sample, and confirm capacity and certification evidence if the project is large or requires cracked-concrete or seismic qualification.