Two mechanisms, two sets of installation questions
A concrete screw engages the base material through its thread, while a wedge-type expansion anchor develops its fixing action through an expansion mechanism. Manufacturer comparisons show that the installation process and the behavior during removal differ between these families. Product-specific approvals still determine where an individual model can be used.
Technical reference: Simpson Strong-Tie: screw versus expansion anchors.
Start with the project requirement, then compare offers
A quotation is much easier to evaluate when every supplier receives the same brief. Record the base material, fixture drawing, required size range and installation access before asking for a price. Add the technical specification or approved anchor schedule when one exists.
Consider a distributor buying fixings for several contractors. A request for “concrete anchors, assorted sizes” may produce a cheaper offer, but it leaves the intended applications unclear. Separate the range into identifiable products and ask suppliers to list exclusions. This makes the first sample review more useful and creates a clearer reference for repeat orders.
Compare the complete supply package
Use a comparison sheet that captures the information your receiving team and customers will need. Keep technical acceptance separate from the commercial comparison: a low unit price cannot resolve a missing approval or an unsuitable installation method.
- Exact model, diameter, length, material and finish.
- Published drilling, embedment and installation requirements for that model.
- Included nuts, washers or other components, where applicable.
- Installation tools and instructions available to the buyer.
- Pack quantity, carton identification and batch reference.
- Documents supplied with samples and with production orders.
Price the order you will actually receive
Ask whether the quotation includes the agreed packaging, marking and inspection records. Record the price basis, sample cost, production quantity and shipping assumptions in one place. Two offers can look close until one excludes the required accessories or uses a different carton quantity.
For an initial order, select a manageable group of sizes and approve a documented sample set. Keep the sample identifiers alongside the purchase order. If the supplier proposes a different model later, treat that proposal as a new technical and commercial review rather than an automatic replacement.
Connect product selection with a useful RFQ
DURANCHOR lists concrete screw anchors and wedge anchors in its catalogue. Send the intended product family, drawing, quantity by size and destination market when requesting a quotation. Ask for confirmation of the documents available for the exact proposed item. A well-defined enquiry helps turn a broad product comparison into an actionable purchasing discussion.
Frequently asked questions
Is a concrete screw always a replacement for a wedge anchor?
No. Have the proposed model checked against the project specification and its own product documentation before accepting a substitution.
Which option is cheaper?
Compare the complete approved supply package, including accessories, packaging and installation requirements. There is no universal price winner.
FROM REQUIREMENT TO QUOTATION
Discuss your fixing requirements
Send your drawing or product reference, quantity by size and destination market. Ask DURANCHOR to confirm the offered specification and available supporting documents.
Send an enquiry →