Why the confusion happens
Both families are made of twisted steel wires, both appear as coils, and both are described with words like strand, rope, and wire, so a buyer who knows the job but not the family name can easily pick the wrong word. A search for one family often returns pages about the other, and a supplier catalogue that lists both can blur the boundary further. This guide exists to sharpen that boundary by use, so a buyer can check the family name before writing the inquiry, rather than discovering the mistake in the reply.
The confusion costs time in both directions. A strand inquiry written with rope words may receive a rope reply, and a rope need described with strand words may receive a strand reply, and each wrong round costs days. A minute spent on this guide, checking the job against the two families, usually saves at least one round, and sometimes saves an order placed for the wrong family altogether.
Prestressed strand, by use
Prestressed strand on this site is presented for prestressing uses in construction and geotechnical works, with application areas including bridges, railways, highways, subways, tunnels, airports, power stations, buildings, and geotechnical works. The 1x7 series table gives the strand discussion a concrete reference, with diameters and grades named from the MIC product page. A buyer whose job is prestressing, anchoring a structure, or reinforcing a concrete or geotechnical element is usually in strand territory, and the strand selection guide is the next page to read.
Strand inquiries should name the series, the diameter and grade where the table applies, the application area, and any standard the project cites. Those four facts, together with the commercial points, form the strand brief, and the strand inquiry checklist gathers them into a form. A strand brief that omits the application area is the most common weak brief, because the same strand name can serve very different structures.
Wire rope, by use, in general terms
Wire rope in general serves lifting, hoisting, rigging, suspension, and traction uses, where a rope runs over sheaves, wraps on a drum, or carries a suspended load. Those uses differ from prestressing uses in the way the rope is loaded, handled, and terminated, and a rope discussion therefore turns on different questions: the duty pattern, the bending, the termination, and the handling, each in general terms. This site does not list wire rope products, and it does not give rope figures, because rope is not in the company's listed lines.
A buyer whose job is lifting or rigging should not force that job into a strand inquiry, even if the words sound similar. The right move is to describe the job plainly in the inquiry and ask whether the company's lines cover it, rather than naming a strand product and hoping it fits a rope job. If the job is genuinely a rope job, the company reply will say so, and the buyer can then seek a rope supplier with a correct brief, instead of discovering the mismatch after an order.
Checking the family name before writing
Three questions usually settle the family: what is the job, prestressing or lifting; what is the element, a tendon in a structure or a rope over a sheave; and what does the project cite, a prestressing standard or a lifting requirement. A buyer who can answer those three questions can name the family with confidence, and a buyer who cannot answer them should describe the job in the inquiry and ask, rather than guessing the family name. Guessing the family name is the one mistake this guide most wants to prevent.
Please confirm the minimum order quantity, the lead time, and the payment terms in your inquiry before you place an order. That commercial reminder applies to whichever family the inquiry concerns, because the commercial points are not stated on this site for any line. Asking them together with the job description, in the first message, lets the company reply with terms that match the actual job in question.