Commercial sliding door hardware should, needless to say be more substantial and durable than hardware for residential homes. Of course, if a piece of hardware is really well made, then the line between what's commercial and what's residential definitely gets a bit blurred. Also considering how it's becoming more and more popular to have heavy duty hardware in regular homes, and why not for most parts? They are certainly stronger, won't break as easily, and these pieces just feel very substantial.
Below you can see two different types of sliding door hardware from Home Depot which indeed seem pretty sturdy and well made, and might very well be suitable in commercial environments. And when it comes to sliding doors, which definitely seem to be even more susceptible to damage, you do want to make sure you get sturdy stuff. At your local door and window store, or your local hardware store or home improvement store, you should indeed be able to find quite a wide selection of different handles, locks, knobs, hinges, closers etc... And if they don't carry commercial style hardware in stock, then you often can have them order it especially for you. The first thing to do however before going out looking for the right hardware is to take a careful look at your door and see what exactly it is you need. Take measurements, write down the brand if visible, and take it from there when you go visiting these stores. Of course online has many more options, so if you're set of a specific style, then you probably will have an easier time finding it there. However sometimes you just need more hands on information, and then it can be much more useful to visit a local store where there is a friendly and knowledgable staff.
Prime-Line Products Black Painted Aluminum Sliding Glass Door Handle Pull Set
"Standard handle set for mortise locks. Extruded aluminum inside pull, black outside pull. Designed to be used with any mortise latch unit. Non-handled; surface mounted; 3-15/16 In. hole centers. Standard handle set for mortise locks. Black outside pull and inside pull with activator lever for mortise latch. Designed to be used with any of the following latching units: E-2008 E-2009 E-2014 E-2079 or E-2111"
Prime-Line Products Universal Sliding Glass Door Internal Lock Kit
"Designed to fit 90% of all internally latched doors. Reversible right or left hand openings. Complete with keeper; automatic unlatching option prevents accidental lockout. For 1 In. thick doors rails. Used on Viking doors. Comes in an Aluminum Finish."
These products can be found at homedepot.com