I could have explained it better, because of their shorter length, a pipe unless attached to something else cannot reach the same distance as a wooden pole for example. Generally steel pipe (assuming all the pipes in-game are steel ones, not PVC) is better suited as a clubing weapon.
According to the wiki, a pointy stick (the most basic spear) is actually heavier than a pipe (900gr vs 762gr), so not only the stick is longer but it also can apply more force due to its weight. The pipe is made from steel (7.75 to 8.05 g/cm3), let’s take the average density (7.9 g/cm3). 762/7.9= 96cm3. Because we can get those pipe from a locker, I’m assuming that they have radius of about 2cm, so height = 96/(pi.r^2)= 8cm (again i’m assuming here that the pipes are super-hollow so they can have the longest possible length), too short to be a spear.
It’s very possible that my calculations are wrong or the game numbers were unrealistic, but from these numbers I get the feeling that those pipes are more similar to a “short steel piece” than a “plumbing pipe” we often see gangs in video game using.
Edit: It seems that for gameplay purposes, an item can have different weight and length depend on what recipe it’s a component in, in that case then a pipe perhaps can find its way to recipes such as “spear” and “javelin”, still given the number above it’s still a long stretch.
Edit2: weird, a heavy stick is heavier (1.7kg) yet give lower bash damage than a pipe, this exists across multiple items too. I know it’s gameplay purposes but IMHO the weight/bash damage could be a little more realistic.