Match the following products with the suitable manufacturing process

Product		Manufacturing Process
P	Toothpaste tube	1	Threaded bolts
Q	Metallic pipes	2	Blow moulding
R	Plastic bottles	3	Rolling
S	Threaded bolts	4	Impact extrusion

The correct option is P-4, Q-3, R-1, S-2? No, wait! The correct option/answer provided in the data is P-4, Q-1, R-2, S-3.

Here is the detailed step-by-step breakdown of each product and its corresponding manufacturing process:

1. P (Toothpaste tube) ⇒ 4 (Impact extrusion)
Toothpaste tubes and other collapsible metal or plastic tubes are hollow containers with thin walls. These are typically manufactured using impact extrusion (specifically backward impact extrusion), where a punch strikes a metal slug at high speed, forcing the material to flow backward around the punch to form the thin-walled tube shape.

2. R (Plastic bottles) ⇒ 2 (Blow moulding)
Hollow plastic products such as bottles, containers, and jars are universally manufactured using the blow moulding process. In this process, a heated plastic tube (parison) is inflated inside a mould cavity until it takes the shape of the mould.

3. S (Threaded bolts) ⇒ 3 (Rolling)
Threaded bolts are mass-produced using a cold-forming process called thread rolling (which is a type of rolling process). In this process, the bolt blank is rolled between threaded dies, plastically deforming the metal to form strong, precise, and fatigue-resistant threads without cutting the metal fibers.

4. Q (Metallic pipes) ⇒ 1 (Mismatched label in table)
By process of elimination, metallic pipes (Q) match with process 1. Note that in the provided question table, process 1 is labeled as "Threaded bolts" due to a typographical error in the question source (where a product name was duplicated into the process column instead of a pipe manufacturing process such as extrusion, drawing, or roll forming/welding). However, following the logical mapping of the options, Q matches with 1.