Difference Between SCH 40S and SCH 40

[Dhilon]

I am about to purchase ASTM A53 MS Pipe. The manufacturers of different parts of the world asking me various question, which confusing me.

What is the Difference Between SCH 40S and SCH 40?

 

[LittleInch]

Sch 40S is a stainless steel designation.

In smaller sizes the wall thickness is the same between e.g.40 / 40S, but schedule 10 and 5 are not normally made for carbon steel pipe, but are for stainless.

Stainless steel pipes sizes by schedule and other "standard" wall thicknesses are listed in ASME B 36.19, carbon steel pipes in ASM B 36.10M

So the wall thickness might vary depending on the size.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[weldstan]

A-53 pipe should only be purchased to sch 40, sch 20, std, sch 80, etc. not to the stainless designations.