Pipe schedule and Class

[santoshdada]

What is the diffrence between pipe Class and Pipe schedule please don't confused with Pipe grade Like Pipe ASTM 106 Gr B
in indian indusrties what i found professional are using Schedule in SS piping while in CS(Carbon Steel) thay are using Class viz Class A,Class B and Class C, what is this class A,B,C is this ANSI code or only used in India

 

[XL83NL]

Schedule indicates wall thickness as per (e.g.) ASME B36.10 or ASME B36.19. Class indicates the pressure temperature rating as per e.g. ASME B16.5.
From your somewhat misspelled post, I believe Class A, B and/or C may also indicates a grade in piping material, as ASTM A106 is available in three different grades (A, B and C).
For proper info on the right designation for material grades, refer to the applicable ASTM spec, in your case, ASTM A106.
Now, wall thickness in CS vs SS is normally indicates as (taking STD as example) Sch 40 or STD, vs Sch 40S. The -S indicates wall thickness acc the stainless steel spec ASME B36.19.
I believe this is an answer to your question, however Im not sure (your post is too vague).

 

[santoshdada]

Thanks XL83NL for your response,here what i have seen professional are purchasing MS(Mild steel) pipe based on Class only not schedule, based on class only they are getting desired pipe
plz see the link

http://www.amitpipetube.com/specifi1.html

where Class A/ClassB/C given

 

[XL83NL]

Yeah okay but that pipe conforms to a different spec I mentioned, let alone usually applied for industry piping.
I sthat spec for water/sewgae pipingm, specifically only for the Indian market?
I however dont know that specific spec, but it seems to be a way of calling out wall thicknesses by means of a certain specification. It probably wont be a common spec though.

 

[jijoygopal]

Normally for PVC pipes also Classes are specified instead of Schedule. However general practice for CS ans SS pipes is to follow Schedule as per B36.10 and B36.19

 

[santoshdada]

can any one have any idea why we follow Class instead of Schedule in PVC and CS pipe