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Dear Material experts, I have a pipe spool of SS321 being used for 1" riser along the flare stack. I have short supply of material SS321, 1" pipe Please suggest if I can use SS347 pipe spool available with me. I need to weld the material as it has socket weld joints. As per my study, E-347-16...

Thank you LittleInch and BigInch for your helpful information. I wonder how I missed out on this clause.

Dear Friends, Here I am having a lines for which Design Pressure is 39 Kg/cm2g. The line needs to be complete dry, hence we are going for Pneumatic test. As per Code ASME31.3, the Pneumatic test pressure comes out to be 1.1 x 39 = 42.9 Kg/cm2g As I understand, such high pressure is not...

LittleInch, Thank you for the clarification

In general for process piping ASME B31.3 is used for calculation of Hydrotest pressure. Today I came across ASTM A530, which also specifies as "each length of pipe shall be tested by the manufacturer to a hydrostatic pressure which will produce in the pipe wall a stress not less that 60 % of the...

OK. Thanks Muktiadi

Where can I find advantages and disadvantages of extended stem valves? Is it a Good Engineering Practice to use extended stem valves?

Dears, In the current project I am working , I came across the term "Hot dip galvanizing". Is there any difference between galvanizing and hot dip galvanizing? Is HOT DIP galvanizing any special process?

I have following Item to be procured: " Flange - Plate, Carbon Steel Per Indian Standard IS 2062 Grade B, 10 Bar WorkingPressure, Per AWWA C207 Class D" However in the AWWA C207 standard Class D stands for 175-150 psi. It does not mention 10 Bar. Should I procure as 150 psi flange?

As per my knowledge, A182 being forged will be a good option. However I am not sure about F304L grade. Is it okay to Choose F304L over F304?

We have a 3/4" vent line from equipment of SS304 (300#) material as per P&ID. After the Isolation valve (3/4") there is a spec break shown. The next specification stands for SS316 (150#) material. I want to clarify a doubt here. Why did the process engineer chose SS316(150#) instead of...

For steam service, Can I use a spectacle blind of material ASTM A105 instead of ASTM A515 Gr.70? What is the criteria for evaluation of the possibility?

Can I use a spectacle blind of material ASTM A182 F304L instead of ASTM A240-304? What is the criteria for evaluation of the possibility?