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Dears, What is the maximum velocity flow through a HDPE pipe ? For CS pipe 20 m/s is the limit !

Thanks a lot , In my design i put a main line then coneecting by a tee,

Design Pressure = 90 bar Design Temp = 60 degree celcius Fluid = Natural Gas ( Fuel Gas ) Inside Storage we have maintain 60 degree Celsius, so there is a trace heating This is a storage Tank(capacity 261 m3). when the system shutdown from storage tank it will supply gas to Plant.

as per asme b31.1http://files.engineering.com/getfile.aspx?folder=15c2696e-e573-469a-b6cd-416027210d3e&file=HP_BUFFER_STORAGE_TANK.pdf

please find the attached drawingstorage tank

For buffer storage tanks, we use same calculation wall thickness as per ASME b 31.3 , so as per my calculation its 30 mm thick . its too high for 40 inch.

pipe size = 40 inches pipe placing parallel and 1.5 meter distance for connecting pipe i have to use elbow or 180 degree bend in my design pipe is reduced at the bend so can you please suggest the reducer size ,

Dears, I have pipe API 5L Gr.70 , so, which pipe fitting specification use for this ( tee , elbows spec) This is to construct a tank capacity of 261 m3 . The pressure inside is 90 bar (temp = 60 degree Celsius). my pipe thickness is 15.9 is this withstand the pressure .

Dears, I have an 12" pipe spool, i need to support this pipe by trunnion support , Which pipe size we have to select for 12" pipe. i have to give support on 12" Elbow , thanks shamnas

Dears, I need a pipe wall thickness calcuation for 40 inche LSAW Pipe Mterial = API 5L Gr 70 psl2 LSAW. Design Pressure = 63.5 Bar Design Temp = 85 degree celcius corrosion Allowance = 3 mm if LSAW we use the equation thickness = PxD / 2(SE+PY) Thanks and Regards

Dears, which code and spec to follow PWHT for Pig launcher Materials, As per ASME B 31.3 for Hydrostatic test pressure what is the equation we have to follow, I have seen two equation, Test Pressure = 1.5 design pressure or Test pressure = (1.5 x design pressure x allowable stress...

Dear, Good Day, How to select piping and fittings materails for Gas Pipe line , if the design conditions are given like Design temperature and Design Pressure. If the medium change like if there is preheater we use water as medium, so the piping material change or not ? Thanks and Regards

Dears, Can we weld diiferent outer diameter pipes pipes od = 1018 connecting pipe = 1016 ?

Dears, In NDT we have testing ,Positive Material Testing(PMI) , can i know more about that , mainly, -how this test conduct -if we need separate specimen for testing -also the cost if possible. thanks,

Dears, can we use ASTM A 106 GR.B , for high pressure gas supplie, Design Temperature = 85 degree celcius Design Pressure = 237 bar ??