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Can we use the casing as column pipe, I raised up this question as API 5CT , Grade J55 , classifies the type as per the pipe size , If the size is less that 4 ½” , the product is classified as PIPE , for larger size the product is classified as CASING . So for example, can we use the 6” API J55...

Dear stanweld , According to the ASME B31.1 (Version 2001) , the maximum allowable stress for ASTB A53 Gr.B , Type S (Seamless ) , is 15 ksi , and for Type E ( Electric resistance welded pipe) is 12.8 ksi, maybe for new update version it is different.

I did a calulation to know the minimum wall thickness required for carbon steel pipe (ASTM A53 Gr.B , type E) that will be used for potable water pipes. I did the calculation according to two ASME codes : ASME B31.1 : Power Piping ASME B31.4 : Pipe line transportation system The calculated...

I just need to know one thing ... during the facbrication of steel , what is the main difference between grade A and grade B ,I know the strength is different between both,, BUT is it related to the content or the heat treatment ?? I thought the carbon content is one of the main issue . What...

CRG and Creg : I don't have any access to pipe code . is there are any equation that I can follow to calculate the working pressure for the steel pipe of standard ASTM A53 Gr.B , Type E , and the pipe will be used for drinking water transmission line ?? any equation that you recommend and I can...

For electrical submersibl pump that will be installed inside deep water well , it ws specified to install die electric section between the pump and the column pipe to prevent electrolysis . about 3m above the pump end we will installa check valve . I don't know so much about the die elctric...

The manufacturer datasheets show the following : minimum yield strength 35 ksi maximum yield strength 60 ksi The submitted minimum yied strength match the ASTM A53 Gr.B ( Table 2 - Tensile requirements ) , but they did not show the minimum tensile strength that should be 60 ksi min , they only...

Dear all, I need to know the working pressure for welded steel pipe of standard ASTM A53 Grade B , Type E , and of SCHEDULE 20 for Pipe sizes of 8” , 10” , 12” , and 16 “ ?? our specifications call for pipes to be rated for 600 psi working pressure , so we need to be sure that the above...

nhliew , Thanks for your input , but the Carbon content they chose is less than Grade A , and we apesify grade B , so can we get the required tensile strength and yield strenght for grade B ( 35000 psi and 60000 psi ) with the same carbon content the manufacturer proposed ? This raise the...

I am working in a water project, at which welded steel pipes will be used according to the following standard: ASTM A53, Grade B, Type (E), and rated for 600 psi working pressure. The contractor proposed to supply the steel pipes from one of the manufacture, the submitted datasheets from the...

My question is so simple, and it is in general for any Welded steel pipe with cement lining that will be used for potable water application: I need to know if NSF 61 standard is only applied to the internal cement lining or it should be applied to the steel pipe chemical composition after...

For the welded steel pipes and the galvanized steel pipes that will be used for potable water applications , the WS pipes will have internal cement lining , I know that the internal cement lining that will be in contact with potable water shall have NSF61 approval and satisfy current...

In the past I asked a question about the difference between the schedule and the Grade for the steel pipes, The answer was: Schedule is associated with the pipe thickness whereas Grade is normally associated with the material (For Example 8"nb Schedule 40 - Materials API 5L Grade B) My...

Sorry dabluffrat , I just observed it was the multiplier to convert the unit from KW to hp. Thanks,

dabluffrat , why did you divide the Motor Input KW from VFD by / 0.746 to get the Input HP to motor How did you get this number 0.746 ? and is it applicable for all the VFDs ?

I need to calculate the pump efficiency for an installed booster pump. I have a problem with calculating the output power of the motor (the brake horse power BHP) , I can calculate the input power for the motor by using the data I can get from the VFD , and I can calculate the output power of...

I have a discussion with some engineers regarding the selection of the impellers material for horizontal booster pumps that will be used to pump clean water, with the possibility to have small debris passing through the pump (like sand and silt). The selection is between Cast iron and Bronze...

BigInch, Thanks alot.

Biginch , the surge tank that we will use is a bladder tank , that will be charged for a certain value of pressure.

I am working in water project to rehabilitate water pumping stations , the stations were built before 6 years , the discharge operating pressure is around 35 bar , the original design for the stations included surge anticipating valve (SAV) to absorb the surge waves during the power failure...