Check out this reference document...
http://www.vdma.org/wps/wcm/resources/file/eb4d5705b488435/VDMA-Information_Sheet_Riboflavintest_Dec_2007.pdf
Please share any riboflavin test information that you have?
Bob
Occasionally we are requested to fabricate a header system. Typically the header system will be mounted horizontally. It will have a main feed pipe with several branch pipes that are perpendicular to the main feed pipe. The branch pipes will be connected to the main pipe by using a branch...
metengr, thanks for the reply. I read (b) as for design temps above the test temps.....this application design temp is 1400°F and the test temp is ambient. Am I missing something here?
any additional comments?
We are being contracted to fabricate an austenitic(316) pipe in pipe lance feeding a dual liquid nozzle(air and steam). Process pressures are 80psi. 80 psi in the inner pipe and 80 psi in the outer pipe. Lance will be operated in a duct exposed to 1400°F gas temp. Typically we receive only...
The A36 is 10" pipe, eventaully having the id hardfaced. I dont see any prior purging of the interior of the pipe required in the past. I am working with a new fabricator...just welded up his test coupon..be it a pipe coupon...gtaw process for the root pass 309L...smaw process using flux cored...
I need to weld 1/2" a36 to 1/2" a36 which will eventually be overlayed one side with hard face. The customers spec is tig root pass with 309l and fill and cap with 309l. Why this process....should the weld be purged? Any help with generating a WPS? Bob
I have a 1" 316H pipe w/alloy 625 bellow in 2" 316H outer pipe..it is a spray lance. There is a class 300 flange welded to the outside pipe to be able to get it into a 1150°F duct. It is a B31.3 application also requiring a CRN. What are the minimum calculations that will be required for this...
It is NI 99 0.125" thick. The 6" pipe is part of a spray lance. The 6" pipe section is welded to a 8" 600# flange. The other end (spray end) has a 6 x3 conical reducer and a 3 x 2 conical reducer ending with a small air atomizing nozzle. the 30" 6" pipe section along with the conical reducers...
I need some help in predicting shrinkage of pipe after it has been overlayed with nickel. I have a 30" long piece of 6" sch80 304ss pipe that will be overlayed with nickel. Any help will be appreciated. Bob
I need some help in predicting shrinkage of pipe that has been clad with nickel. I have a 30" piece of 6" sch80 304ss pipe. If it is overlayed with nickel how much will it shrink? Bob
the load the nozzle would see is calculated by dead heading the nozzle. So inrelaity the nozzle may never see this type of load. the typical load on the nozzle while being used would be constant. Bob
the nozzles range in size from 4" TO 16". A 4" nozzle would see a max force of 500lbs, a 6" nozzle would see a max force of 1100lbs, a 8" nozzle would see a max force of 2000lbs, a 10" 3000lbs, a 12" 4500lbs, 14" 7000lbs, 16" 8500lbs. Bob
