Hello everyone,
I am procuring JIS 3101 SS-400 grade sheets of thickness 1/16", 1/8" and 3/16". As per our requirement Heat number shall be embossed on sheets for MTC verification. However, supplier is claiming that the heat no. won’t be embossed on the sheets as these sheets are cut from coil...
Hello everyone,
I want to confirm regarding gate valve flange thickness and Port Diameter. I am procuring 3" ×150# Rating gate valve in accordance with API 600. End flanges needs to be in accordance with ASME B16.5. I have noticed that vendors are quoting gate valves having flange thickness of...
I want to confirm that what is maximum time delay between welding and PWHT for welding on ASTM A335 P9 pipe. Can we do PWHT "immediately" after welding or there is some standard time of wait before doing PWHT. Further how much maximum delay is allowed before PWHT?
Thanks and Regards,
Hello,
I am fabricating heat Exhanger through one of local contractor. As per drawing specification the thickness of Tube sheet is 30mm . However the available plate for tube sheet have thickness of 63mm. Please confirm that is it allowable to reduce thickness by 33mm through machining. Does...
Hello,
We are executing job for fabrication of Heat Exchanger through Contractor. As per drawing specification, the baffle and impingement plate material is ASTM A283 Grade C but due to material availability issue contractor is requesting to use European standard material EN 10025 S 275. Can we...
Hello,
AS we know that ASTM A300 Class 1 has been obsoleted standard, one of our heat exchanger was fabricated using ASTM A300 Class 1. What is other alternate material of this standard, can I use ASTM A516 Gr 70 now?
Hello,
I am fabricating Kettle type heat exchanger from contractor whose specification are as follows:
Service of Shell Side: LPG
Service of Tube Side: Steam
Minimum temperature of LPG : 50 Centigrade
Maximum temperature of LPG : 80 Centigrade
Minimum Allowable Working temperature of shell...
Hello,
We are facing Boiler Stack Corrosion. In 2006 we have installed new stack of boiler , but in recent year due to increase in sulphur content, stack plates are are getting corroded severely. We have plan to replace defective portion of stack. This time we are considering to apply lining or...
I am procuring Pipe bend with following specification for economizer section of Boiler:
Outer Diameter: 33.40mm
Thickness: 3.38mm
Length of pipe bend: 226mm
Material: A106 Grade B
Design Pressure: 800 PSIG
Design Temperature: 232 Centigrade = 450 Fahrenheit
Bend radius at Center-line of Bend =...
I am procuring Pipe bend with following specification for economizer section of Boiler:
Outer Diameter: 33.40mm
Thickness: 3.38mm
Length of pipe bend: 226mm
Material: A106 Grade B
Design Pressure: 800 PSIG
Design Temperature: 232 Centigrade = 450 Fahrenheit
Bend radius at Center-line of Bend =...
Hello,
I am procuring gasket sheet for different equipment's used in refinery. The specifications are as follows:
Size: 2m X 1.5M X 3mm Thick
Material: Graphite sheet reinforced with SS316 Wire mesh
Specification; As per ASTM F36 A
MAX Working Pressure: 200bar
MAX working Tepmrature: 500...
Hello,
I am procuring Boiler Air pre heater tubes whose Material written in drawing is as follows:
OLT 35
STAS 8183-80
In regard to this, what will be the equivalent ASTM material of above mentioned tmaterial.
Hello,
I am procuring gasket sheet used at Refinery based equipments.
The detail of gasket is as follow:
Size: 2 meter X 1.5 meter X 1.5mm thick
Material: High quality compressed synthetic fibre based on Aramid/ glass/ carbon fibre with NBR bindre.
Type: Soft cut
Max Temp: 400 centigrade
Max...
Hello,
I am procuring gasket sheet used at Refinery based equipments.
The detail of gasket is as follow:
Size: 2 meter X 1.5 meter X 1.5mm thick
Material: High quality compressed synthetic fibre based on Aramid/ glass/ carbon fibre with NBR bindre.
Type: Soft cut
Max Temp: 400 centigrade
Max...
I am writing with reference to the Heat Treatment of Air Cooler Headers of Petroleum Refinery.
As per Inspection recommendation, we need to carryout the replacement of both Plug Sheets of Air Cooled HX Headers having design pressure of 21 bar (gauge) and design temperature of 150 degree Celsius...
We are using CS tubes with extruded type aluminum fins for Air Coolers. Our specifications for tube are:
Tube: OD 1", 14BWG, CS
Fin: OD 2 1/4", Pitch 3.175mm, thickness at crest 0.2-0.3mm, Aluminum B221-6063-0
Some suppliers are quoting for fin thickness of 0.4mm.
May i cross reference the...
Can I use A105 instead of A-516 Gr70 for heat exchanger channel head cover plate and for support plate of tube bundle. Is it possible or better to replace A-516 Gr70 with A105 ??
I am determining the schedule for A106 Gr B Seamless pipe for the following conditions:
Operating Pressure: 70 bar
Temperature: 120 Farenheit
NPS: 3 inch
Service: Hydrogen
How may i convert my operating pressure into design pressure???
