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HI Friends, one of client is requesting to use AISI4130 for valve body & bonnet. Temperature is high as 200 Deg C. I have checked B16.5 for flange but I could not found AISI4130 material for use of flange. is it acceptable to use AISI4130 material ? and where can i find those point for refer.

HI Friends, I am working in choke valve industry. Mostly , tungsten carbide has been used for choke valve trim. Is there any international standard for tungsten carbide's different grades in which i can found chemical as well as mechanical properties. Kamlesh

Hi Friends, I am seeing that mostly choke valve which has been used on wellhead are angle type body choke valve. Is there any benefit to use angle type choke body for choke valve design?

Dear All, Is it possible to increase yield strength up to 60K by heat treatment of AISI316 material?

Dear Friends, I am aware about physical properties of Tungsten carbide like Hardness, density , T.R.S, porosity , Fracture toughness. But My one client is asking about Impact result and one condition is that 400 j impact value of Tungsten parts. I am not aware and never face impact test of...

Dear Friends, i have taken reference of ASTM 29/ ASTM 434 & DIN 1.7218 for AISI 4130 In DIN 1.7218 , i have got chemical & physical property both In ASTM A29, i have got chemical property & ASTM A434 , i have got physical property. But My question is that In all above standard , They have...

Hi frd, My one of client has given process data and choke valve size, flow rate, pressure drop,temp for four different flow rate, pressure drop , temp. condition. I have got CV from above data . But they wrote that " Please provide Tapered size calculation in graphical and tabular format...

Dear Friends, I have design one check valve for 10000 PSI . it is really going good at high pressure. but it is failed at low pressure seat test. I have used high compressive spring also for giving force towards to seat but still it is not working. Any one have idea that what is going...

HI friends, i am using PTFE lip stem seal for 5000 psi. But i have made new globe valve for high temperature at pressure 10000 PSI but it is going to fail and leakage. when i am applying more force on seal. more friction has been generated between seal surface and stem surface. and it is...

Dear Friend, I am working in API 6A valve industry. I have got AISI 4130 certificate. As per ASTM A29, vanadium is not there in AISI 4130 chemical compostion. My material supplier has added 0.002 % vanadium in AISI 4130. his argumentis that AS per API 6A/5.4.5.2 Composition limit. -PSL 2...

Dear Friends, I am going to make overlay of satellite 6 on valve trim. I am not sure that satellite material is in NACE or not?. i have checked that NACE 2002 , UNS R30006 is thr, But in latest NACE 2015, i am not seeing? Does it removed from NACE? Regards Kamlesh

Dear friends. I am going to UNS No C63000 aluminum bronze material instead of Duplex stainless steel in choke valve trim parts. is it ok for NACE also? Please give feedback about use of UNS N0 C63000 material instead of duplex stainless steel.

Hi Friends, I am working on material property and chamical composition . For UNS S42000 material, I have reffered the ASTM A276 & other reference also. But i cound not found tensile & yield strength for UNS S42000 material . Only hardness has been given. Can any one explain to me why Tensile...

HI frds, i am working in valve company & studying more on valve application . Few questions are in my mind. Plug type globe valve & Plug type choke valve both are used. In both product, plug and cage type trim has been used. so what is the difference between them. Why we called globe...

Hi frds, i am seeing body bonnet non standard material table of API 6A 20th th edition. Table no 5. they mention 60k & 70K material for inegral flange but in valve body with inegral end connetion ( flange ), they mention 36k, 45k, 60 , 75 k, so if forge or cast valve body with integral eng...

HI Friends., i am working in valve industry as a design engineer. I am looking material standrads. which ASTM or SAE standard for AISI 4130 acceptace for large cross section , I have reffered ASTM A 29 and other ASTM standard related to AISI 4130. but they can use up to 250 mm diameter...

Dear Friend. i am working in valve industry as a desig engineer. i am not sure that tugsten carbide is NACE material or not? Almost all industry is using tugsten carbide material as a trim material and also in NACE application .

Dear Friends , i am referring few ASTM standards for material acceptance. so few questions here. For ASTM A216 material : why does hardness is not given for material acceptance? Same for ASTM A 182 : Hardness is not given for 316 and F51 Grade. Same for ASTM B 564 standard : Hardness is...

Hi Friends, i am working in valve industry related with API 6A, i am making material specification . Clause 5.2 material specification. For clause 5.4 body , bonnet and end & outlet connection , In processing ( clause 5.4.3.2 hot working practice ) . Does hot working practice make by...

Dear Friends, I am working as a design engineer in Oil and Gas industry. Generally in chemical property of steel or other material, Alloy percentage has been given only without Maximum and Minimum condition or sometimes , it has been given only with Maximum condition . Do any have answer...