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rneill and danw2 thanks Mabye I catch something and the male socket weld http://files.engineering.com/getfile.aspx?folder=dcdf82ef-bf72-43d2-967f-7d12f833f640&file=male_socket_weld.jpg

Hi everyone What is male/female socket weld? Is that the same with male/female Threaded? So the male socketweld is buttweld,Is that right?

so good,all thanks a lot for you attend I catch more

anegri,gerhardl and hsbcn thanks a lot! for you explain ,maybe I catch something The high performance type of butterfly valve It must be eccentric design,one ,two or third and sealing face will be metal Is that right? And the seal of PTFE is also consist. okay,thankyou?

hello,everyone I want to kown what is the high performance type for butterfly valve?can someone explain to me? regards ryan

John okay, It is important to me! thank you very much.

Hi ,everyone what is piggable valve? Who can explain,please!

Ye,thankyou,I will try I must be fine,I think

Hi rneill I must say thankyou again. I mean that what is the valve welding type, when the pipe type is no determine.and I choose must be suitable General situation.maybe a form such as flow: valve class pipe type 2500lb sch160 1500lb sch80 900lb sch80 600lb...

Hi reverman good,Is that have more contrast about pipe, forge ,cast such as A350 LF2... completely,yes,completely will so good

rneill,so good,thankyou Normally,Is that have contrast about rating and pipe type such as,welding end valve of rating 2500lb,we will choose SCH160 or XXS,and the other,what is contrast? regards

Hi everyone Now I have a problem of welding end valve I donot how to choose the type of SCH No. only have ASME B16.25,ASME B16.34 and ASME B36.10M Is that anyone tell me how to choose,when the valve rating is 150LB,300LB,600LB,900LB,1500LB,2500LB regards