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hello I want to prepare FPS for HDPE pipe. How can I calculate drag pressure? thank you

hello Is "ASTM A 234 WP12" equal To "AISI 4140"? thank you

hello dear members I am looking for tips on welding of Copper-Nickle Pipe. Which parameter is highlighted in this material when welding is performed with different process (Tig, SMAW)? thanks

hello If plates of tank courses need built-up Or buttering, is it necessary to preheat or PWHT that location? how much that location is susceptible to crack? I need a reference for that. I could not find anything in API 650. thanks

Thank you all. I agreed that exposed thread is correct but I was looking for a general rule for that. but second problem is that, when one of them needs seal weld and because of weld size which is 10 mm Max. what shall I do with rest of exposed thread? is it possible to grind them to minimum...

hello Design Code ASME B31.3 We have threaded joint in Galv. pipe 6" but, about 2 centimeter of thread of pipe remain out of coupling and assume that some of them shall be sea welded and my concern is exposed thread of pipe. what shall I do? can I grind the thread to remove exposed thread or...

hello to all our design code is asme b31.3 and we want to get the pipes lamination examination, which reference is practicable for that? dose asme b31.3 have any suggestion for that? thank you

thank you MFJewell & LittleInch

hello I want to know about "Fire Fighting Ring" term in refinery and petrochemical plants. What is this Ring exactly? Which standard should be used for design and inspection? Is there any differences between Fire Fighting Ring for tanks with Utilities? thank you

hello Is there any reason for mixing different size of sand together for operation? Dose any standard stated this? thank you

hello I am looking for standard for SA roughness in term of mm. please help me to find how much SA depth in mm is. thank you

hello ASME B31.3 (2014) 328.5.4 (g) A pad or saddle may be made in more than one piece if joints between pieces have strength equivalent to pad or saddle parent metal, and if each piece has a vent hole. Please tell me about two reason? why these reason is important for multi-part pad? thank you

Thank you all

hello What is tag "F10 B12 G13" with an arrow which indicates to a fitting in isometric drawing. what is the definition of each part of tag? thank you

Generally how much torque a valve needs for its operation?

hello I am looking for formula to calculate required torque for following valve: Gate Glob Ball (Float and Trunnion) Or, is there any reference for selecting manual gearbox for valves? thank you

hello The Valve material is WCB>>NACE. By which reference should I compare mechanical property of NACE. Should I compare with WCB as reference or not? Dose NACE material less mechanical property than WCB or it must be the same? thank you

Thank you pennpiper I found more as follow: MV Series Triple Eccentric Metal Seated Valves DS Series Centered Rubber Seated Butterfly Valves TF Series PTFE Lined Butterfly Valves TT Series Full PTFE Lined Butterfly Valves VF Series Double Eccentric Butterfly Valves MR Series Control Butterfly...

hello what is Series DS in butterfly valve? Dose any other series for this valve? thank you