Vulcan entered the long bar quench and temper market and now the Heat Treating division is the largest long bar, induction heat treater in the world with annual. Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. In developing this information, Fastenal has. Esparragos #B7 #Cadmiados #Fluorocarbonados #Galvanizados #Quito # Ecuador [email protected]

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F is the recommended washer for A B7 bolts, espargagos can a mild steel washer be used for A B7? Dear Sir, I have a query.

At wellhead esoarragosEsparraggos bolts used instead of B7Mis there any big issue. Will Grade 8 bolts work as a replacement? Mehul — We do not heat treat in house, so you will need to contact a heat treat facility to get specifics about their process. Why is this line not mentioned in numerous doccuments? I do not know why the documents you reference do not mention the line, perhaps they have not been updated since the change was made.

There are demagnetization techniques, but normal, off the shelf B7 and B7M bolts will be magnetic. It is up to the esarragos or engineer if they are required or not. I have a query. Dear sir, Can u explain why yield and tensile strength reduce when increase the bolt diameter?


I understand we could not tighten the internals bolts B7M in our case and it should withstand in extreme process condtion i. Hi, please let us know what is the difference between A and A May you help me esparrago material specifications… I have a problem about material MS That said, ASTM F washers are an off the shelf, very common washer that may provide the same benefit at a much esparrqgos cost.

A mild steel washer is not hardened and will likely not perform as well espraragos B7 bolts or studs. There are some differences between the two.

Grupo Kazerooni – Varilla Roscada, esparragos B7, B16, Monel y mas Varilla Roscada

If the purchaser does not specify 3. Osama- We are sorry, but we are not familiar enough with the requirements of esparrahos lifting stations to know if B7M bolts are allowed. We have summaries for both ASTM standards on our website.

As for the studs, same answer, make sure an engineer is ok with the substitution as there may be pros and cons to making the switch. Vijay- Of those, A B7 is the closest to grade 8. It will depend on how they are being used and what the engineer designed for. You will need to consult with the project engineer. The corresponding nuts standards are A grade 8M and F group 2.

Esparragos ASTM A193 Gr. B7, 2 Tuercas A194 Gr 2h Bolt

Same as baking a cake — if it is large, the center never gets completely done. Dear sir, May you help me about material specifications… I have a problem about material MS Usama- In order to change B7 to B7M, you would need to temper the bolts to a lower hardness.


Thanks a lot, Ashkiani. Vizal- I am sorry, but we cannot make any specific grade recommendations. Islam — You would need to get approval from the project engineer to change bolts. Manickam- We manufacture carriage bolts and timber bolts, both which have a round, curved head.

Jonathan — for materials that are heat treated, the reason is that the heat treating has hard time penetrating all the way to the center of the steel, so the larger your material gets, so weaker the 7b section might be.

B16 or A Gr. Washers can, and are sometimes used with both stud bolts and machine bolts. However, I find some contradicting answers when searching around, can it be both depending on the heat treatment and consequent microstructure?

ASTM A193 B7 vs. A193 B7M

What can be the risks if we accept it as is? Nitin — There are several differences, too many to list here.

Martin- For all intents and purposes, they are the same.