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coolsurf
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Join Date: Aug 2011
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What are the Specs for STKM13A-E1?

08/04/2011 12:58 AM

Is it the same as STKM13A from the JIS standards with some *special* qualities?

The spec E(x) in the JIS book stands for electrical resistant weld..... huh? Is it the same as seamless weld but with *special* qualities?
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Pathfinder Tags: 13a 13a-e1 carbon steel carbon steel tube e1 JIS Pipe stkm13a
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

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#1

Re: What is the specs for STKM13A-E1?

08/04/2011 1:10 AM

Weld ≠ Seamless.

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coolsurf
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#2
In reply to #1

Re: What is the specs for STKM13A-E1?

08/04/2011 1:27 AM

so you mean stkm13A is seamless and stkm13a-E1 is welded at the seams? isn't stkm13A pipes are welded at the seams?
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Tornado
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#3
In reply to #2

Re: What is the specs for STKM13A-E1?

08/04/2011 1:55 AM

I am not very familiar with Japanese standards. In the U.S., there are pipe standards such as SA53-B-ERW and SA53-B-S. Here, ERW (or just E) = electric resistance welded, and S = seamless. In many cases they are equally good, and either can serve for the other. But there may be Codes or customer preferences that require specifically one, but not the other.

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coolsurf
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#4
In reply to #3

Re: What is the specs for STKM13A-E1?

08/04/2011 2:13 AM

electric resistance welded? how is that done on the pipe?

seamless has no welds done on the pipe right?
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Tornado
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#5
In reply to #4

Re: What is the specs for STKM13A-E1?

08/04/2011 2:29 AM

I forget; but one could probably Google it. Basically, "skelp" (coiled flat stock) is roll-formed into a pipe/tube with a longitudinal welded seam. Some related topics could include extrusion (either through bridged dies for welded pipes/tubes, or over a mandrel for seamless); and DOM (drawn over mandrel) tubes. You are correct that seamless is without welds.

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regsoft
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#6

Re: What are the Specs for STKM13A-E1?

08/05/2011 2:47 AM

I would recommend http://www.batteryrefill.com/

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