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Anonymous Poster

Difference Between API 5L and A 106 GR.B Pipes

12/18/2007 10:40 AM

sir,

I have a doubt where API 5L pipes should be used. and A106 GR.B should be used.

because we are using in equipment(pressure vessel) generally using A106 Gr.B instead of can we use API 5l GR.B. pls. advise.

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Power-User

Join Date: Nov 2007
Location: Alberta Canada
Posts: 182
Good Answers: 9
#1

Re: Difference Between API 5L and A 106 GR.B Pipes

12/18/2007 11:46 AM

Hi Guest,

Unless the code governing what you do dis-allows it, or the requirement is for seamless pipe only, the two are interchangeable.

As an example, the company I work for is a distributor of steel pipe, flanges and fittings. When we order pipe of this type, we order it "quad stencilled", which means it complies with and is certified to all of the following:

A/SA 53B

A/SA106B

API5L B

CSA Z245.1 Grade 290 cat I

Because these standards are so similar, it is easy to make one piece of pipe that will satisfy the requirements of all. It is far more efficient for us to do this than carry seperate inventories of each A53B, A106B, API 5L B and CSA.

A couple of notes to go with this.

A106B pipe is, be definition, seamless, whereas, A53B, API 5L B and CSA can be either seamless OR welded. So, when we order quad stencilled pipe, is has to be seamless. Also, the spec for CSA is higher than for the ASTM/ASME and API grades, but CSA is a requirement for a number of our customers, which is why we add that on.

Hope this helps

IPG

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Anonymous Poster
#3
In reply to #1

Re: Difference Between API 5L and A 106 GR.B Pipes

01/21/2008 9:37 AM

sir,

am confusing about the usage of weld neck and slip-on flange.

pls. explain where each one will be prefer??...

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Power-User

Join Date: Nov 2007
Location: Alberta Canada
Posts: 182
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#4
In reply to #3

Re: Difference Between API 5L and A 106 GR.B Pipes

01/21/2008 10:54 AM

Hi Guest,
sorry, but that is a question more for a designer, which I am not.

I suggest that you post this question

"Under what circumstances would you use a slip on flange instead of a weld neck flange" under the heading "Flanges"

and see what responses you get.

Good luck!

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Anonymous Poster
#5
In reply to #3

Re: Difference Between API 5L and A 106 GR.B Pipes

03/12/2008 10:53 AM

Slip on Flange is slipped over the OD pipe and projects slightly beond the pipe end and it is fillet welded to the pipe and used for low pressure service such as cooling water system and fire water system and not recommended to be used for high temperature/hazardous services and sever cylic loads because of the big possiblity of failure of the fillet weld.

WN falnge is the most strength flange used in industry and is butt welded to the pipe and used for high temp/pressure and hazardous services. It's available in different sizes and up 2500 calss rating and more expensvie than slip on flanges.. refer to ASME B16.5 for more details

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Anonymous Poster
#6
In reply to #3

Re: Difference Between API 5L and A 106 GR.B Pipes

03/12/2008 10:59 AM

Dear Guest

Slip on Flage is slipped over the OD pipe and projects slightly beond the pipe end and fillet welded to the pipe and used for low pressure service such as cooling water system and fire water system and not recommended to be used for high temperature/hazardous service and sever cylic loads because of the big possiblity of failure of the fillet weld.

WN falnge is the most strength flange used in industry and is butt welded to the pipe and used for high temp/pressure and hazardous services. It's available in different sizes and up 2500 calss rating.. refer to ASME B16.5 for more details

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Anonymous Poster
#8
In reply to #3

Re: Difference Between API 5L and A 106 GR.B Pipes

06/12/2009 12:59 PM

weld neck are almost always the preferred flange. slip-ons are usually used when pipe misalignment is present or when room to actually weld is not available. note that NDE requirements are different for the two types

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Anonymous Poster
#9
In reply to #3

Re: Difference Between API 5L and A 106 GR.B Pipes

10/15/2009 12:36 AM

Sir,

what is the difference between API 5L GRADE A and API 5L GRADE B

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Anonymous Poster
#7
In reply to #1

Re: Difference Between API 5L and A 106 GR.B Pipes

09/27/2008 11:06 PM

dear sir

can you give me your in contact formation ,i am a steel pipe and pipe fitting manufatue ,if you have any matter you can keep touch with me

mail :sea115000@gmail.com

msn :sea115000@live.cn

skype :steelpipe.prince

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Anonymous Poster
#10
In reply to #1

Re: Difference Between API 5L and A 106 GR.B Pipes

05/06/2010 10:09 PM

Thanks for your information.

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Participant

Join Date: Apr 2011
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#11
In reply to #1

Re: Difference Between API 5L and A 106 GR.B Pipes

04/08/2011 3:46 PM

hi

can i buy API pipes instead of ASTM A106 GR B ? they have the same material or not ? what about the price , API is cheaper than A 106 ?

thanks

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Member

Join Date: Nov 2007
Location: Boerne Texas
Posts: 8
#2

Re: Difference Between API 5L and A 106 GR.B Pipes

12/18/2007 11:20 PM

Grade 1 (ASTM A252) Minimum Yield Strength: 30,000 psi Maximum Yield Strength: None Minimum Tensile Strength: 50,000 psi Notes: This grade is a standard grade for ASTM A252. The specification covers the requirements for welded and seamless steel piling pipe. Grade 2 (ASTM A252) Minimum Yield Strength: 35,000 psi Maximum Yield Strength: None Minimum Tensile Strength: 60,000 psi Notes: This grade is a standard grade for ASTM A252. The specification covers the requirements for welded and seamless steel piling pipe. Grade 3 (ASTM A252) Minimum Yield Strength: 45,000 psi Maximum Yield Strength: None Minimum Tensile Strength: 66,000 psi Notes: This grade is a standard grade for ASTM A252. The specification covers the requirements for welded and seamless steel piling pipe. Grade A (ASTM A53, A106, A523, API 5L PSL1 ) Minimum Yield Strength: 30,000 psi Maximum Yield Strength: None Minimum Tensile Strength: 48,000 psi Notes: This grade may be used for standard pipe, line pipe, or conduit pipe as specified in the various ASTM and API specifications. Grade B (ASTM A53, A106, A523, API 5L PSL1) API 5L PSL2 Minimum Yield Strength: 35,000 psi 35,000 psi Maximum Yield Strength: None 65,000 psi Minimum Tensile Strength: 60,000 psi 60,000 psi Maximum Tensile Strength: None 110,000 psi Notes: This grade may be used for standard pipe, line pipe, or conduit pipe as specified in the various ASTM and API specifications. Grade C (ASTM A106) Minimum Yield Strength: 40,000 psi Maximum Yield Strength: None Minimum Tensile Strength: 70,000 psi Notes: This grade can only be manufactured by the seamless process and is intended for high-temperature service as outlined in ASTM A106. API 5L X42 PSL1 PSL2 Minimum Yield Strength: 42,000 psi 42,000 psi Maximum Yield Strength: None 72,000 psi Minimum Tensile Strength: 60,000 psi 60,000 psi Maximum Tensile Strength None 110,000 psi Notes: This is a standard line pipe grade specified in API (American Petroleum Institute) specification 5L. API 5L X46 PSL1 PSL 2 Minimum Yield Strength: 46,000 psi 46,000 psi Maximum Yield Strength: None 76,000 psi Minimum Tensile Strength: 63,000 psi 63,000 psi Maximum Tensile Strength: None 110,000 psi Notes: This is a standard line pipe grade specified in API (American Petroleum Institute) specification 5L. API 5L X52 PSL1 PSL2 Minimum Yield Strength: 52,000 psi 52,000 psi Maximum Yield Strength: None 77,000 psi Minimum Tensile Strength: 66,000 psi 66,000 psi Maximun Tensile Strength: None 110,000 psi Notes: This is a standard line pipe grade specified in API (American Petroleum Institute) specification 5L. API 5L X56 PSL1 PSL2 Minimum Yield Strength: 56,000 psi 56,000 psi Maximum Yield Strength: None 79,000 psi Minimum Tensile Strength: 71,000 psi 71,000 psi Maximum Tensile Strength: None 110,000 psi Notes: This is a standard line pipe grade specified in API (American Petroleum Institute) specification 5L. API 5L X60 PSL1 PSL2 Minimum Yield Strength: 60,000 psi 60,000 psi Maximum Yield Strength: None 82,000 psi Minimum Tensile Strength: 75,000 psi 75,000 psi Maximum Tensile Strength: None 110,000 psi Notes: This is a standard line pipe grade specified in API (American Petroleum Institute) specification 5L. API 5L X65 PSL1 PSL2 Minimum Yield Strength: 65,000 psi 65,000 psi Maximum Yield Strength: None 87,000 psi Minimum Tensile Strength: 77,000 psi 77,000 psi Maximum Tensile Strength: None 110,000 psi Notes: This is a standard line pipe grade specified in API (American Petroleum Institute) specification 5L. API 5L X70 PSL1 PSL2 Minimum Yield Strength: 70,000 psi 70,000 psi Maximum Yield Strength: None 90,000 psi Minimum Tensile Strength: 82,000 psi 82,000 psi Maximum Tensile Strength: None 110,000 psi Notes: This is a standard line pipe grade specified in API (American Petroleum Institute) specification 5L.

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Participant

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#12
In reply to #2

Re: Difference Between API 5L and A 106 GR.B Pipes

10/10/2013 8:13 AM

Dear Mr. DallasB,

Thanks for updated such mechanical properties history of Gr.B & API-5L... but question is that why Gr.B Pipe were used in piping and API-5L pipe for Under ground pipe line. could you please describe in details and can we used API-5L grade pipe in piping system.

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