Why A Newsletter?
In an effort to provide our customers with more
value and service, Maass Flange & Fitting Canada, Inc. is pleased to present you this
first edition of what is planned to be a monthly newsletter. We hope you will find
useful information on flanges and fittings as well as keep up to date with what is new at
Maass Canada. Please, feel free to print this page out and circulate it throughout
your organization, and encourage everyone to visit and browse this web site. The URL
is www.maass.on.ca . We would like your feedback regarding both the newsletter and our web site. We
would also like to have your suggestions (wants and/or needs) for future topics related to
flanges and fittings.
Specifications
We have chosen to start by giving you some
dimensional tolerances covering ASME B16.5 flanges. This standard covers dimensions,
tolerances, materials, proper marking, testing, and pressure-temperature ratings for
flanges in the 1/2" through 24" NPS range. Rating Classes include 150,
300, 400, 600, 900, 1500, and 2500. Did you know that 1/2" through 2 1/2"
NPS 900lb. flanges are identical to 1500lb? Also, the only difference between a
1" 300lb. and a 1" 600lb. is the faces which are 1/16" and 1/4"
respectively. ASME B16.5 is where you will find these dimensions and other details
like the fact that Class 150 and 300 flanges are normally furnished with a 1/16"
raised face which is included in the flange minimum thickness and length
through hub. However, Class 400 and higher are supplied with a 1/4" raised face
which is in addition to the thickness and length through hub. From
facings to bolting to marking or testing, B16.5 covers the topic or refers you to the
applicable standard which does.
While B16.5 applies to sizes up to 24"
NPS, it is B16.47 you must turn to for larger diameters of 26" through 60" NPS.
The most common piece of information left out of inquiries for large diameter
flanges is which of Series A or B the |
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customer requires. Series A are
generally used while Series B are compact flanges that, in general, have a smaller OD,
thickness, length through hub, and bolt circle. Series A or B (the old MSS and API
respectively) should always be specified and is particularly important when mating flanges
to existing product.
Other Specifications kept on file here at Maass
Canada include; B16.36 - Orifice Flanges, B16.11 - Forged Socketweld & Threaded
Fittings, and B16.9 - Buttweld Fittings to name a few.
If you have any questions regarding flanges and
fittings, specifications, or materials, please give us a call or contact us right here
through the web site and one of our highly qualified people will have the answer for you.
René Vilon
Jeff Brewer
Darren Dayman
Contact Information
- Telephone
- 519-668-7715
- FAX
- 519-668-6765
- Postal address
- 1019 Adelaide St. S., London ON. Canada N6E 1R4
- Electronic mail
- René Vilon: renev@maass.on.ca
Sales: sales@maass.on.ca
Office Manager: office@maass.on.ca
Quality Control Manager: mfg@maass.on.ca
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