BS 1387 is UK Standard and ANSI/ASTM are American Standards; both deals in the specifications of Steel or Alloy pipes sizes, BORE, WALL THICKNESS, chemical composition, and manufacturing process.
Both are standard in manufacturing and material process specifications.
For example;
ASTM A 53-90b Carbon-Steel Pipes, Welded (F & E Types) or SEAMLESS (S Type) Grade A & B
BS 1387 Medium (Class B) can be the equivalent etc...etc...
Composite toe shoes are made up of composite materials, such as plastic and carbon fiber. A steel toe shoe is made up of only steel.
ANSI valves are based on American National Standards Institute Standards. For example, ANSI 16.34 refer to steel valves. BS valves are based on British Standards. For example, BS1212 refer to ball valves excluding floats.
ANSI stands for "American National Standars Institute"
PN 20 is equal to ANSI 150 & ANSI 300 equals PN 50.
The latest ANSI standard is C99. See the attached link.
Ansi 150 is a pressure grade of flange ie. Ansi #150 Flange. For steel flanges this is specified by ANSI B16.5.
http://www.engineeringtoolbox.com/aisi-sae-steel-numbering-system-d_1449.html here are the ansi codes...you can figure it out
ANSI B36.10 relates to Carbon Steel Pipe, whilst ANSI B36.19 relates to Stainless steel pipe.
Composite toe shoes are made up of composite materials, such as plastic and carbon fiber. A steel toe shoe is made up of only steel.
ANSI 4135
http://www.engineeringtoolbox.com/ansi-steel-pipes-d_305.html
np40 is equivelant to ansi 300#
The standards of designing steel septic tank include the NSF/ANSI Standard, and the ACI Standard.
http://wiki.answers.com/Q/Are_there_any_ANSI_Z41-1991_that_are_not_Steel_toe"
http://wiki.answers.com/Q/Are_there_any_ANSI_Z41-1991_that_are_not_Steel_toe"
No. It just has to meet or exceed the ANSI standards for safety toes. Many are ceramic.
ANSI valves are based on American National Standards Institute Standards. For example, ANSI 16.34 refer to steel valves. BS valves are based on British Standards. For example, BS1212 refer to ball valves excluding floats.