Category: ‘Standard’
The wall thickness associated with a particular schedule depends on the pipe size as can be seen from the charts below for some of the more common sized carbon steel pipes encountered.
Abbreviations used: NB - nominal bore, STD ... Read More...
In the oil and gas and related down stream industries the the most common standards are
- API 5L
- ASME/ANSI B 36.10 Welded and Seamless Wrought Steel Pipe
- ASME/ANSI B36.19 Stainless Steel Pipe
Related posts:What is a pi... Read More...
Pipes are designed to carry fluid, therefore their internal diameter is their critical dimension. This critical dimension is referred to as the nominal bore, appreviated as NB. Obviously, for pipes containing pressurised fluids t... Read More...
Cold rolled finishes apply to flat products such as sheet or coil, with thickness less than about 5mm and usually less than 3mm. They are firstly hot rolled into a strip (or cast into a slab which is hot rolled into a strip) and ... Read More...
Cast iron ASTM A48 class 35 is equal to HT250, FC250, GG25, G25, FGL250, T260, O125, which is a type of high grade gray cast iron. The followings are its application, physical properties, chemical composition and our opinion.
... Read More...
Ductile iron is also known as nodular cast iron, spheroidal graphite iron, spherulitic iron.Ductile iron is a kind of spherical graphite cast iron. The globalization and inoculation processes effectively improved the mechanical p... Read More...
A182 is the standard specification covering forged or rolled and stainless steel pipe flanges, forged fittings and valves and parts for high temperature usage in pressure systems with a temperature range from -20°F to 1100°F.
... Read More...
The purchasers and clients in Germany and Austria usually provided us the standard of DIN EN 1561. This is the old standard, and has been replaced by the new standard DIN 1691. However, we should know how to transfer these two st... Read More...
In the new Standard, apart from some minor editorial errors, there are two points of concern to the ASSDA Technical Committee.
Firstly, the new wall thicknesses that are stated as minimum could lead to a product being supplied... Read More...
The major improvements that have been adopted in the new Standard are:
a. The use of casting as well as wrought materials.
b. All cast fittings are to be properly heat-treated by solution annealing.
c. The ... Read More...
After investigating the alternatives it was decided that International Standard ISO 4144 could be the conduit to rectifying the problems. ISO 4144 in its 1979 form covered most of the committee’s concerns, but it did not allo... Read More...
For many years there has not been a Standard to cover the low-pressure stainless steel cast pipe fittings commonly used in Australia and other countries around the world.
These are commonly termed “150lb” or “BSP” pipe ... Read More...
The Standard establishes specifications for wrought copper and wrought copper alloy, solder-joint, seamless fittings, designed for use with seamless copper tube conforming to ASTM B 88 (water and general plumbing systems), B 280 ... Read More...
This Standard for nonmetallic flat gaskets for bolted flanged joints in piping includes:
(a) types and sizes;
(b) materials;
(c) dimensions and allowable tolerances.
Related posts:ASME/ANSI B16.5 – 1996 – P... Read More...
This standard covers materials, dimensions, tolerances, and markings for metal ring-joint gaskets, spiral-wound metal gaskets, and metal jacketed gaskets and filler material. These gaskets are dimensionally suitable for used with... Read More...
This Standard for cast copper alloy solder joint pressure fittings designed for use with copper water tube, establishes requirements for:
(a) Pressure-temperature ratings;
(b) Abbreviations for end connections;
(c) Sizes ... Read More...
This Standard pertains primarily to cast Class 125and Class 250 bronze threaded pipe fittings. Certain requirements also pertain to wrought or cast plugs, bushings, couplings, and caps. This Standard covers:
(a) pressure-temp... Read More...
This Standard for Ferrous Pipe Plugs, Bushings, and Locknuts with Pipe Threads covers:
(a) pressure-temperature ratings:
(b) size;
(c) marking;
(d) materials;
(e) dimensions and tolerances;
(f) threading; and
(g) ... Read More...
This Standard for cast iron threaded drainage fittings covers:
(a) size and method of designating openings in reducing fittings
(b) marking
(c) materials
(d) dimensions and tolerances
(e) threading
(f) ribs
(g) co... Read More...
This Standard covers ratings, dimensions, tolerances, marking and material requirements for forged fittings, both socket-welding and threaded
Related posts:ASME/ANSI B16.4 – 1998 – Cast Iron Threaded Fittings
ASME/ANSI B16.3... Read More...