How are the specification dimensions of common elbows and tees represented?
Thread Content
As the title says!
Elbow, 1.5DG, 1.0DG, or 90 degrees, 45 degrees. It seems that the tee has no intention of expressing anything; it’s just one type.
Three-way connections: same diameter and different diameter types DNA*A*A DNA*A*B
The standards for elbows and tees are SH/T3410, GB/T14383, ASME B16.11, SH/T3408, GB/T12459, GB/T13401, ASME B16.9, etc. In addition to the material, the description details for elbows include the following: 1. Nominal diameter: DN (NPS); for reducers, the sizes of the two ends must be specified ； 2. Series: Series I, II ； 3. Type: 45°, 90°, 180°, etc ； 4. Radius of curvature: R=1.0D, R=1.5D, R=3.0D, R=6.0D, etc ； 5. Connection type: SW, NPT (Rc), BW, etc.; for special elbows such as those with internal and external threads, the connection types of both ends should be specified ； 6. Port sizes: SW’s CLxxxx (3000, 6000, 9000), NPT (Rc)’s CLxxxx (2000, 3000, 6000), BW’s SCHxx (same as the pipe wall thickness), etc.; for elbow fittings, the sizes of both ports must be specified ； In addition to the material, the description details for a tee include the following: 1. Nominal diameter: DN (NPS); for tees with different diameters, the sizes of the two ports must be specified ； 2. Series: Series I, II ； 3. Type: T-type, Y-type ； Same diameter, different diameters, etc ； 4. Connection type: SW, NPT (Rc), BW, etc ； 5. Port sizes: SW’s CLxxxx (3000, 6000, 9000); NPT (Rc)’s CLxxxx (2000, 3000, 6000); BW’s SCHxx (same as the pipe wall thickness). For reducing tees, the sizes of both ports must be specified ；
There are several ways to label elbows and tees; some are standard while others are practical. However, it is necessary to indicate the following: angle, name, type, specifications, wall thickness (pressure), material, standard, and any other special requirements. For example:
1. 90EL DN150 SCH40 20# GB/T12459-2005 – This means a 90-degree elbow with a long radius; specification DN150, wall thickness grade SCH40, material 20#, manufacturing standard GB/T12459-2005.
2. 180° elbow 1.5D Φ168.3*7.11 20# GB/T12459-2005 – Same meaning as above, except the angle is 180 degrees.
3. 90ELBOW LONG 6” SCH40 A234 WPB ASME B16.9 – Same meaning as above, but using American standard labeling.
4. S90E 3000LB DN50 304 GB/T14383-2008 – A 90-degree socket elbow with a pressure rating of 3000LB; equivalent to SCH80; specification DN50, material 304 stainless steel, manufacturing standard GB/T14383-2008.
5. T45E 3000LB DN50 304 GB/T14383-2008 – A 45-degree threaded elbow with a pressure rating of 3000LB; equivalent to SCH160; specification DN50, material 304 stainless steel, manufacturing standard GB/T14383-2008.
For tees, it is mainly necessary to indicate whether they are equal-diameter or unequal-diameter, along with name, specifications, wall thickness or pressure grade, material, manufacturing standard, and any other special requirements.
1. T(S) DN100II SCH40 20# GB/T12459-2005 – This refers to an equal-diameter tee; specification DN100, series II, outer diameter, wall thickness grade SCH40, material 20#, manufacturing standard GB/T12459-2005.
2. T(R) Φ114.3*60.3/6.02*3.91 S30408 GB/T12459-2005 – This refers to an unequal-diameter tee; specification 114.3*60.3, wall thickness of 6.02 for the main pipe and 3.91 for the branch pipe, material stainless steel S30408, manufacturing standard GB/T12459-2005.
3. Straight TEE 4” STD A234WPB ASME B16.9 – Using American standard labeling; equal-diameter tee with a specification of 4”, wall thickness STD, material A234WPB, manufacturing standard ASME B16.9.
4. S45T DN50 SCH80 20# GB/T14383-2008 – A 45-degree socket tee; specification DN50, pressure grade SCH80, equivalent to 3000LB, material 20#, manufacturing standard GB/T14383-2008. Standard labeling methods can also be used, as well as those that specify outer diameter and thickness; as long as all these necessary details are clearly stated
1. 90EL DN150 SCH40 20# GB/T12459-2005 – This means a 90-degree elbow with a long radius; specification DN150, wall thickness grade SCH40, material 20#, manufacturing standard GB/T12459-2005.
2. 180° elbow 1.5D Φ168.3*7.11 20# GB/T12459-2005 – Same meaning as above, except the angle is 180 degrees.
3. 90ELBOW LONG 6” SCH40 A234 WPB ASME B16.9 – Same meaning as above, but using American standard labeling.
4. S90E 3000LB DN50 304 GB/T14383-2008 – A 90-degree socket elbow with a pressure rating of 3000LB; equivalent to SCH80; specification DN50, material 304 stainless steel, manufacturing standard GB/T14383-2008.
5. T45E 3000LB DN50 304 GB/T14383-2008 – A 45-degree threaded elbow with a pressure rating of 3000LB; equivalent to SCH160; specification DN50, material 304 stainless steel, manufacturing standard GB/T14383-2008.
For tees, it is mainly necessary to indicate whether they are equal-diameter or unequal-diameter, along with name, specifications, wall thickness or pressure grade, material, manufacturing standard, and any other special requirements.
1. T(S) DN100II SCH40 20# GB/T12459-2005 – This refers to an equal-diameter tee; specification DN100, series II, outer diameter, wall thickness grade SCH40, material 20#, manufacturing standard GB/T12459-2005.
2. T(R) Φ114.3*60.3/6.02*3.91 S30408 GB/T12459-2005 – This refers to an unequal-diameter tee; specification 114.3*60.3, wall thickness of 6.02 for the main pipe and 3.91 for the branch pipe, material stainless steel S30408, manufacturing standard GB/T12459-2005.
3. Straight TEE 4” STD A234WPB ASME B16.9 – Using American standard labeling; equal-diameter tee with a specification of 4”, wall thickness STD, material A234WPB, manufacturing standard ASME B16.9.
4. S45T DN50 SCH80 20# GB/T14383-2008 – A 45-degree socket tee; specification DN50, pressure grade SCH80, equivalent to 3000LB, material 20#, manufacturing standard GB/T14383-2008. Standard labeling methods can also be used, as well as those that specify outer diameter and thickness; as long as all these necessary details are clearly stated
:lol:lol:lol The simplest and most straightforward way. . . Check the fitting standards. . . Of course, the marking method also needs to include standards. . . This way it will correspond