A234 WP11 elbow
Mark A234Wp11 Elbow is the manufacturing process of Astm A234 WPB.
W = WELDABLE / wrought
P = RELATED TO P NUMBER OF ALLOY MATERIAL
B = REFER TO MINIMUM YIELD OF MATERIAL
Chemical Composition (%) of ASTM A234
| Grade | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | V | Nb |
| WP11 CL1 | 0.05-0.15 | 0.30-0.60 | 0.03 | 0.03 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | - | - | - | - |
| WP11 CL2/3 | 0.05-0.20 | 0.30-0.80 | 0.04 | 0.04 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | - | - | - | - |
Notes:
- For each reduction of 0.01% below the specified C maximum, an increase of 0.06% Mn above the specified maximum will be permitted, up to a maximum of 1.35%.
- The sum of Cu, Ni, Cr, and Mo shall not exceed 1.00%.
- The sum of Cr and Mo shall not exceed 0.32%.
- The maximum carbon equivalent (C.E.) shall be 0.50, based on heat analysis and the formula C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.
Mechanical properties of ASTM A234
| Tensile Requirements | WPB | WP11CL1 | WP11CL3 |
| Tensile Strength, min, ksi[MPa] | 60-85 | 60-85 | 75-100 |
| (0.2% offset or 0.5% extension-under-load) | [415-585] | [415-585] | [520-690] |
| Yield Strength, min, ksi[MPa] | 32 | 30 | 45 |
| [240] | [205] | [310] |
An Pipe Elbow is a Pipe Fitting installed between two lengths of pipe or tubing to allow a change of direction, usually a 180° or 90° angle, though 45° elbows are also made. The ends may be machined for butt welding (BW) or socketed welding(SW) etc.
Most elbows are available in short radius or long radius variants. When the two ends differ in size, the fitting is called a Reducing Elbow or reducer elbow.
Elbows are categorized based on various design features as below:
Long Radius (LR) Elbow is also called LR Elbow – means the radius is 1.5 times the pipe diameter
L/R 45°Elbow: Long radius 45 degree elbow changes the direction by 45 degrees.
L/R 90°Elbow: Long radius 90 degree elbow changes the direction by 90 degrees.
L/R 180°Elbow: Long Radius 180 degree return bend allows complete reversal of flow.
Short Radius (SR) Elbow is also called Sr Elbow , – means the radius is 1.0 times the pipe diameter
Short radiu 45°Elbow: Short radius 45° elbow changes the direction by 45 degrees.
Short radius 90°Elbow: Short Radius 90° elbow is same as LR90 except for the measurement between end of elbow to center line is 1 x NPS.
Short radius 180° Elbow: Short Radius 180° return bend allows complete reversal of flow
Size range:
- Seamless elbow: 1/2"-24" DN15-DN600
- Welding elbow: 6"-72" DN150-DN1800
- Wall thickness: Sch5-Sch160 XXS
- External arc length of elbow
Recommended type of pipe elbows:
Product Categories : Large Diameter Steel Pipe Fitting > A234WP11 Pipe Fitting
