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astm a234 wpb is a common grade for 90 degree long radius elbow, which is one of the highly demanded. they available in a large size and thickness range. they have a good performance and suffices most industrial pipeline needs.
standard: asme b16.9, sh3408, hg/t21635 / 21631, sy/t0510
grade: astm a234 wpb, astm a234 wp1, wp5, wp9, wp11, wp12, wp22, wp91
diameter: dn20 to dn1500/ 3/4” to 60”
schedule: sch 20, std, 40, xs, 80, 100, 120, 160, xxs
radius: short radius (sr) and long radius (lr)
type: seamless and welded
surface: black primer, galvanized, pe coated.
a234 wpb chemical composition
grade | c | mn | p | s | si | cr | mo | ni | cu | v | nb |
wpb | 0.3 | 0.29-1.06 | 0.05 | 0.058 | 0.1min | 0.4 | 0.15 | 0.4 | 0.4 | 0.08 | 0.02 |
wpc | 0.35 | 0.29-1.06 | 0.05 | 0.058 | 0.1min | 0.4 | 0.15 | 0.4 | 0.4 | 0.08 | 0.02 |
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 | - | - | - | - |
astm a234 elbow mechanical
tensile requirements | wpb | wpc, wp11cl2 | wp11cl1 | wp11cl3 |
tensile strength, min, ksi[mpa] | 60-85 | 70-95 | 60-85 | 75-100 |
(0.2% offset or 0.5% extension-under-load) | [415-585] | [485-655] | [415-585] | [520-690] |
yield strength, min, ksi[mpa] | 32 | 40 | 30 | 45 |
[240] | [275] |
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