ZIZI ENGINEERING CO.,LTD
ZIZI ENGINEERING CO., LTD
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Best quality180 Return Bend are available in various dimensions and degrees. Based on the demands of customer, the 10" Sch 40 pipe bends are made of alloy steel ASTM A234 WP5 according to ASME B16.9. The quality is guaranteed by our skilled workers.
180 Degree Return Bend, also called U-Bend, is a pipe fitting that used to change the direction of flows. It is applied in oil and gas plants, chemical and petrochemical plants, refineries and renewable energy plants, mostly in heat exchangers. It is welded onto the pipes so that provides a joint that leak proof, stable and less possibility for corrosion.
| Size | 1/2″ to 48″ |
| Thickness | Sch 10s, 20, STD, 40S, XS, 80S, 120, 160 |
| Standard | DL/T515, SY5257, ASME B16.9 or customer’s technical drawings |
| Bend Radius | R = 3D, 4D, 5D, 6D, 7D, 8D, 9D, 10D |
| Bend Angle | 15°, 30°, 45°, 60°, 90°, 135°, 180° or at customer’s option |
| Straight Length L | Usually between 300mm and 1500mm |
| Carbon Steel | ASTM A234 WPB, A860 WPHY42, WHPY52, WPHY60, WHPY65, WPHY70 |
| Stainless Steel | ASTM A403 WP304/304L, WP304H, WP316/316L, WP310, WP317 |
| Alloy Steel | ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91 |
| Duplex Steel | ASTM A815 UNS S31803, S32205, S32550, S32750, S32760 |
| Low Temp Carbon Steel | ASTM A420 WPL3,WPL6, WPL9 |
W=0.0387 * S( D – S ) * R / 1000
W = Weight (kg/piece).
S = Thickness Schedule.
D = Nominal Diameter.
R= Radius.
ASTM A234 WP5 Chemical Composition
| C | Mn | P | S | Si | Cr | Mo |
| 0.15 | 3-6 | 0.04 | 0.03 | 0.5 | 16-18 | 0.44-0.65 |
ASTM A234 WP5 Mechanical Properties
| Tensile Strength | Yield Strength | Elongation |
| 415-585 (Mpa) | 205 (Mpa) | 20 (%) |