180 Degree Butt‑Weld Bend
Our seamless 180‑degree butt‑weld bend (U‑bend) is hot‑formed pipe fitting for 180‑degree pipeline reversal. Manufactured strictly per ASME B16.9 and IS 1239 standards, all items maintain full nominal dimension without minus tolerance, widely used for heat‑exchanger, power‑plant, petroleum and chemical pipeline circulation systems.
Overview
180‑Degree Butt‑Weld Bend also known as U‑Bend Pipe, is a seamless hot‑formed butt‑weld pipe fitting designed to turn pipeline flow 180 degrees. It is commonly applied for circulating‑loop pipelines to save installation space and change flow direction completely.
We fabricate U‑bends by integral hot‑induction bending process. Raw‑material options include carbon steel A234 WPB and stainless‑steel A403 WP304 / WP316L. Wall‑thickness stays uniform throughout the bent section, inner surface is smooth to reduce fluid resistance. We strictly control outer diameter, inner diameter and wall‑thickness, ensuring zero minus tolerance without thin‑wall cutting‑corners. Custom bend radius, wall thickness and overall lengths are available for different project requirements.
Core Key Features
- Integral seamless hot‑induction bending forming, uniform wall‑thickness, strong pressure‑bearing and anti‑fatigue performance.
- Standard long‑radius R=1.5D; custom short‑radius or extra‑long bend radius supported.
- Butt‑weld ends for full‑penetration welding, reliable sealing under high‑pressure working conditions.
- Available raw materials: Carbon Steel A234 WPB; Stainless‑Steel A403 WP304 / WP316L.
- Compliant with global standards: ASME B16.9, ASTM A234, ASTM A403, IS 1239.
- Full‑size range: DN15‑DN1200 (1/2″‑48″), Sch40, Sch80, Sch160, XXS schedule options.
- Zero minus tolerance on OD, ID and wall‑thickness, strictly follow full‑standard nominal size.
- Pass UT ultrasonic inspection and hydro‑static test before shipment, complete MTC material test certificates provided.
Technical Specification
| Item | Technical Parameter |
|---|---|
| Product Name | 180 Degree Butt‑Weld Bend / U‑Bend Pipe |
| Connection Type | Butt‑Weld (BW) |
| Production Craft | Seamless Hot Induction Bending Forming |
| Executive Standard | ASME B16.9, ASTM A234, ASTM A403, IS 1239 |
| Available Materials | Carbon Steel A234 WPB; Stainless‑Steel A403 WP304 / WP316L |
| Size Range | DN15 ~ DN1200 (1/2″ ~ 48″) |
| Bend Radius | Standard R=1.5D, Custom‑made R upon request |
| Wall Schedule | Sch40, Sch80, Sch160, XXS, Custom wall thickness |
| Structure Feature | 180‑Degree U‑shape for pipeline reversal |
| Dimensional Tolerance | Full‑standard nominal size, zero minus tolerance |
| Inspection Items | UT Ultrasonic Test, Hydrostatic Test, Full‑dimension Inspection |
| Surface Treatment | Black anti‑rust paint / Sandblasting (Carbon Steel); Pickling & Passivation (Stainless‑Steel) |
Applications
- Thermal‑power‑station boiler and heat‑exchanger circulation pipelines
- Petroleum and natural‑gas station loop piping
- Chemical‑plant heating and cooling circulating pipelines
- Off‑shore platform fluid‑circulation piping
- Food and pharmaceutical stainless‑steel heat‑exchange pipelines
- Indian IS‑1239 standard industrial and municipal pipeline projects
- Central heating system return‑loop pipelines
Why Choose Our 180 Degree Butt‑Weld Bend
- Factory direct manufacture, large stock of regular sizes with competitive ex‑works price.
- All bends are produced with full‑standard dimensions and zero minus tolerance, no thin‑wall cost‑cutting.
- Custom bend radius, wall‑thickness and surface treatment acceptable according to customer drawings.
- Strict whole‑process quality inspection, complete test documents for export customs clearance.
- Fast delivery within 7‑15 working days for standard in‑stock items.
- Export‑grade wooden‑case packaging for anti‑rust and anti‑collision during long‑sea transportation.
