180 Degree Butt Weld Bend

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.When pipeline diameter transition or branch connection is required, we also supply Seamless Concentric Butt-Weld Reducer and Weldolet Butt Weld Branch Outlet. These butt weld fittings follow ASME B16.9 standard, widely used together with 180 degree butt weld bend in oil, gas and chemical piping systems.

Overview Of 180 Degree Butt‑Weld Bend

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 Of 180 Degree Butt‑Weld Bend

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 Of 180 Degree Butt‑Weld Bend

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 RadiusStandard R=1.5D, Custom‑made R upon requestWall ScheduleSch40, Sch80, Sch160, XXS, Custom wall thicknessStructure Feature180‑Degree U‑shape for pipeline reversalDimensional ToleranceFull‑standard nominal size, zero minus toleranceInspection ItemsUT Ultrasonic Test, Hydrostatic Test, Full‑dimension InspectionSurface TreatmentBlack anti‑rust paint / Sandblasting (Carbon Steel); Pickling & Passivation (Stainless‑Steel)

Applications

Our seamless 180‑degree U‑bends are widely used for circulating‑type industrial piping systems:

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.

FAQ

Q1: What is 180‑degree U‑bend mainly used for?

A: The 180‑degree butt‑weld bend is used to reverse pipeline flow direction, widely applied for heat‑exchanger and circulating‑loop pipelines to save installation space.

Q2: Do your seamless pipe bends have minus tolerance on wall‑thickness?

A: All our seamless pipe fittings are strictly produced to full‑nominal standard dimensions. We guarantee zero minus tolerance on outer diameter and wall‑thickness, and never use thinner raw‑materials to cut costs.

Q3: Can you produce bends complying with India IS‑1239 standard?

A: Yes, we produce IS‑1239‑approved 180‑degree bends and have rich export experience for Tamil Nadu and other Indian districts.

Q4: Can you supply stainless‑steel U‑bends?

A: Sure, we provide A403 WP304 and WP316L stainless‑steel 180‑degree bends for corrosive‑medium working conditions.

Q5: What other butt weld pipe fittings can match with 180 degree U bend?

A: We also supply Reducing Butt Weld Tee, which is widely used for branch pipeline connection together with 180° butt weld bend in ASME B16.9 piping systems.