180 Degree Return Bends
- High-precision forming: Strict control of raw materials and forming process to ensure uniform wall thickness and accurate bend radius.
- Excellent pressure and fatigue resistance: Smooth internal surface and optimized curvature reduce turbulence and stress concentration.
- Wide material compatibility: Available in carbon steel, alloy steel, stainless steel, and special grades for high-temperature or corrosive media.
- Full product traceability: PMI testing from incoming material to finished bends, with clear heat numbers and label transfer on every piece.
Technical Specifications
| Item | Details |
| Product Name | 180 Degree Return Bends |
| Nominal Pipe Size (NPS) | 1/2″ – 48″ (larger sizes available on request) |
| Bend Radius | 1D, 1.5D, 3D, long radius or custom |
| Wall Thickness | SCH10 – SCH160, XS, XXS, or project-specific |
| Materials | Carbon steel, alloy steel, stainless steel, duplex, and other special grades |
| Manufacturing Standards | ASME B16.9 / MSS SP-75 / EN / JIS / GB (or per customer drawing) |
| End Types | Bevel ends, plain ends, or custom bevel angles |
| NDE Options | MT, PT, UT, RT, hardness, PMI, as required |
| Surface Treatment | Sand/shot blasted, anti-rust varnish, epoxy coating, or customer specified |
| Certificates | Mill test certificates, NDE reports, and traceability records |
| Delivery Time | Typically 20–35 days, depending on quantity and specification |
| Packaging | Plywood cases, pallets, or customized sea-worthy packing |
Applications
- Petrochemical plants and refineries
- Oil and gas transmission pipelines and gathering lines
- Power generation and boiler piping systems
- Offshore platforms and marine piping
- Chemical and pharmaceutical process lines
- Pulp and paper mills
- Water, seawater, and wastewater treatment plants
- HVAC and general industrial piping networks
Production Process
Our precision casting production process integrates wax modeling, automated shell making, controlled pouring, heat treatment, and machining to ensure dimensional accuracy, integrity, and quality.
Wax Injection
Shell Making
Shell Baking
Pouring
Shot Blasting
Heat Treatment
Machining
Inspection
Advanced Workshop
Advanced workshops include wax model production, CNC robotic shell making, semi-automatic pouring, baking furnaces, and machining centers supporting automation, efficiency, flexibility, and operations.
Medium Temperature Wax Workshop
Low Temperature Wax Workshop
9-axles CNC Shell-making Robot Arm Workshop
Semi-auto Pouring Machine
Baking Furnace
Horizontal CNC Machining Center
New Shell Making Automation Line
New shell making automation line optimizes reduction processes, improves production efficiency, ensures reliable equipment operation, extends running time, and significantly reduces labor intensity overall.
Shell Making Automation Line No. 01 – Small & Medium Parts
Automated shell making line for small and medium castings improves shell uniformity, reduces manual intervention, and enhances production stability and efficiency.
Shell Making Automation Line No. 02 – Large Parts
Specialized automation line supports large investment castings, handling complex geometries and higher weights while maintaining shell strength and process reliability.
Shell Making Automation Line No. 03 – Investment Casting
Optimized shell making system streamlines reduction processes, improves efficiency, ensures long-term equipment reliability, and significantly reduces labor intensity.
Quality Inspection
Comprehensive quality inspection system covering materials, processes, dimensions, and final products to ensure traceability, consistency, and full compliance with customer specifications.
Zeiss CMM Machine
X-ray Flaw Detector
100T Horizontal Tensile Testing Machine
Rockwell Hardness Standard Machine
Logistics & Delivery
Monthly Capacity: 500–1000 tons.
Packing: Wooden crates, steel frames, or per client request.
Shipment: By Sea (recommended, saves cost for forging parts) / By Air (fast but expensive).
Payment Terms: 30% deposit with balance via B/L copy; or 100% L/C at sight.
Delivery Terms: FOB, CIF, CNF.