SS304 90 Degree Union Street Elbow
2.Integral union live‑joint structure, easy disassembly for quick inspection and repair .
3.High‑precision BSPT / NPT male‑female threads, tight fit and excellent leak‑proof sealing .
4.90‑degree elbow layout, ideal for pipeline steering and angle transition installation .
5.Smooth polished surface without sand holes, cracks or burrs .
6.One‑piece forging construction, uniform wall thickness for long‑term stable service .
7.Class150 pressure rating, suitable for water, gas, oil and mild chemical media .
8.Widely applied in plumbing, heating, pneumatic and outdoor humid pipeline systems
Description
304 Stainless Steel 90° Male‑Female Union Elbow
Engineered for reliable 90‑degree angle‑change of pipeline, our ASTM SS304 90° male‑female union elbow serves as premium threaded fitting for water, oil and gas piping systems. It adopts built‑in union live‑joint structure for easy disassembly and convenient on‑site maintenance. Precision‑machined BSPT / NPT male‑female threads realize leak‑proof threaded sealing and simplify on‑site pipeline turning installation. Manufactured from standard 304 stainless steel with smooth surface, the fitting delivers outstanding rust and corrosion resistance. Unique union‑elbow integrated design realizes 90‑degree pipeline turning connection. It maintains stable sealing performance under long‑term working conditions. Optional polishing surface finishing improves appearance quality and extends service life for indoor and outdoor piping projects. Regular stocked specifications cover mainstream pipe sizes for fast bulk shipment. Custom thread types, OEM laser logo engraving and special‑size machining services are available upon request. These 304 stainless steel 90° union elbows are widely applied in plumbing systems, heating networks, gas pipelines, irrigation, petrochemical and general industrial piping facilities.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | 304 Stainless Steel Street Elbow Union Pipe Fitting |
| Pressure Class | Medium‑High Pressure Grade |
| Raw Material | ASTM‑compliant SS304 stainless steel with compact uniform microstructure, excellent rust‑proof and anticorrosion performance |
| Surface Finish | Optional mirror polishing / matte treatment; smooth surface without burrs |
| Connection Type | BSPT / NPT male‑female thread connection; precisely machined threads for tight‑fitting, reliable leak‑proof sealing performance, union design for easy disassembly and maintenance |
| Working Temperature | -20℃ ~ 120℃ |
| Applicable Medium | Drinking water, heating circulating water, neutral industrial fluids, oil and gas media |
| Certification Standard | Produced following international standards for stainless steel threaded pipe components |
| Application Scenario | Pipeline direction turning, plumbing systems, heating networks, gas pipelines, irrigation, petrochemical facilities, industrial equipment, general piping projects；Union structure facilitates pipeline assembly, disassembly and repair work |
Key Features
1.Superior Environmental Adaptability
Forged from ASTM‑certified 304 stainless steel, this street elbow union withstands humid coastal atmosphere, domestic water and weakly corrosive liquids. It keeps stable performance in outdoor piping and general industrial working environments for long‑term service life.
2.Reliable Thread Sealing Performance
Precision‑machined BSPT / NPT male‑female threads ensure tight thread‑to‑thread engagement. Combined with union face‑to‑face sealing structure, good sealing effect can be achieved with proper thread sealant, effectively preventing medium seepage under long‑term pressurized operation.
3.Union Elbow Structure for Easy Disassembly & Pipeline Turning
Elbow‑shape plus union live‑joint design realizes pipeline turning connection. Standard thread size matches common pipe fittings perfectly. The union structure allows quick disassembly for pipeline maintenance and cleaning, simplifies on‑site piping installation operation and shortens construction period.
4.Thick‑wall Body Ensures Structural Stability
Thick‑wall elbow body guarantees pressure‑bearing capacity. Compact forging structure resists deformation under pressure, delivers reliable mechanical performance for pipeline turning work.
5.Diversified Scenarios & Flexible Customization
Suitable for pipeline direction turning, plumbing systems, heating systems, gas pipelines, irrigation, petrochemical and general industrial piping projects. Conventional sizes are stocked for bulk orders; customized wall thickness, laser marking and non‑standard dimension processing are supported for OEM cooperation.
Dimensions and Specifications
Our 304 stainless steel street elbow union cover a full range of standard inch sizes, mainstream specifications are listed below:
- 1/2", 3/4", 1", 1‑1/4", 1‑1/2", 2"
- Custom dimensions, OEM laser marking and dedicated export packaging services are available
Each fitting is manufactured under strict dimensional tolerance management. Its precision‑machined BSPT / NPT male‑female thread plus union face‑seal structure matches standard threaded counterparts to sustain stable sealing performance, effectively preventing medium leakage during long‑term operation in diverse working scenarios. The union joint enables convenient disassembly, maintenance and pipeline cleaning.
Materials and Surface Treatments
1.Main Body Raw Material
Fabricated from ASTM‑compliant SS304 stainless steel, the street elbow union delivers outstanding rust and corrosion resistance against water, oil, gas and weak acidic media. It operates stably in food processing, chemical production, water treatment and marine piping systems for pipeline turning connection.
2.Surface Finish
Standard pickling and passivation treatment forms a compact passive anticorrosive film to isolate rust, moisture and mild chemical erosion, supporting reliable use for indoor and outdoor industrial pipelines. Two surface options are available as requested: natural matte finish and mirror polishing finish.
3.Connection Processing
Adopt precision‑machined BSPT / NPT male‑female threads with accurate thread pitch and tooth profile for smooth mating with standard threaded fittings. Combined with union face‑to‑face sealing design; proper thread sealant auxiliary ensures stable leak‑proof performance for pipeline turning service.
Standards and Certifications
Our products are manufactured in strict accordance with global industrial quality norms:
- Fabricated following official process specifications for stainless steel threaded pipe fittings
- Production system certified to ISO 9001 quality management standards
Prior to packaging and shipment, every 304 stainless steel street elbow union undergoes comprehensive testing. Inspection items include sealing reliability (union face‑seal & thread sealing), thread dimensional accuracy and anticorrosion performance.
Applications
1.Petrochemical & Industrial Pipeline
Our 304 stainless steel street elbow union work steadily in factory piping systems for water, gas, oil and low‑corrosion fluid transmission. They realize pipeline direction change; thanks to union joint design, it simplifies later equipment maintenance and pipeline disassembling & upgrading.
2.Shipbuilding & Marine Pipeline Systems
Commonly used for offshore domestic water supply, fuel delivery and heating pipe networks. Outstanding anti‑rust and salt‑spray resistant performance enables stable operation in damp, corrosive marine environments for pipeline direction turning.
3.Food & Water Treatment Piping
Ideal for drinking water projects, beverage production lines and water treatment piping systems. 304 stainless steel meets high hygiene requirements and will not cause secondary pollution to transported media for safe pipeline transition.
4.Heating & General Industrial Fluid Delivery
Suitable for central heating circulation pipelines, compressed air pipelines and various industrial fluid conveying lines. Standard threaded plus union connection is easy to disassemble, greatly improving efficiency during daily system maintenance and pipeline reconstruction.
Installation Instructions
- Thread Pre‑treatment: Clean the BSPP/NPT threaded sections and matching pipe threads; remove rust, oil stains and burrs before assembly. Also clean the union face‑sealing surfaces to avoid particle debris causing leakage.
- Controlled Torque Fastening: Tighten the fitting with appropriate torque. Avoid excessive tightening to prevent thread deformation and damage to thread & union sealing surfaces.
- Pressure Leak Test: Conduct pressure testing after installation to confirm reliable sealing of both threaded joints and union face‑seal.
- Periodic Inspection: Inspect threaded connections and union joints regularly to guarantee long‑term safe operation of the piping system.
Comply with industrial threaded piping specifications and local safety regulations during installation.
Packaging and Shipping
Every 304 stainless steel street elbow union is wrapped with anti‑collision protective film to prevent surface scratches during transit. Moisture‑proof packaging protects the pickled passivated surface. Bulk orders are palletized with export‑standard pallets for convenient handling and container loading.
Our factory is located in Taigu, Shanxi Province. We cooperate with seasoned global logistics networks covering main overseas ports, providing steady and cost‑effective bulk shipment services for industrial piping projects across the world.
Quality Control
1.Raw Material Spectral Composition & Mechanical Test
Every batch of ASTM SS304 stainless steel raw material undergoes full spectral analysis and mechanical property testing, to meet the official technical standards for stainless steel pipe fittings.
2.Hydraulic Sealing Pressure Inspection
Finished 304 stainless steel street elbow union are randomly sampled for hydraulic sealing tests under rated working pressure, to confirm zero‑leakage performance of both threaded connection and union face‑sealing surfaces.
3.Thread Dimension Precision Calibration
Special go‑no‑go gauges are used to check thread pitch, thread diameter and tolerance. This guarantees tight matching with standard NPT/BSPT threads and stable sealing after assembly.
4.Full Surface Visual Defect Screening
After pickling and passivation, all products go through 100% manual visual inspection. Workers remove burrs, stains and surface imperfections on threads, union sealing faces and outer shells, so the fittings can maintain reliable corrosion resistance during long‑term use.
OEM and Customization Services
We maintain stable annual production capacity and accept bulk OEM & ODM custom orders. Our professional engineering team provides one‑stop customized solutions for various industrial pipeline projects, including customized wall thickness, non‑standard dimensions, laser‑engraved brand logos and dedicated export packaging. We own a complete set of molds covering sizes from 1/2 inch to 4 inches, which can effectively shorten the lead time for sample trial production and mass delivery.
FAQ
Q:Can this 304 stainless steel street elbow union be buried underground?
A: Outer anti‑corrosion treatment must be carried out before buried installation. Direct burial without protective measures will greatly shorten the service life of the fitting. We can provide customized anti‑corrosion schemes upon your demand.
Q: What is the standard installation method for this 304 stainless steel street elbow union?
A: Clean the thread and union face‑sealing surface thoroughly first. Apply suitable thread sealant or PTFE tape, then tighten manually with standard pipe wrenches according to torque requirements. Do not over‑tighten to avoid thread & sealing‑face damage, achieving stable long‑term leak‑free connection.
Q: Can it withstand pipeline thermal expansion?
A: The fitting belongs to rigid connecting parts. For long‑distance pipelines with obvious temperature changes, it is suggested to install expansion joints to offset stress caused by thermal deformation.
Q:Is it compatible with different steel pipes?
A:Fits standard NPT / BSPT threaded steel pipes. Please confirm thread specification before ordering.
Q:Why pick 304 stainless steel street elbow union rather than carbon steel ones?
A:ASTM 304 stainless steel features outstanding rust and corrosion resistance for water, oil, gas and weak acid media. The union design enables quick assembly and disassembly for pipeline maintenance, suitable for piping systems in food processing, water treatment, marine engineering and corrosive medium scenarios.
Contact Us
Searching for reliable 304 stainless steel street elbow union to support your industrial piping projects? Our experienced technical team provides full‑process product selection guidance and comprehensive technical support..Email:q1236800000@gmail.com We are able to supply complete official technical datasheets, cost‑effective bulk wholesale quotations and stable delivery schedules. Our high‑grade 304 stainless steel threaded fittings are widely delivered to global projects covering food processing, water treatment, petrochemical industry, shipbuildings and heating pipeline systems.
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