4″ Steel Pipe 90 Degree Elbow – in industrial piping systems, it enables a 90° right-angle turn and is widely used in medium- and high-pressure transmission scenarios such as oil, natural gas, chemical, municipal water supply, fire protection, and HVAC.
Specifications of 4″ Steel Pipe 90 Degree Elbow
All the above parameters strictly follow the international 90 degree steel pipe elbow dimensions standards, ensuring precise compatibility with piping systems. For wall thickness and pressure requirements, the schedule 40 90 degree elbow steel is the optimal choice under normal operating conditions, balancing economy and safety.
Main application areas of the 4″ schedule 40 steel pipe 90 degree elbow:
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Oil & natural gas transmission: used in surface gathering lines, station process piping, adapting to terrain changes.
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Chemical & pharmaceutical: conveying corrosive or high-temperature media (stainless steel or alloy materials required).
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Municipal water supply & drainage and fire protection: achieving pipeline turns in building main risers and fire sprinkler systems.
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Power & HVAC: used in steam, condensate, and cooling water circulation piping.
Typical application case: In the fire sprinkler system main pipeline renovation project of Shanghai Pudong Red Star Macalline Home Furnishings & Building Materials Plaza, a large number of 4″ schedule 40 steel pipe 90 degree elbows were adopted. The project required the elbows to withstand no less than 1.6MPa and to meet the GB 5135.11-2006 fire protection standard. The precise 90 degree steel pipe elbow dimensions (center-to-end dimension of 152mm, conforming to ASME B16.9 LR standard) and uniform wall thickness passed hydrostatic testing and fire safety inspections, and have been operating well to date, fully verifying the reliability and long service life of the 4″ 90 degree elbow steel.
In addition, in industrial steam tracing lines, compressed air pipe networks, and marine piping systems, this elbow also demonstrates excellent fatigue resistance and vibration resistance.
Manufacturing process and quality control
We produce the schedule 40 90 degree elbow steel using cold bending or hot push-forming processes, ensuring that wall thickness reduction is controlled within the allowable standard range. Each batch undergoes chemical composition analysis, mechanical property testing, non-destructive testing (MT/UT), and dimensional inspection, and is supplied with complete MTR (Material Test Report). All products comply with ASTM A234, ASME B16.9, and ISO 9001 quality management system requirements.
Export packaging for 4″ steel pipe 90 degree elbow
To suit international sea freight and long-distance transport, we adopt the following standard export packaging:
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Individual protection: plastic caps or rust-preventive paper seals are fitted on both pipe ends to prevent foreign matter ingress and end surface damage.
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Rust prevention: the outer surface is coated with rust-preventive oil or peelable anti-rust coating, and wrapped with waterproof plastic film as required.
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Packing method: each carton/pallet is accompanied by a detailed packing list, material certificates, and product labels.
Why choose our 4″ steel elbows?
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Precise dimensions: strictly in accordance with international 90 degree steel pipe elbow dimensions standards, ensuring perfect interface with piping.
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Sufficient stock: regular inventory of 4″ schedule 40 steel pipe 90 degree elbow available for fast delivery.
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Customizable: supports non-standard wall thickness, special materials (e.g., low-temperature steel, alloy steel), coatings, and end finishing.
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Full traceability: from steelmaking to finished product, every batch is traceable, meeting engineering acceptance requirements.
