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In-house butt-weld carbon steel elbows - 1/2″ to 48″ OD, produced without subcontracting. Push-formed and hot-formed on Baode's own production floor, ready for oil & gas, power, petrochemical and municipal piping systems.
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Technical Specifications
| Specifications | Full Dimension Table | Purchase & Logistics |
| Material Standard | ASTM A234 WPB (20# carbon steel also available) |
| Dimensional Standard | ASME B16.9 (long radius); ASME B16.28 (short radius) |
| Angle | 45° / 90° / 180° standard; special angles (e.g. 60°) on request |
| Radius | Long Radius – LR (1.5D); Short Radius – SR (1.0D) |
| Connection | Butt Welded (BW) |
| Outer Diameter Range | 1/2″–24″ (seamless); 18″–48″ (welded) |
| Wall Thickness Range | 2mm–60mm |
| Nominal Pressure | Approx. 1.0–1.6 MPa at standard-duty sizing (Class 150 equivalent); rating follows the mating pipe schedule / ASME B16.5 flange class up to Class 2500 on request |
| Surface Finish | Black (as-formed) standard; hot-dip galvanizing, epoxy coating and fusion-bonded powder coating available on request |
| Applicable Media | Oil, gas, steam, water and general non-corrosive process fluids within standard carbon steel service limits; sour service (NACE MR0175) or highly corrosive media require a material grade change |
Why Choose This Elbow
Dual Forming Process Under One RoofIn-house push-forming machines cover 3″–24″ elbows while hydraulic pressing lines handle 1/2″–3″, so full-range orders come off one factory floor instead of being split between subcontractors. That keeps every size on a single QC chain and a single lead time. See our full carbon steel elbow range for related configurations. |
Long Radius Geometry Lowers Pumping CostThe 1.5D long radius reduces flow resistance compared with a 1.0D short radius bend of the same nominal size, which lowers pumping energy on continuous-duty transmission lines. Short radius (1.0D) stays available on the same tooling for layouts where space, not flow, is the constraint. |
Heavy-Wall Range Covers Standard Through Heavy ScheduleWall thickness from 2mm to 60mm lets one material order cover both light-schedule utility piping and heavy-wall pressure sections, without switching suppliers mid-project. |
Two Material Grades, One OrderElbows are produced in ASTM A234 WPB and domestic 20# carbon steel. Buyers working to a GB-based drawing and buyers working to an ASME-based drawing can both be filled from the same production line, without a separate tooling change-over. |
Click to Compare: Long Radius vs Short Radius
| Long Radius – LR (1.5D) | Short Radius – SR (1.0D) |
| Bend radius | 1.5 × nominal diameter (1.5D) |
| Flow resistance | Lower - smoother direction change, less turbulence |
| Best fit | Continuous-duty transmission lines, pump suction/discharge runs |
| Governing standard | ASME B16.9 |
Available Configurations & Customization
| Comparison Item | Customization Scope | Standard on This Page |
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| Angle | 45° / 90° / 180° / other special angles | 45° / 90° / 180° |
| Radius | SR (1.0D) / LR (1.5D) | Confirm at inquiry |
| Size / Wall Thickness | 1/2″–48″ OD, 2mm–60mm WT | Confirm exact size at inquiry |
| Surface Treatment | Hot-dip galvanizing / epoxy coating / powder coating | Black (as-formed) |
Application Scenarios
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Oil & Gas PipelinesLong-distance gathering and transmission lines need direction-change fittings that hold up under pressure cycling and weld stress. The 1.5D long radius geometry in ASTM A234 WPB keeps flow resistance and turbulence low at pipeline bends. Power Plant Steam PipingSteam and process piping runs continuously under thermal cycling. The heavy-wall option (up to 60mm) supports higher-pressure schedule requirements on these systems. |
Petrochemical ProcessingProcess units route piping through tight equipment layouts. Butt-welded elbows provide a full-penetration joint suited to the repeated inspection cycles process plants require. |
Municipal Gas & Water DistributionUrban gas and water networks favor standardized ASME B16.9 fittings for interoperability across contractors. In-stock standard sizes support fast project rollout on municipal timelines. |
Shipbuilding Piping SystemsOnboard piping needs fittings that meet recognized dimensional standards for classification-society review. ASME B16.9 compliance simplifies documentation during vessel piping inspection. |
OEM / ODM Service Process
Custom angles, radii and sizes within our production range can be produced against buyer drawings, packed under buyer branding on request. Visit our service page for the full scope of factory capabilities.
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Requirement & Drawing Discussion |
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Spec & Material Confirmation |
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Sample Production |
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Batch Production |
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QC & Shipment |
OEM branding MOQ is typically 50–100 pieces depending on size, with sample lead time around 7–10 days.
Factory Strength & Certification
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Baode Steel operates 3 elbow push-forming machines and dedicated tooling for 1/2″–24″ seamless and slotted elbow production, alongside 6 tee-forming lines and 10 press machines for reducers and caps. Full certificate copies are available on our certificate page to support customs clearance documentation.
| Certificate | Standard | Certificate No. | Valid Until |
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| ISO 9001:2015 (Quality) | GB/T 19001-2016 / ISO 9001:2015 | 1952024Q0837R0S | Sep 09, 2027 |
| ISO 14001:2015 (Environmental) | GB/T 24001-2016 / ISO 14001:2015 | 1952024E0437R0S | Sep 09, 2027 |
| ISO 45001:2018 (Occupational Health & Safety) | GB/T 45001-2020 / ISO 45001:2018 | 1952024S0379R0S | Sep 09, 2027 |
Also holds AAA Credit Enterprise rating; additional executed standards such as API 5L available on request.
Quality Control Process
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Raw Material Check Incoming material verified against ASTM A234 WPB / 20# chemistry before forming. |
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Dimensional Inspection Wall thickness and OD checked at forming stage against the NPS/DN table. |
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NDT (UT/RT) Random ultrasonic testing on weld seams per ASME B16.9 practice; full UT/RT available on request. |
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Pressure Test Hydrostatic test at 1.5× rated working pressure before packing; per-batch test record available on request |
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Pre-Shipment Check Dimensions, marking and packing verified against the order sheet before container loading. |
Logistics & After-Sales
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Shipping & Packing Small items ship in wooden boxes; larger items on wooden pallets. A 20GP container holds about 20 boxes (18–22 tons); a 40HQ holds about 40 boxes (26–28 tons). Standard lead time is 15 days, extending up to 30 days in peak season. |
After-Sales Support 1-year warranty, excluding damage from improper operation or improper installation. Sales and technical team responds to after-sales requests within 24 business hours. Contact our team for shipment tracking or spare-part support. |
Frequently Asked Questions
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Need a Quote or Sizing Help for Your Project? Tell us your size, angle and quantity - our sales team will confirm lead time and pricing. Send Inquiry Contact Us |
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