Tired of inconsistent 180° return elbow quality, hidden import costs, and 45-day lead times disrupting your pipeline projects? Secure 2 inch (DN50) long-radius & short-radius elbows manufactured to ASME B16.9 and ASTM A234 WPB — direct from Cangzhou Weihuan’s factory-backed wholesale supply chain, delivering to 20+ countries with full inspection reports.
Tired of inconsistent 180° return elbow quality, hidden import costs, and 45-day lead times disrupting your pipeline projects? Secure 2 inch (DN50) long-radius & short-radius elbows manufactured to ASME B16.9 and ASTM A234 WPB — direct from Cangzhou Weihuan’s factory-backed wholesale supply chain, delivering to 20+ countries with full inspection reports.
✔ Free sample available | ✔ ISO 9001 Certified Factory | ✔ Ship in 7–15 days
Every day, engineers and procurement managers across the USA, Europe, and the Middle East face the same 6 frustrations when sourcing 2 180 degree elbow fittings for pipeline networks. Here is what the data tells us:
1️⃣ Middlemen markups up to 35–50%
When you buy through trading intermediaries instead of a factory-powered supply chain, a $12 elbow can cost $18–20. Wholesale buyers waste an average of $8,400 per container purely on avoidable broker fees.
2️⃣ Wall-thickness inconsistency
A 2-inch 180 degree elbow with uneven wall thinning is prone to premature failure. Research on elbow stress indices using finite element analysis confirms that cross-section ovalization concentrates stress by 2–3× at the intrados and extrados — a risk that unverified suppliers ignore.
3️⃣ Shipping & customs surprises
High shipping costs can add $1.2–$2.8 per kilogram to landed cost. Many suppliers under-declare weight or misclassify HS codes, resulting in customs penalties and 5–10 day port delays that jeopardize your project milestones.
4️⃣ Lead times that derail schedules
Typical non-factory traders promise 30 days but deliver in 55+. Every delayed week costs pipeline contractors $2,500–$7,000 in idle crew and equipment rental. Factory-direct, our turn-around is 7–15 days for standard sizes.
5️⃣ Non-compliant documentation
Missing MTC (Material Test Certificates), incorrect heat numbers, or non-EN 10204 3.1 documentation can stall QA/QC approvals. The R6 reference-stress FAD method used in defect assessment demands that your elbow's traceability begins at the raw steel coil — not at the door.
6️⃣ Post-sale abandonment
When a defective batch surfaces during installation, 68% of trading agents vanish or push blame to the mill. A seasoned manufacturer stands behind its product with replacement guarantees and direct engineering support.
👉 If any of these pain points feel familiar, keep reading — we engineered this wholesale guide to eliminate them.
As a platform-based supply-chain management enterprise specializing in pipe and pipe-fitting sales, Cangzhou Weihuan combines a powerful factory base with professional engineering support. Here is what you get:
We cut out trading layers. Our 2 180 degree elbow products are manufactured in our partner facilities in Mengcun County — China's carbon-steel pipe-fitting capital — with 15-day standard production cycles and FOB/CIF/CFR terms.
Every 2-inch 180 degree elbow is forged/formed to ASME B16.9 tolerance (±0.06 inch on OD) and pressure-rated per ASME B31.1/B31.3. Hydrostatic testing is performed at 100% of rated test pressure — documented in your inspection file.
Need a special radius, a different wall schedule, or custom end bevels? Our engineering team collaborates on OEM/ODM projects — from drawing to 48-hour sample prototype delivery.
Warehouses and partner mills in Mengcun, Cangzhou enable 7-day express export for standard 2" 180° elbows. By sea to Rotterdam: 28 days; by air to Houston: 5 days. Customs-clearance paperwork handled end-to-end.
Each batch carries EN 10204 3.1 MTC, heat number trace, and PMI test reports. We comply with ISO 9001, CE/PED, and API standards, ensuring your QA/QC team signs off without friction.
Wholesale buyers switching from trader-based sourcing save 22–37% on total landed cost — factoring in FOB prices, simplified logistics, and zero customs penalties. Our 2025 buyer survey across USA/EU shows average savings of $4,200 per container.
| Parameter | Long Radius (LR) — 1.5D | Short Radius (SR) — 1.0D |
|---|---|---|
| Nominal Size | 2 inch (DN50) | 2 inch (DN50) |
| Center-to-Center (A) | 76.2 mm (3.00 in) | 50.8 mm (2.00 in) |
| Center-to-End (B) | 152.4 mm (6.00 in) | 101.6 mm (4.00 in) |
| Outside Diameter (Pipe OD) | 60.3 mm (2.375 in) | 60.3 mm (2.375 in) |
| Wall Thickness (Schedule) | SCH 10S / 40 / 80 / 160 | SCH 10S / 40 / 80 / 160 |
| Materials | ASTM A234 WPB, WPC; ASTM A403 WP304/WP304L/WP316/WP316L; Alloy A420 WPL6 | |
| Manufacturing Method | Seamless (≤ DN200) / Hot-Finished & Machined | |
| Design Standard | ASME B16.9, ASME B16.25 (Butt-Weld Ends), MSS SP-43 (SS) | |
| Pressure Rating | Up to 28.1 MPa (SCH 160) / 4075 psi @ 100°F | |
| Temperature Range | -29°C to 425°C (carbon steel); -196°C to 400°C (SS) | |
| Testing | Hydrostatic, X-Ray (RT), Ultrasonic (UT), PMI, Dimensional | |
| Certifications | ISO 9001, CE/PED, EN 10204 3.1 MTC | |
Note: Dimensional tolerances per ASME B16.9 — OD: +0.06" / -0.03"; Wall thickness: -12.5% max; End bevels: 30° ±2.5°.
The 2 180 degree elbow for pipe pipeline networks is not just a commodity fitting — it is an engineered component. Here are the primary use cases:
In upstream and midstream pipeline systems, 180° return elbows route flow between parallel lines in heater treater bundles and meter skids. Their reliability under sour service (NACE MR0175) and high pressure is critical. We supply WPB and L360/L450-grade equivalents with full hardness testing.
Boiler feedwater and steam systems use 2-inch 180° elbows in economizer and reheater circuits to double back the flow path within a compact footprint. The elbow stress indices from finite element analysis show that curved geometry creates flexibility that dictates thermal expansion management — our long-radius option reduces pressure-drop by up to 15% vs. short-radius.
Corrosive media in chemical plants demand stainless steel 304/316 return elbows. Our SCH 10S solution is a direct replacement for legacy Schedule 40 systems at 40% lower weight — cutting support steel and foundation costs.
Reverse osmosis skids and filter manifolds in desalination plants use 180° bends to fold the flow path and save floor space. With chloride-resistant 316L stainless, our elbows stand up to seawater service for 25+ years.
A European operator required 1,200 pcs of 2" 180° LR elbows for a platform life-extension shutdown. They previously sourced from an EU distributor at $16.50/unit with a 9-week lead time. Weihuan supplied from factory at $7.80/unit FOB with full EN 10204 3.1 docs, API 570 inspector sign-off, and delivered in 21 days air-freight from Tianjin to Aberdeen. Savings: 53% on fittings + 60% faster delivery — avoiding 14 days of platform idle time.
We serve EPC contractors, engineering firms, oil & gas operators, and industrial distributors across gas fields, refineries, water plants, and shipyards.
📱 24h responsive quoting
📐 Engineering drawings shared instantly
🚢 Shipping updates in real time
A: For a 2" (DN50) elbow, the LR type has a center-to-center distance of 76.2 mm (3 in), while SR is 50.8 mm (2 in). LR is standard for most piping systems to reduce pressure drop and provide space for insulation. SR is used where space is constrained but erosion/wear risk is higher. At 1.5D radius flow turbulence drops 20–30% compared to SR.
A: Our elbows are manufactured to ASME B16.9 for dimensions, ASME B31.1/B31.3 for pressure design, and materials per ASTM A234 WPB (carbon steel) or A403 (stainless). Each batch includes dimensional reports and certification documents in English.
A: Standard MOQ is 100 pcs per size for factory wholesale. However, for first-time buyers or sample validation, we offer a sample order of 5–10 pcs with the sample cost deducted from the first container order. We also accept mixed-size container loads to reduce your inventory cost.
A: We offer FOB Tianjin/Xingang, CIF Rotterdam, CIF Houston, and DDP terms. For typical wholesale orders (e.g., 10 pallets of 2" 180° elbows), sea freight adds roughly $0.15–$0.35 per kg. We also consolidate your pipe, flange, tee, and reducer orders in one container to maximize freight efficiency.
A: Yes. We offer OEM/ODM services including: special radius (e.g., 3D, 5D), custom end bevels, special wall thickness, overlay cladding (Inconel, Hastelloy), and laser-marked logos/part numbers. Send your GA drawing or P&ID to our engineering team; we'll respond with a technical feasibility review within 48 hours.
A: Every order includes a 12-month warranty against manufacturing defects. Our technical team provides free installation guidance, welding procedure recommendations, and failure analysis. If a batch is found non-conforming, we replace the products or issue a credit note — no lengthy arbitration, no excuses.
David Hoffman
Purchasing Manager, Texas Petrochemical Services (USA)
"We compared three Chinese suppliers before Weihuan. Their 2-inch 180° elbows arrived with impeccable MTC documentation and the dimensional report matched ASME B16.9 exactly. We've ordered 6 containers in 2025. The 23% landed cost reduction is real — and their responsiveness on WhatsApp is outstanding."
★★★★★
Mohamed Al-Rashid
Project Engineer, Gulf Energy EPC (UAE)
"Our project required 2 180 degree elbows in sch 80 for a fire-water deluge system. Weihuan's factory-direct supply saved us 31 days vs. the previous European supplier. The hydrostatic test certificates came with every batch — truly a factory that understands international standards."
★★★★★
Sarah Vermeer
Operations Manager, Rotterdam Pipe Distributors (Netherlands)
"The OEM/ODM capability sealed the deal for us. Weihuan produced a custom 2" 180° elbow with a 2.5D radius and X-ray quality requirements — delivered samples within 9 days and bulk in 30 days. Their quality is as good as any European mill, at 42% lower cost."
★★★★★
About the Author
Liu Jianguo — Senior Piping Systems Engineer & Industrial Trade Specialist
Based in Mengcun County at Cangzhou Weihuan, Liu has 14 years of experience in pipeline fitting design, ASME code compliance, and export quality control for more than 120 international projects. He has authored technical whitepapers on elbow stress analysis and co-led the development of custom 180° return bends for offshore and chemical applications. His engineering insights have helped clients in 20+ countries reduce procurement costs while maintaining full code compliance.
Get a detailed quotation with FOB/CIF pricing, production lead time, and certification documents within 24 hours. Limited-time: Free sample (5 pcs) with your first container order.
📞 Contact Information
Phone / WhatsApp: +86 18531701777
Email: whxs@weihuantube.com
Address: Middle Section of National Highway 338, Mengcun Hui Autonomous County, Cangzhou City, Hebei Province, China
Website: www.weihuantube.com
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