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Hebei Zuoguan Pipeline Equipment Co., Ltd. is an export-focused one-stop supplier specializing in pipeline accessories and industrial piping solutions. We own independent brands and serve clients worldwide in oil & gas, petrochemical, power, water supply and industrial construction sectors.
Based in Cangzhou, Hebei — China’s key pipeline equipment manufacturing hub, we cooperate with qualified certified factories with ISO9001, CE, API certifications. We supply flanges, pipe fittings, valves, steel pipes and related pipeline parts with cost-effective prices, stable quality and fast delivery.
We conduct full-process quality control and provide complete test reports and export documents. With rich export experience, we have built long-term partnerships with clients from over 60 countries, offering reliable products and professional all-round trade services.
Made of high-quality 16Mn alloy steel and manufactured strictly according to GB/T 9113 standard, this weld neck flange possesses superior mechanical properties including high structural strength, strong pressure resistance and outstanding low-temperature toughness, which can stably operate under medium and high-pressure pipeline conditions. The unique long neck design effectively reduces welding stress, ensures uniform welding penetration and firm connection without deformation. The sealing surface is finely machined with flat and smooth finish to achieve excellent sealing effect and prevent medium leakage. It features great wear resistance and moderate corrosion resistance, resisting damage from oil, gas and general chemical media, extending long-term service life. Complete standard sizes with precise dimensional tolerance, easy matching with alloy steel pipes, widely applicable to petrochemical, power, metallurgy and natural gas transmission pipelines.
Specifications
| Material | Forged Carbon Steel (A105/A105N/A234),etc. |
| Standard | ASME B16.5,DIN,GOST,EN |
| Pressure Rating | Class 150-Class 2000 etc. |
| Face Type | RF FF RTJ |
We support standard, special-shaped & drawing customization. Send us your requirements, we can provide professional drawings accordingly.
our product overview：
•Flanges: Weld Neck (WN), Slip On (SO), Plate (PL), Blind (BL), Socket Weld (SW), Threaded, Lap Joint, Ring Type Joint (RTJ) Flange
•Pipe Fittings: 90°/45° Elbow (LR/SR), Equal/Reducing Tee, Concentric/Eccentric Reducer, Cap, Stub End
Materials & Standards：
•Materials: Carbon Steel (A105, A234 WPB), Stainless Steel (304, 316L), Alloy Steel, Duplex & Super Duplex (F51, F53)
•Standards: ANSI/ASME B16.5, ASME B16.9, EN 1092-1, JIS B2220, DIN 2501, GOST 12820, GB/T 9119
•Pressure & Wall Thickness: Class 150-2500, PN20-PN420, SCH40/SCH80/SCH120/SCH160/XXS
Our Advantages：
•✅ Factory direct price, no middleman, competitive quotation
•✅ Strict quality control, full NDT test (UT/RT/MT/PT) and Mill Test Certificate (MTC) available
•✅ Fast delivery: 15-25 working days after deposit
•✅ Customized size, material and standard according to customer requirements
•✅ Rich export experience, serving 60+ countries worldwide
We adhere to the principle of "quality first, customer foremost" and look forward to establishing long-term and stable cooperative relationships with customers around the world. Contact us now for the best quotation!
If you have any inquiry about pipe flanges or pipe fittings, please contact us directly — we will reply within 24 hours with our best offer!
📱 WhatsApp: +8615832782018
📩 Email: sales@flangepipefittings.com
🌐 Website:
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