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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.
This seamless cap has ferrite-austenite dual-phase microstructure. Its yield strength is approximately twice that of ordinary 316L austenitic stainless steel. It has low thermal expansion coefficient, outstanding fatigue resistance and good weldability. It can keep stable performance in chloride-rich medium and hardly suffer corrosion cracking. It is used to seal the end of pipeline systems. Widely used in offshore oil & gas platforms, seawater desalination projects, chemical plants, pulp and paper industry, brine transportation and marine engineering piping. It seals the terminal of pipelines, bears fluid pressure and corrosive medium, prevents medium leakage, blocks impurities entering the pipeline, and realizes safe closure of pipe ends.
Specifications
| Material | 12Cr1MoVG、15CrMo、ASTM A234、 etc |
| Size | 1/2"~ 48"（DN15 ~ DN1200） |
| Thickness | SCH10、SCH20、SCH40、SCH80、SCH160、XXS（Double Extra Strong） |
| Pressure | Class150、Class300、Class600、Class900、Class1500、Class2500 |
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:
Send Inquiry to This Supplier
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