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China, Chinese Plug Oil Pipeline Plug 2-7/8" Geological Mining Pipeline Plug1 Industrial Products Supplier Manufacturer Details, price list catalog:
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Other Tools HardwareHardware PlugsPipe Fittings
Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
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Product DescriptionProduct IntroductionStructure and Material1. Structural design: It is usually a cylindrical thread structure, divided into male and female threads, which are precisely matched with oil pipe threads.2. Material selection: Alloy steel, stainless steel or carbon steel are commonly used, with nickel/zinc plating on the surface to enhance corrosion resistance, suitable for high-pressure and high-temperature environments.Core functions1. Sealing: Through the dual action of thread engagement and sealing rubber ring, zero leakage sealing of pipeline ports is achieved.2. Protection: prevent impurities from entering the pipeline and protect internal equipment from contamination.Application scenarios1. Temporary sealing during drilling and completion2. Isolation for pipeline maintenance or segmented testing3. Anti corrosion protection for pipelines that have been out of service for a long timeIndustry standardsMust comply with the thread accuracy and pressure requirements of API 5CT or GB/T 9253.4.Tubing & casing couplingspup jointTubing converterThe oil pipe coupling is a method of connecting two oil pipes through internal and external threads. All types of oil pipe joints have internal threads, which are called internal thread forms. These thread forms are usually machined so that they can be connected to the external threads of the pipe, which are called external thread forms.The oil pipe joint is strictly designed in accordance with the API 5CT specification. There are two types of pipe joints widely used in the pipe joint manufacturing industry, namely:Non-upsetting pipe jointExternal thickened pipe jointOil and casing short sections are produced and processed in accordance with the "API SPEC 5CT Specification", and the materials include steel grades such as J55, K55, N80, N80-1, N80-Q, L80, P110, etc. Oil and casing couplings include two types: flat type and externally thickened type. Its thread processing is completed in one go by using CNC lathes and imported forming tools, ensuring the universality and interchangeability of the threads. The detection means are complete. A full set of thread single-item measuring instruments including taper, pitch, tooth height and thread profile are adopted. The products have passed the appraisal of the Petroleum Pipe Quality Supervision and Inspection and Testing Center of China National Petroleum Corporation.The Adapter Sub/Crossover Sub is a key connection component in the field of oil drilling and production. It is used to convert the threaded interfaces of tubing/casing of different specifications and types, solving the connection problems caused by the mismatch of thread type, size or thickening form between pipe strings. ?Youdaoplaceholder0 EU (outer thickened) ? NU (flat type) ? : EU buckle 8 buckle per inch with thickened pipe end, NU buckle 10 buckle per inch without thickening. ?Youdaoplaceholder0 Special thread conversion ? : such as VAM series (rectangular thread), HYD PH-6/CS and other high-pressure gas sealing thread types, suitable for high-temperature and high-pressure gas Wells. ?Youdaoplaceholder0 API standard buckle types ? : supports STC (short round buckle), LTC (long round buckle), BTC (stepped buckle) How We Work1. Raw material preparationSelect API standard steel such as J55, N80, or P110Steel grade identification through eddy current testingControl the cutting length error of the pipe blank within ± 0.5mm2. Rough machining stageUse a coupling cutting machine to complete the fixed length cutting of the pipe blankBand saw machining outer circular reference surfaceCNC lathe rough inner and outer diameters, with reserved 0.3-0.5mm precision machining allowance3. Thread processingUsing a 1:16 taper CNC lathe to machine API standard threadsHook type thread design (bearing angle -3 °) to prevent looseningThe thread diameter tolerance is controlled within ± 0.002 inches4. Heat treatment and surface treatmentPerform quenching and tempering heat treatment on steel grades above N80Phosphating treatment forms an anti-corrosion layerCopper plating process (current density 3-5 A/dm 2)5. Quality inspectionThree coordinate measurement of thread geometric parametersWet magnetic particle inspection for detecting surface defects100% full inspection of thread fit for the pass stop gauge6. Finished product processingCoupling painting and rust prevention treatmentLaser marking records steel grade and batch informationSpecial packaging to prevent transportation damagePlease enter the title hereWe offer free product packaging services, including wooden crates, wooden pallets, iron pallets, etc. We can also customize packaging according to your requirementsFAQQ: Are you a factory or a trading company?A: We are Tianjin Dongfanglong Machinery Manufacturing Company.Q: How do I place an order?A: Inquiry with us → Customize based on drawings and samples → Inform us of the usage scenario → Receive our product designrecommendations → Negotiate on details → Confirm the sample → Sign the contract/pay the deposit → Mass production → Goods ready →Balance/delivery → Further cooperation.Q: What about sample orders?A: We are happy to provide you with samples. If needed, please contact us for more details. If we charge you for the sample, restassured that the fee will be fully refunded when you place a formal order.Q: Which shipping methods are available?A: We offer multiple shipping methods such as sea freight, express delivery, and China Post Express for your choice. If you haveother shipping needs or require a specific shipping route, please feel free to contact us.
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