China Puyang Zhongshi Group Co., Ltd. Company News

A blind plug is a component designed to cover or seal unoccupied openings in electrical or mechanical systems. It prevents contaminants such as dust, dirt, and moisture from entering unused ports or threaded holes, ensuring the integrity and safety of the system. Blind plugs are also referred to as dummy plugs or insulating plugs in industrial applications. Blnd plugs for tubing is a tool for tubing string in oil wells. There is various type for blind plugs in oil well: flat end, dome end; box thread, pin thread. 

What Is a Casing Head and Why Does It Matter? A casing head is one of the most important pieces of equipment in any wellhead assembly. Sitting at the very top of the surface casing, it serves as the structural and pressure-sealing interface between the casing string and the rest of the wellhead system. In simple terms, the casing head is the "foundation" that supports every component installed above it and keeps wellbore fluids safely under control throughout the life of the well. Core Functions of a Casing Head Casing suspension: Supports and hangs the weight of intermediate and production casing strings. Pressure containment: Provides a sealed barrier that isolates wellbore pressure from the surface environment. Annular access: Offers side outlets for monitoring pressure, circulating fluids, and performing well control operations. Connection platform: Acts as the mounting base for tubing heads, blowout preventers (BOPs), and Christmas trees. Key Technical Features ParameterTypical Specification Working Pressure2,000 – 20,000 psi (API 6A) Material ClassCarbon steel, alloy steel, stainless steel Temperature Rating-60°C to 121°C (P to U class) Connection TypesThreaded, studded, and clamped designs ComplianceAPI 6A, API 6B, NACE MR0175 Standards and Quality Assurance Every casing head we manufacture is engineered to meet stringent international standards. Full traceability, hydrostatic pressure testing, and non-destructive examination (NDE) are performed on each unit before shipment. Our products conform to API 6A and API 6B specifications, and can be supplied in H2S-resistant configurations compliant with NACE MR0175 for sour service applications. Applications Across the Industry Casing heads are widely used in onshore and offshore drilling, workover operations, and production wellheads. They are essential in: Conventional oil and gas wells Shale and tight-gas development Geothermal and injection wells CO2 sequestration and storage projects Why Partner With Us? With decades of manufacturing expertise and a commitment to precision engineering, we deliver casing heads that combine reliability, safety, and long service life. Our engineering team supports custom designs, fast lead times, and full documentation packages to keep your drilling program on schedule and on budget. Built for Demanding Field Conditions From high-pressure deep wells to corrosive sour-service environments, our casing heads are engineered to perform where it matters most. Each unit is manufactured from premium forged or cast steel, precision-machined to tight tolerances, and rigorously inspected to guarantee a leak-free seal. Optional features include multiple side outlets, back-pressure valves, and custom flange configurations to match your existing wellhead stack. Installation and Maintenance Advantages Our casing head designs prioritize ease of installation and long-term maintainability. Modular components reduce rig-up time, while standardized connections simplify integration with third-party wellhead equipment. Routine maintenance is straightforward, helping operators minimize downtime and extend asset life across the entire production cycle. Contact Us Today Looking for dependable wellhead equipment for your next project? Our team is ready to help you select the right casing head for your specific pressure, temperature, and environmental requirements. Send us your inquiry today and discover why operators around the world trust our wellhead solutions.

Polished rod clamp is a crucial equipment to transfer force between pumping unit and polished rod. The polished rod clamps made in the plant adopt butterfly structure with hinge connection. When installation, users only need to clear the inner hole of the clamp and polished rod surface, evenly screw bolts on the clamps to ensure enough friction for the force transmission. It's easy to install and dismantle the clamps without damaging the polished rod.   The hot sale model are 1 1/2, 1 1/4 and 1", there are different stuctures, one bolt, two bolts and three bolts, the material can be casting and forging. All customized as per client request.   Tina Chen Sales Manager Company: PUYANG ZHONGSHI GROUP CO.,LTD Address: Mazhuangqiao Town,Puyang City,Henan Pro.,China Tel&WhatsApp:+8613213933762 Email: tina@zspetro.com Website: http://www.zspetro.net

Special Grooved Valve Seat Order for Venezuela Confirmed, Production Scheduled   We are pleased to announce that an order for a batch of specially designed grooved valve seats from our valued client in Venezuela has been officially confirmed.   Following the final confirmation of the production drawings, the order has now been arranged and scheduled for production. The valve seats feature a special groove design tailored to meet the client's specific application requirements, and every drawing has been carefully reviewed to ensure full compliance with the agreed specifications.   Production is now being arranged accordingly. We will keep the client fully informed of production progress and delivery schedules, and remain committed to delivering products of the highest quality on time.     If you have any requirements, please feel free to call us for inquiries.        

.gtr-container-fgh789 { font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif; color: #333; line-height: 1.6; padding: 15px; box-sizing: border-box; max-width: 100%; overflow-x: hidden; } .gtr-container-fgh789 p { font-size: 14px; margin-bottom: 1em; text-align: left; color: #444; } .gtr-container-fgh789 img { max-width: 100%; height: auto; display: block; margin: 15px auto; border-radius: 4px; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1); } @media (min-width: 768px) { .gtr-container-fgh789 { padding: 25px; } .gtr-container-fgh789 img { margin: 25px auto; } } It's the good news that a new batch of finished sucker rods order has been shipped in August. This order is for 30ft length sucker rods. We have the big market for sucker rods and related accessories in south America, supplies quality sucker rods, sucker rod couplings and polished rods in big quantity every year.  

Product Introduction Puyang Zhongshi Group Co., Ltd, a professional manufacturer of oilfield cementing accessories, has introduced its high-performance 7" Reamer Shoe (Model: RS07000850) for reliable casing cementing operations. Combining the guiding function of a conventional guide shoe with the reaming capability of a reamer, this tool helps operators overcome tight hole sections, ledges and debris while ensuring smooth, efficient casing running and cementing. What Is a Reamer Guide Shoe? A reamer guide shoe, also known as a reaming shoe, is installed at the bottom of the casing string. During tripping-in, it performs two core functions: it guides the casing into the wellbore along the correct path, and its hardened reaming blades actively mill away obstructions, key seats and mud cake buildup so that the casing can pass through difficult intervals without getting stuck. When circulation and cementing begin, the shoe's flow ports deliver cement slurry efficiently to the annulus, ensuring complete zonal isolation. Key Features Eccentric Aluminum Guide Nose: The streamlined eccentric nose design centralizes the casing string, minimizes the risk of hitting ledges or washouts, and is easy to drill out after cementing. Six Tungsten Carbide Reaming Blades: Six hard-faced blades provide aggressive yet stable reaming performance, effectively removing tight spots, key seats and debris to reduce stuck-pipe risk. Optimized Cement Ports: Three Ø25 mm and three Ø20 mm flow ports allow smooth cement slurry displacement and help achieve uniform annular fill for better zonal isolation. API 5CT L80HC Body: The body is manufactured to API 5CT standard in L80HC grade, delivering high strength, hardness and wear resistance for demanding downhole conditions. Premium Casing Connection: The shoe features a standard 7" casing box thread (26 lb/ft), ensuring a secure, high-integrity, leak-proof connection with the casing string. API Class G Cement Fill & API RP10F III C Valve Seal: Standardized cement fill and valve seal grades guarantee consistent, high-quality cementing performance. M20 Set Screws: Two M20 set screws securely lock the internal components in place during running and cementing. Technical Specifications ParameterSpecification Model / Part NumberRS07000850 Nominal Size7" (177.8 mm) casing Maximum Outside Diameter8.25" (209.55 mm) Inside DiameterØ159.2 mm Overall Length590 ± 3 mm Body Length451 ± 3 mm Connection7" casing box thread, 26 lb/ft Reaming Blades6 blades, tungsten carbide reinforced Cement PortsØ25 mm × 3 + Ø20 mm × 3 Body MaterialAPI 5CT L80HC Cement FillAPI Class G Valve SealAPI RP10F III C Guide NoseEccentric aluminum nose Set ScrewsM20 × 2 pcs Applications Casing cementing operations in vertical, deviated and horizontal wells Running casing through tight hole sections, ledges and key seats Wells with unstable formations, debris or heavy mud cake buildup Liner and casing jobs where reaming-while-running is required Benefits Significantly reduces the risk of stuck casing, saving rig time and operational cost Improves cementing quality through smooth passage and uniform slurry displacement Combines guiding and reaming functions in one tool, simplifying BHA design and logistics Eccentric aluminum nose and drillable design avoid additional milling trips, accelerating well completion Conclusion The 7" Reamer Shoe RS07000850 from Puyang Zhongshi Group Co., Ltd is a reliable, cost-effective solution for operators seeking to improve casing running efficiency and cementing quality in challenging wellbore conditions. With its durable API 5CT L80HC construction, six tungsten carbide reaming blades, premium casing connection and customer-oriented customization, it is an ideal choice for drilling and cementing service companies worldwide. For more information about the Reamer Shoe RS07000850 or customized cementing tools, please contact our sales team.

API Sucker Rod Pump Spray Metal Plunger Shippment to Russia Mechanical properties, surface finish and dimensional accuracy is higher than the standard requirements.Corrosion resistance is strong, long service life, product size can be customized. Plunger: 1045 steel spraying (B1), 1045 steel spraying (B2), 1045 steel chrome plating (A1), 1045 steel double chrome plating (A2).

Title：Company Dispatches Batch of API‑Compliant Pump Barrels to Venezuela in July 2026 Date: July, 2026 Our company has completed manufacturing and shipment for a batch of pump barrels for Venezuela petroleum operators. All pump barrels are manufactured to API 11AX requirements, with full MTC material test certificates provided. The whole consignment has been loaded for sea‑worthy export shipment in July 2026. The pump barrels will be applied to on‑site sucker‑rod pump systems, helping improve production efficiency for local oil wells. We will keep providing reliable API‑standard down‑hole components for Latin‑America oil‑and‑gas clients.

Title：Company Dispatches Batch of API‑Compliant Pump Barrels to Venezuela in July 2026 Date: July, 2026 Our company has completed manufacturing and shipment for a batch of pump barrels for Venezuela petroleum operators. All pump barrels are manufactured to API 11AX requirements, with full MTC material test certificates provided. The whole consignment has been loaded for sea‑worthy export shipment in July 2026. The pump barrels will be applied to on‑site sucker‑rod pump systems, helping improve production efficiency for local oil wells. We will keep providing reliable API‑standard down‑hole components for Latin‑America oil‑and‑gas clients.

The polished rod clamp is of butterfly structure, it is fixed on the polished rod as retaining device for the rope hanger. It makes the pumping unit horse-head connected with polished rod through rod eye lifting device, and then the polished rod append and support the load of sucker rod string. The polished rod clamp is an important part connecting oil pump and sucker rod, it is required not only reliable, have a certain capacity, but also can not cause damage for sucker rod.   Polished rod clamps function: It has solved the problem of the polished rod body damage caused by the taper slip jamming dens pressing into rod body and greatly reduced the accident of seriously hurting the seal element to cause oil leakage due to the scar on the polished rod surface in the process of resulting stoke parameters or changing pump setting depth.   Puyang Zhongshi Group supply polished rod clamps with two kinds of material technology-casting technology and forging technology. The performance of forging type polished rod clamps is better than casting type.