Recently, Haina Intelligent Manufacturing Co., Ltd. passed Sinopec’s full framework tender evaluation. It was officially accredited as a qualified twin-screw pump supplier for Sinopec.
This achievement comes from strict adherence to national, industry and international standards. It also reflects full compliance with Sinopec’s stringent procurement rules.
The successful onboarding is a key recognition. It validates Haina’s product quality and factory strength for China’s top energy enterprise.
It also proves the company’s “standards-centric, data-driven” philosophy. This is the natural result of standardized systems in R&D, production and testing.
As a specialized, refined enterprise, Haina focuses on twin-screw pump R&D and manufacturing. Its core factory strength lies in standard implementation.
It turns multiple standards into actionable, quantifiable production protocols. These protocols perfectly match Sinopec’s three core requirements: high standards, high quality, high compliance.
1. R&D & Design: Align with Multiple Standards for Sinopec’s Scenarios
Haina’s R&D follows “standards as foundation, conditions as benchmark”. All twin-screw pump designs strictly adhere to multiple standards.
This ensures inherent compatibility with Sinopec’s application scenarios from the start.
- Core performance complies with GB/T 19762 “Technical Specifications for Screw Pumps”. It clearly defines thresholds for flow, pressure, efficiency and noise. For example, 100 m³/h rated pumps control flow deviation within ±3%. This far exceeds the national standard’s ±5% limit. It meets Sinopec’s bulk purchase performance uniformity requirements.
- The mechanical seal system fully aligns with API 682 international standard. It adopts a double-ended cartridge seal plus PLAN54 flushing scheme. Seal face flatness is ≤0.005mm. Leakage is limited to ≤10 drops per minute. It fully meets Sinopec’s leakage prevention requirements for flammable media.
- Explosion-proof design strictly follows GB 3836 “Explosive Atmospheres” series standards. The motor has an explosion-proof grade of DIIBT4. Auxiliary components like junction boxes and seals have passed explosion-proof certification. They adapt to oilfield and gasfield safety norms. They comply with Sinopec’s safety access criteria for dangerous conditions.
- To address Sinopec’s complex condition needs, R&D references API 610 multiphase flow requirements. The optimized screw profile ensures stable operation. It works under 0~100% GVF, ≤5g/L solid content and ≥70% water cut. It matches Xinjiang Oilfield’s actual medium characteristics. It precisely meets Sinopec’s extraction and transportation needs.
2. Production & Manufacturing: Precision Standards Ensure Bulk Purchase Uniformity
The factory’s production strength relies on a standardized system: qualified equipment, compliant processes, controllable precision. Each process follows clear standards. This ensures stable product quality. It meets Sinopec’s stringent bulk purchase requirements.
- Core production equipment meets precision machining standards. It includes CNC machining centers, high-precision grinders and G1.0-class dynamic balancing machines. CNC machining centers have positioning accuracy ≤0.008mm. Repeat positioning accuracy is ≤0.005mm. This provides hardware support for key component machining. The factory built a 355kW, 12-320m³/h full-condition simulation test bench independently. It can accurately replicate Sinopec’s complex practical scenarios. It ensures reliable product performance verification.
- Process execution strictly complies with internal and national standards. Screw profile machining uses “CNC forming + precision grinding”. Tooth profile accuracy reaches ≤0.01mm, meeting GB/T 19762 requirements. Pump body welding adopts automatic technology. It is followed by UT ultrasonic testing, meeting 20# steel welded part standards. The shaft and screw sleeve are integrally forged from 42CrMo alloy steel. It complies with GB/T 3077, with tensile strength ≥980MPa. Core components are deformation-resistant and wear-resistant. They adapt to Sinopec’s long-term continuous operation needs.
- Key dimensions are inspected per standards throughout the process. Geometric tolerance testing uses coordinate measuring machines. Bushing radial runout is ≤0.02mm. Seal chamber end face runout is ≤0.01mm. Inspection data is recorded in real time. This ensures each product’s dimensional consistency. It fully meets Sinopec’s rigid bulk purchase uniformity requirements.
3. Quality Inspection: Full-Process Control Eliminates Defective Products
The factory has built a full-process inspection system: raw material entry, production process, delivery. All inspection items align with national, industry and Sinopec’s acceptance standards. This prevents defective products from leaving the factory.
- Raw material inspection complies with GB/T 222. 42CrMo steel and 20# steel undergo spectral analysis on entry. It verifies the compliance of C, Si, Mn, Cr and other elements. Purchased components like SKF/NSK bearings and Tianxin/Huarui seals need strict checks. Brand qualifications and factory inspection reports must be verified. This ensures compliance with API 682 and GB 3836. It safeguards product reliability from the source. It aligns with Sinopec’s strict supply chain quality control.
- Multiple key quality control points are set in the production process. Each process conducts first-piece, patrol and last-piece inspections. For example, seal faces are tested with flatness testers after grinding (≤0.005mm). Bolts are tightened with standard torque during assembly (error ≤±5%). This avoids human operation deviations. It ensures stable production quality.
- Factory inspection fully meets Sinopec’s acceptance standards. Each twin-screw pump undergoes four key tests. These include continuous operation testing for stability. A 30-minute static pressure holding test (1.5× design pressure) checks for leaks. GVF 95% gas content stability testing is also required. Rated flow and outlet pressure are calibrated (deviation ≤±2% at 1.6MPa). All test data is recorded and archived. It forms a “one machine, one file” inspection report. This meets Sinopec’s core traceability and verifiability requirements.
4. System Compliance: Standard-Based Management Meets Sinopec’s Norms
The factory’s management system and compliance construction align with international standards. They also match Sinopec’s supplier management norms. This lays a solid foundation for future cooperation.
- The company holds ISO 9001 Quality Management System and ISO 14001 Environmental Management System certifications. It has established standardized management processes. Clear procedural documents and operating specifications cover the entire workflow. This includes order reception, R&D design, production and after-sales service. It deeply aligns with Sinopec’s compliant operation requirements for suppliers.
- The full-life-cycle product traceability system meets Sinopec’s requirements. All information is entered into a digital system for long-term inquiry. This includes raw material batches, production teams, inspectors and delivery dates. It facilitates subsequent operation, maintenance and quality verification. It meets Sinopec’s full-process supply chain quality control needs.
- Green production aligns with GB/T 24001. Energy-saving equipment and environmentally friendly processes are prioritized. Packaging and transportation comply with green packaging standards. No energy conservation or environmental protection violations have been recorded. This meets Sinopec’s green development transformation requirements for suppliers.
Haina’s factory strength centers on standard implementation. It covers standard-oriented R&D, precision production control and full-process compliant inspection. This strength has ultimately won Sinopec’s recognition.
The successful onboarding is both an honor and a responsibility. In the future, Haina will continue to adhere to standardized production. It will strictly comply with Sinopec’s supplier management norms. It will optimize processes and inspection systems to higher standards. It will provide stable, reliable and compliant twin-screw pump products. These products will serve Sinopec and more oil and gas industry customers. Haina will work hand in hand with partners. It will contribute to national energy security. It will promote high-quality industrial development. It will achieve win-win cooperation for all parties.
