For many years, Lianggong valve has been a qualified supplier of the three major petrochemical giants of PetroChina, Sinopec and CNOOC, providing a large number of valve products and services for the petroleum and petrochemical industries. Lianggong has been committed to the manufacturing and research and development of industrial valves such as petroleum, petrochemical, power, coal chemical, natural gas, steel, and pharmaceutical. And through technical cooperation with domestic and foreign scientific research institutions and universities, the establishment of training bases, the introduction of foreign advanced technology, so that good workers have advanced manufacturing and production equipment and a full set of testing equipment, product research and development and technology have domestic leading level.
The company has complete product specifications, novel structure, exquisite workmanship and reliable quality. Leading products include national, American, British, German, Japanese and other general valves (gate valves, check valves, ultra-supercritical power station valves, gas-only valves, ball valves, globe valves, butterfly valves, throttle valves, diaphragm valves , Regulating valve, safety valve, pressure reducing valve, trap, plug valve, high temperature and high pressure double self-sealing gate valve, power plant desulfurization valve, temperature reducing and reducing device, special valve for aluminum factory, fixed ball valve, buried full-welded ball valve, Hydraulic control butterfly valve, 1200 ° ultra-high temperature butterfly valve, hydraulic control valve, regulating valve, flat valve, electric driving device, etc.) and ultra-high temperature and high pressure, ultra-low temperature cryogenic, high-temperature and strong corrosion non-standard valves such as special operating conditions, more than 150 models, 1000 Multiple specifications.Product selection materials are mainly ductile, carbon steel, low alloy steel, duplex steel, stainless steel, chromium-molybdenum steel, special alloys, etc.（QT450、WCB、LCB、WC6、WC9、ZG1Cr5Mo、ZG15Cr1Mo1V、CF8、CF8M、CF3、CF3M、CF8C、12Cr1MoV、ZG08Cr18Ni9Ti、ZG08Cr18Ni9、ZG12Cr18Ni9Ti、ZG08Cr18Ni12Mo2Ti、ZG12Cr18Ni12Mo2TiMonel, copper alloy, titanium alloy, Hastelloy, nickel alloy, etc.）；Nominal diameter from DN10-5000mm and 1/2" ~ 80"; Working pressure from 0.25 ~ 80.0MPa and 150Lb ~ 4500 Lb；Working temperature from -196℃ ~ 1350℃。Widely used in power stations, nuclear power, petroleum, chemical, natural gas, military, municipal, metallurgical, construction, pharmaceutical, paper-making, coal mining, cement, sewage, environmental protection, energy saving and other industries. The product quality is reliable, the performance is stable, and it is well received by users.
The company has advanced testing, inspection and testing equipment. Established a complete physical and chemical performance and non-destructive testing laboratory, existing full-automatic direct-reading spectrometer, spectral alloy analyzer, high-speed ignition infrared carbon and sulfur analyzer, hydraulic universal material testing machine, pendulum impact testing machine, tensile testing machine , Rockwell Hardness Tester, Brinell Hardness Tester, Portable Leeb Hardness Tester, Ultrasonic Thickness Gauge, Coating Thickness Gauge, Ultrasonic Flaw Detector, Magnetic Particle Flaw Detector, Crystal Phase Analyzer, X-Ray Flaw Detector, Automatic Washing Machine, three-dimensional measuring instrument and other inspection and testing equipment.Established an advanced pressure test center, with intelligent valve torque, life test equipment, hydraulic valve pressure test equipment, valve flow test room, paint spraying environmental protection equipment, physical and chemical laboratory, fluid dynamic anti- laboratory, ultra-low temperature laboratory, Ultra-high temperature and high pressure inspection and testing room.
Product research is the vitality of the company Auto CAD、SolidWorks、Pro/E、UG.Based on design software and a powerful design team, a valve product design center, research and development center, optimization center, and dynamic simulation design system have been established. The advanced finite element analysis system and perfect product structure optimization ensure the product development quality and speed. Good workers have won the trust and praise of customers with sound management systems, strong technical force, rich experience, advanced process reforms, sophisticated equipment updates, comprehensive testing equipment and comprehensive and efficient after-sales service.
Lianggong valve will continue to follow the quality policy of "improving the system, continuous improvement, ensuring quality, delivery on time, warm service, customer satisfaction", in the spirit of "survive by quality, develop by benefit, and report to customers in good faith" Good workers promise: We will provide high-quality services to customers with first-class quality, reasonable prices, complete varieties and fast delivery.