뉴스

뉴스

  • Company introduction

    Hebei Liyong Flowtech Co., Ltd. is a leading manufacturer and exporter of valves, fittings, flanges, pipes and other piping products. Our company is located in the North China Plain of China, which is rich in resources and rich in industrial heritage. We specialize in the manufacture of a wide ra...
    자세히보기
  • 밸브

    A valve is a device or natural object that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically fittings, but are usually discussed as a separate category. In an...
    자세히보기
  • 밸브의 주물 재료

    Casting Materials of Valves ASTM Casting Materials Material ASTM Casting SPEC Service Carbon Steel ASTM A216 Grade WCB Non-corrosive applications including water, oil and gases at temperatures between -20°F (-30°C) and +800°F (+425°C) Low Temp Carbon Steel ASTM A352 Grade LCB Low temperatu...
    자세히보기
  • 기존 및 신규 DIN 명칭

    기존 및 새로운 DIN 지정 수년에 걸쳐 많은 DIN 표준이 ISO 표준에 통합되었으며 따라서 EN 표준의 일부이기도 합니다. 유럽 ​​표준 개정 과정에서 여러 DIN 표준이 철회되고 DIN ISO EN 및 DIN EN으로 대체되었습니다. 사용된 표준...
    자세히보기
  • 밸브 작동기 소개

    밸브 액추에이터 소개 밸브 액츄에이터 밸브 액추에이터는 밸브를 작동하는 데 필요한 토크와 자동 작동의 필요성을 비롯한 여러 요인에 따라 선택됩니다. 액추에이터 유형에는 수동 핸드휠, 수동 레버, 전기 모터, 공압식, 솔레노이드, 유압식...
    자세히보기
  • 밸브, 피팅, 플랜지에 대한 일반 표시 표준 및 요구 사항

    Generic Marking Standards and Requirements Component Identification The ASME B31.3 Code requires random examination of materials and components to ensure conformance to listed specifications and standards. B31.3 also requires these materials to be free from defects. Component standards and spec...
    자세히보기
  • 플랜지용 토크 조임

    Torque Tightening To obtain a leak-free flange connection, a proper gasket installation is needed, the bolts must be assign on the correct bolt tension, and the total bolt strength must be evenly divided over the whole flange face. With Torque Tightening (the application of preload to a fasten...
    자세히보기
  • 플랜지 개스킷 및 볼트

    Flanges Gaskets & Bolts Gaskets To realize a leak-free flange connection gaskets are necessary. Gaskets are compressible sheets or rings used to make a fluid-resistant seal between two surfaces. Gaskets are built to operate under extreme temperature and pressures and are available in a wide ...
    자세히보기
  • 플랜지 페이스 마감

    Flange Face Finish Flange face finish The ASME B16.5 code requires that the flange face (raised face and flat face) has a specific roughness to ensure that this surface be compatible with the gasket and provide a high quality seal. A serrated finish, either concentric or spiral, is required wi...
    자세히보기
  • 플랜지 면

    Flange Faces What is a Flange face? Different types of flange faces are used as the contact surfaces to seat the sealing gasket material. ASME B16.5 and B16.47 define various types of flange facings, including the raised face, the large male and female facings which have identical dimensions to...
    자세히보기
  • 플랜지의 종류

    Types of Flanges Flange types As already described before, the most used flange types ASME B16.5 are: Welding Neck, Slip On, Socket Weld, Lap Joint, Threaded and Blind flange. Below you will find a short description and definition of each type, completed with an detailed image. Most common flang...
    자세히보기
  • 플랜지의 압력 등급

    Pressure Classes of Flanges Forged steel flanges ASME B16.5 are made in seven primary Pressure Classes: 150 300 400 600 900 1500 2500 The concept of flange ratings likes clearly. A Class 300 flange can handle more pressure than a Class 150 flange, because a Class 300 flange are co...
    자세히보기
123다음> >> 페이지 1 / 3