Hebei Haihao Group

  • What material is ASTM-A694 GR.F65?

    What material is ASTM-A694 GR.F65?

    F65 in ASTM a694 is carbon steel forging. The full name of A694 is ASTM A694. It is the forging of carbon steel and alloy steel pipe flange, fittings, valves and parts for high pressure transmission equipment. The grades of ASTM a694 are:F42,F46,F48,F50,F5 ...
  • API 5L Grb LSAW Line Pipe

    API 5L Grb LSAW Line Pipe

    LSAW submerged-arc longitudinal welded pipe (DSAW | Double Submerged arc welded):Tubular product having one or two longitudinal seams produced by submerged-arc welding. Specification Acc to API5L /ISO 3183 Quality Level: PSL1 and PSL2 Grade: Gr.B/BR/BN/BQ/ ...
  • Introduction of precision steel pipe

    Introduction of precision steel pipe

    Precision steel pipe is a kind of high precision steel pipe material which is processed by cold drawing or hot rolling. The precision steel pipe has high dimensional precision and high surface finish. After heat treatment, there is no oxide film on the inn ...
  • The processing technology of precision pipe

    The processing technology of precision pipe

    General precision pipe‘s production technology can be divided into cold drawing and hot rolling. The production process of cold rolled precision pipe is generally more complicated than that of hot rolled. The pipe billet should be rolled in three rol ...
  • What's the difference between casing pipe and drill pipe?

    What’s the difference between casing pipe and drill pipe?

    Oil Country Tubular Goods (OCTG) include a range of rolled metal products, commonly known as drill pipe, casing and tubing for the petroleum industry.Both are used in the drilling process.Do you know the difference between casing pipe and drill pipe? Types ...
  • Environmental protection value of ASME B16.9 standard stainless steel pipe fittings

    Environmental protection value of ASME B16.9 standard stainless steel pipe fittings

    The raw material of ASME B16.9 stainless steel pipe fittings is a kind of environmental protection material. The utilization rate of the pipe can reach 100%, that is to say, the material can be completely recycled. In this way, the problem of environmental ...
  • Processing technology of tee pipe fittings

    Processing technology of tee pipe fittings

    Tee is a kind of pipe fitting used at the branch of pipe. For using seamless tube to manufacture tee joint, there are two kinds of commonly used processes: hydraulic bulging and hot pressing. The hydraulic bulging of the tee is a forming process of expandi ...
  • Things you need to know about steel crystallization

    Things you need to know about steel crystallization

    By equipment such as furnace, converter, electric furnace, etc., steel is smelted and presented as liquid. In order to facilitate processing, it is cast in a mold of a certain shape and size, and after condensation, it constitutes a solid steel ingot and c ...
  • Comparison of pipe and tube

    Comparison of pipe and tube

    Pipes are used for transporting fluids and gases in Chemical, Petrochemical, Power Plants, Refineries, Storage units, compressed air systems, plumbing systems, etc. They are circular in cross-section and specified by Nominal Pipe Size. Tubes are used for m ...
  • Advantages and disadvantages of magnetic particle test

    Advantages and disadvantages of magnetic particle test

    The main advantages of magnetic particle testing: Find flaws on the surface and near surfaces Fast examination method with an immediate result An easy method as compared to other NDT methods Portable and low-cost equipment. Defects are visible directly on ...
  • Codes and standards for magnetic particle inspection

    Codes and standards for magnetic particle inspection

    Normally ASME Section V: Nondestructive Examination governs the magnetic particle examination methods for most of the organizations. However, there are various other codes and standards that provide guidance rules for magnetic particle test procedures as l ...
  • Steps for magnetic particle inspection

    Steps for magnetic particle inspection

    The magnetic particle inspection is performed in following below-mention six steps. 1. Surface Preparation: All surfaces and adjacent areas (within 1 inch) that will be examined must be free from rust, scale, sand, grease, paint, slag, oily films, or other ...
  • What is magnetic particle inspection (MPI)?

    What is magnetic particle inspection (MPI)?

    Magnetic Particle Inspection (MPI) is one of the most widely used non-destructive inspection methods for locating surface or near-surface defects or flaws in ferromagnetic materials. MPI is basically a combination of two NDT methods: Visual inspection and ...
  • Necessary ultrasonic testing for piping products

    Necessary ultrasonic testing for piping products

    Hebei Haihao Group offers various ultrasonic testing to detect defects in a wide range of piping components and materials. Ultrasonic inspection uses sound reflections in order to determine pipe thickness and to locate defects in welds and materials. Ultra ...
  • Items and methods of quality inspection for heat treatment

    Items and methods of quality inspection for heat treatment

    The technical requirements of heat treatment parts are different, the heat treatment process adopted is different, and the quality inspection items and methods are different. The quality inspection items and methods commonly used in heat treatment producti ...
  • Final heat treatment inspection

    Final heat treatment inspection

    In the production of the final heat treatment quality inspection usually includes quenching, surface quenching, tempering inspection. (1) Deformation. Quenching deformation inspection in accordance with requirements, such as deformation in excess of that s ...
  • Requirement of NACE MR0175 pipe

    Requirement of NACE MR0175 pipe

    SSC Cracking factors Sulfide Stress cracking affected by following factors: 1) Subjected by chemical ingredients, hot treatment and micro structural etc. Influences metallurgy conditions and strength. 2) Hydrogen iron concentration in aqueous phase (Ph ind ...
  • Introduction to NACE MR0175 pipe and fittings

    Introduction to NACE MR0175 pipe and fittings

    NACE MR0175 Pipe and Fittings Steel pipe and related fittings which are made from the NACE material (complied with NACE MR 0175 or ISO 15156 standard). We call them NACE pipe, or NACE pipe fittings. Therefore, these products are specially used in the oil a ...
  • Requirement of NACE MR0175

    Requirement of NACE MR0175

    How to select material Steel materials that selected or qualified using NACE MR0175/ISO 15156 are resistant to cracking in defined H2S-Containing environments in oil and gas production, but are not nesessarily immune under all service conditions. Consequen ...
  • What is NACE MR0175/ ISO 15156 pipe and fittings?

    What is NACE MR0175/ ISO 15156 pipe and fittings?

    Always in pipeline systems we met the material with NACE MR0175/ISO 15156 pipe or fittings, so do you really know what is the major differences between NACE carbon pipe and normal carbon steel pipe? And how is the cost for nace material? So today we are go ...