High quality special steel supplier.Old rev.
  • Certified Company

    DNV&ABS
  • Certified Company

    ISO 9001:2008
  • R&D Production

    In China
  • steel for Turbine
    LongHai,Steels of Steam turbine
    High Quality
    Blade of Steam Turbine, Nozzle, Casing, Disc,Rotor,Shaft,Fasteners etc.
  • Longhai,Steels of Power
    High Quality
    We have been supplying power systems for many years and have extensive supply experience.
  • Longhai Steel fo Oil & Gas applications.
    Uses of Steel in Oil and Gas Industry
Markets We Serve
Solutions

Over the past 15 years, we have established partnerships with customers in more than 20 countries around the world, and we have a stable and continuous cooperation. We look forward to establishing partnerships with more partners.

Working Process
Way for Solution

To take a trivial example, which of us ever undertakes laborious physical exercise, except to enjoy a pleasure that has no annoying consequences.

  • 1

    Technical Requirement

    Analysis

    Safety and innovationAnalyze customer needs and develop production processes.

  • 2

    Smelting

    AOD+ESR
    EAF+LF+VD+ESR
    VIM+ESR
    VIM+VAR

    Different smelting type according to different material requirements.

  • 3

    Shaping

    Forging(Press)
    Hot rolling
    Cold rolling
    Drawing

    Idea of pleasure praisings was complete system.

  • 4

    Heat treatment

    Carburizing

    annealing, tempering, normalizing, hardening and tempering, pre-hardening, quench annealing, ageing etc.

Updates
Products
1.7336(13CrMoSi5-5) Plate Sheet

1.7336(13CrMoSi5-5) Plate Sheet

EN 1 7336 steel is an alloy steel formulated for primary forming into wrought products 1 7336 is the EN numeric designation...

630 / 17-4ph ESR Steel for Equipment for making masks

630 / 17-4ph ESR Steel for Equipment for making masks

630 17-4ph ESR Steel for Equipment for making masks

422 Stainless Steel Round Bar

422 Stainless Steel Round Bar

422 Stainless Steel Round Bar is a hardenable, martensitic stainless steel designed for service temperatures as high as 1200 F This grade develops high mechanical properties via heat treatment and offers good sca

X65Cr13(1.4037) stainless steel strip coils

X65Cr13(1.4037) stainless steel strip coils

X65Cr13(1 4037) stainless steel strip coils

310Cb stainless steel plate

310Cb stainless steel plate

310Cb stainless steel plate Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes(2015a)

Steel for equipment for making masks 630 / 17-4ph ESR

Steel for equipment for making masks 630 / 17-4ph ESR

Steel for equipment for making masks 630 17-4ph ESR