News

  • China Steel Association: steel demand is expected to recover in 2023

    China Steel Association: steel demand is expected to recover in 2023

    According to comprehensive media reports, in 2022, in the face of the complex and severe international situation and the spread of domestic epidemic situation, the downstream demand of China’s seamless steel pipe and steel plate industry will weaken, the price of alloy seamless steel pipe w...
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  • Application scope and product characteristics of cold-drawn seamless steel pipe

    Application scope and product characteristics of cold-drawn seamless steel pipe

    Cold-drawn seamless steel pipe is a precision cold-drawn seamless steel pipe with high dimensional accuracy and good surface finish for mechanical structure and hydraulic equipment. Selecting precise seamless steel pipe to manufacture mechanical structure or hydraulic equipment can greatly save m...
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  • Direct Quenching Process for Precision Cold Rolled Small Diameter Seamless Steel Pipe

    High alloy steel precision small diameter seamless steel pipe almost does not use direct quenching process; When the quantity of retained austenite is strictly required, the low alloy steel will not be directly quenched. A typical problem is the appearance of ripples on the surface of a precision...
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  • ASTM A36 plate suppliers in China Wide stock of SA36 steel plate and ASTM A36 Mild Steel Sheet

    ASTM A36 plate suppliers in China Wide stock of SA36 steel plate and ASTM A36 Mild Steel Sheet

    Haihui steel are a renowned Astm A36 Plate Suppliers. It is a multipurpose alloy plate and has gained its demand in the market for since many years. carbon steel plate astm a36are designed by the team of expert manufacturers to provide high-quality service to our customers. It is made of premium...
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  • Analysis of Seamless Steel Pipe and Welded Steel Pipe

    Analysis of Seamless Steel Pipe and Welded Steel Pipe

    Now steel pipes are everywhere in our lives, but how to choose the right steel pipes for our use? Steel pipes are widely used and have many types. Steel pipes can be divided into two categories according to production methods: seamless steel pipes  and welded steel pipes...
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  • Discuss the significance of machined steel pipe and structural steel pipe

    Discuss the significance of machined steel pipe and structural steel pipe

    In the world of Seamless Steel tubing, things can get a bit confusing. With many different types of steel tubing for different applications, terms and meanings can be a bit ambiguous. With this in mind, we’ve set out to explain the difference between structural seamless ...
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  • Common Defects and Reason of Cold Drawn Seamless Steel Tubing

    Common Defects and Reason of Cold Drawn Seamless Steel Tubing

    In the process of smelting or hot working of steel, due to certain factors (such as non-metallic inclusions, gases, process selection or improper operation, etc.). Defects inside or on the surface of the seamless steel pipe will seriously affect the quality of the materi...
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  • Introduction to Steel Pipe

    Introduction to Steel Pipe

    Steel pipe is a kind of steel with hollow section, whose length is far greater than the diameter or circumference. It is divided into circular, square, rectangular and special-shaped steel pipes according to the section shape; It can be divided into carbon structural ste...
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  • Sorbitized  Precision Steel Pipe for Automobile Parts

    Sorbitized Precision Steel Pipe for Automobile Parts

    Sorbitized (5.50) precision steel pipe for automobile parts. The original name was “lead quenching method”. Since the 1950s, our country has heated the steel wire to the austenitizing temperature, and then immersed it in the lead bath at the temperature near the nose of the isothermal...
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  • Production advantages of large diameter steel pipe and heavy wall thickness steel pipe

    Production advantages of large diameter steel pipe and heavy wall thickness steel pipe

    Relying on the advantages of resources and complete equipment, Shandong Haihui Steel Industry Co., Ltd. provides steel pipe such as material 45 #, 40Cr, Q235B,...
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  • Application and Analysis of ASTM A1045 Structural Steel Pipe

    Application and Analysis of ASTM A1045 Structural Steel Pipe

    ASTM A1045 Structural Steel Pipe is generally applicable to the material of seamless steel pipe. Seamless steel pipe is divided into GB8162 and GB8163, which are two commonly used standards in China. However, ASTM A1045 Structural Steel Pipe has only GB8162, which is a c...
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  • 42CrMo Alloy Seamless Steel Pipe/Tubing

    42CrMo Alloy Seamless Steel Pipe/Tubing

    42CrMo seamless steel pipe belongs to ultra-high strength steel, with high strength and toughness, good hardenability, no obvious tempering brittleness, high fatigue limit and multi impact resistance after quenching and tempering, and good low-temperature impact toughnes...
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