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  • What is oil drill pipe? What types of oil drill pipes are there?
  • Causes of Slag Inclusion in Straight Seam Steel Pipes
    Causes of Slag Inclusion in Straight Seam Steel Pipes
    2023-11-07
    Slag inclusion in welded steel pipes is the slag remaining inside the weld. From theoretical analysis, the main reasons for slag inclusion in submerged arc automatic welding are as follows: ①There are many inclusions in the raw materials (including base metal, welding wire, and flux); ②The cleaning
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  • Seamless square and rectangular tube hollow section
    Seamless square and rectangular tube hollow section
    2023-11-06
    Seamless square tube and rectangular tube is a metal product widely used in construction and engineering fields. It has many advantages and broad market prospects. The following will provide an in-depth analysis of the product’s characteristics, application fields, and impact on the environment.
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  • Welding Method of Steel Pipe Fittings
    Welding Method of Steel Pipe Fittings
    2023-11-06
    (1) Butt-welding connections are mostly used for DN50 and above pipes of the same material. The two ends of the steel pipe fittings are provided with welding grooves. Compared with several other connection methods, due to its good sealing performance, strength, quality, corrosion resistance, and oth
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  • LSAW Welded Steel Pipe: Features and Manufacturing Processes
    LSAW Welded Steel Pipe: Features and Manufacturing Processes
    2023-11-03
    LSAW (Longitudinal double submerge arc welding) carbon steel pipe is a type of SAW pipe made of steel plates that were hot rolled by JCOE or UOE forming technology.
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  • ASTM A53 Square Tube
    ASTM A53 Square Tube
    2023-11-03
    ASTM A53 square tube is a commonly used steel pipe product and is widely used in various fields.
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  • Length Description of Large Diameter Steel Pipe
    Length Description of Large Diameter Steel Pipe
    2023-11-03
    1. Normal length (also called non-fixed-length length): Any length that is within the length specified by the standard and no fixed length is required is called normal length. For example, the structural pipe standard stipulates hot-rolled (extruded, expanded) steel pipe 3000mm~12000mm; cold drawn (
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  • Seamless steel pipe schedule 40
    Seamless steel pipe schedule 40
    2023-11-02
    Schedule 40 (Sch40) seamless steel pipe, this keyword involves two important concepts in the steel industry: Seamless steel pipe and Sch40. Seamless steel pipe is a special kind of steel pipe, and Sch40 is one of the specifications of seamless steel pipe.
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Hunan Great Steel Pipe Co.,Ltd
Hunan Great Steel Pipe Co.,Ltd is a world-class production and service provider of submerged arc straight seam welded pipe as the first subsidiary of Shinestar Group. Hunan Great Steel Pipe Co.,Ltd pays more attention to in the pipeline engineering research areas as a pioneer of China Petroleum Pipeline & Gas Pipeline Science Research Institute.

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