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  • Knowledge of flange blanks

    Knowledge of flange blanks

    Flange blank, flange blank is a more common form of production at present, liaocheng development zone hongxiang stamping parts factory compared with the traditional flange production process, has t...
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  • Specification for heating ingot steel used in forging

    Specification for heating ingot steel used in forging

    Large free forgings and high alloy steel forgings are mainly made of steel ingot, which can be divided into large ingot and small ingot according to the specification of steel ingot. Generally the ...
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  • Butt-welding flange sealing is reliable

    Butt-welding flange sealing is reliable

    High pressure butt welding flange is one of the most demanding flange products in the market. The general pressure grade of high-pressure butt welding flange is between 0.5MPA-50mpa. The structural...
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  • Analysis of butt welding flange production process

    Analysis of butt welding flange production process

    1, butt welding flange annealing temperature is up to the specified temperature, butt welding flange treatment is generally taken solution heat treatment, that is, people usually so-called "anneali...
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  • Rust removal tool for stainless steel flange

    Rust removal tool for stainless steel flange

    1. file: flat, triangular and other shapes, mainly used to remove welding slag and other prominent hard objects. 2. Wire brush: it is divided into long handle and short handle. The end face of the ...
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  • Forging flange production process

    Forging flange production process

    The forging process usually includes the following steps: selection of high quality billet blanking, heating, forming and forging cooling. Forging processes include free forging, die forging and th...
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  • Flange connection and process flow

    Flange connection and process flow

    1. Flat welding: only welding the outer layer, do not need to weld the inner layer; Generally used in medium and low pressure pipelines, the nominal pressure of pipe fittings should be less than 2....
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  • Application of carbon steel flange in making steel plate

    Application of carbon steel flange in making steel plate

    Carbon steel flange itself compact structure, simple structure, maintenance is also very convenient, sealing surface and spherical surface is often in a closed state, not easy to be washed by the m...
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  • China gb neck flange manufacturer – quality win

    China gb neck flange manufacturer – quality win

    DHDZ is the national standard with neck flange manufacturers. The company has strong technical force, can design and manufacture various special specifications of pipe fitting products according to...
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  • How to identify flange quality

    How to identify flange quality

    Shop around. How do you compare? Just comparing prices? Can you guarantee the quality of the flange you buy? The following flange manufacturer teaches you how to identify the quality of the flange....
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  • Stainless steel flange and carbon steel flange material how to identify

    Stainless steel flange and carbon steel flange material how to identify

    Stainless steel flange and carbon steel flange material how to identify? How to distinguish the roughly material of two kinds of flanges is relatively simple. The following DHDZ flange manufacturer...
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  • What are the four factors that affect the flange process

    What are the four factors that affect the flange process

    Four factors affecting the flange process are: 1. Annealing temperature reaches the specified temperature. Flange processing is generally adopted solution heat treatment, temperature range of 1040~...
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