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  • Can the hot dipped galvanized steel tube be welded?

    Date:2016-02-01      View(s):1094      Tag:hot dipped galvanized steel tube, hot dipped galvanized steel pipe, pre-galvanized steel pipe

    Generally speaking, all the galvanized steel tubes, no matter they are hot dipped or cold dipped, cannot be welded to be welded steel tubes.However, everything has an exception....

  • The craft of manufacturing the smls pipe

    Date:2016-01-26      View(s):1207      Tag:smls pipe, smls steel pipe, seamless pipe, seamless steel pipe, seamless carbon steel pipe

    The first step to make the seamless pipes is generally started with a hot extrusion to form the tube hollows from billets which has typically a drilled hole and is pushed through a die and over a mandrel with the process of air cooling or water quenching afterwards. ...

  • Precision Bright Tubes Common Surface Treatment Process

    Date:2016-01-21      View(s):1177      Tag:steel pipe production process, precision bright tubes,surface treatment for steel pipe

    Precision bright tubes passivation, pickling, degreasing three common precision light pipe surface treatment process. ...

  • Heat Treatment for LSAW Steel Pipe

    Date:2016-01-21      View(s):1156      Tag:LSAW steel pipe, heat treatment for steel pipe, welded steel pipe manufacturer

    LSAW steel pipe after heat treatment is a new technology to eliminate residual stress. After the material is preheated before welding to heat treatment temperature and the butt welding process to maintain the temperature of the continuously heated member...

  • What is the difference between HFW and ERW?

    Date:2016-01-20      View(s):4198      Tag:high frequency welding, electric resistance welding, welded steel pipe manufacturer

    High-frequency welding(HFW) is a solid resistance heat energy. The use of high-frequency current welding resistance heat generated in the workpiece so that the workpiece is heated to melt the welding area or near the surface of the plastic state ...

  • What is Electric Resistance Welding?

    Date:2016-01-19      View(s):1168      Tag:ERW steel pipe, welded steel pipe manufacturer, electric resistance welding process for steel pipe

    Electric resistance welding is the use of current through resistor between the workpiece and the welding heat generated by the contact surface. ...

  • What is High Frequency Welding?

    Date:2016-01-17      View(s):1022      Tag:efw steel pipe, EFW STEEL PIPE, high frequency welding, welded steel pipe manufacturer

    High frequency welding is the effect of skin effect and the adjacent high frequency current generated by the use of the butt plate and other metal materials up new welding process. ...

  • Ultrasonic Testing for steel pipe

    Date:2016-01-16      View(s):1419      Tag:steel pipe ultrasonic testing, steel pipe manufacturer, steel pipe exporter, steel pipe supplier

    Using ultrasonic testing to detect the quality of seamless steel pipe can be done defects (corrosion, cracks, pits, etc.) is detected without damaging the pipe. ...

  • Hardness and Tensile Strength of Steel Pipe

    Date:2016-01-15      View(s):1102      Tag:steel pipe manufacturer, steel pipe production process, steel pipe hardness and strength

    When hardness of steel pipe is below 500HB, which is proportional to the tensile strength and hardness. Hardness with tempering temperature decreases, but in the state as well as the quenching and tempering below 300 ℃, the hardness and tensile strength of the relationship is difficult established. ...

  • Steel Pipe Heat Number Introduction

    Date:2016-01-14      View(s):1264      Tag:steel pipe heat number, steel pipe manufacturer, steel pipe exporter

    Heat number: it is a steel smelting furnace number of times with unique, traceability. Different mills have different numbering, but each furnace steel must be a number. ...

  • Defect of Hot-rolled Seamless Steel Pipe

    Date:2016-01-12      View(s):1296      Tag:seamless steel pipe, hot rolled seamless steel pipe, steel pipe defects, pipe manufacturer

    Defect of Hot-rolled Seamless Steel Pipe. It including separation, straight inner flap, irregular hole, wall contraction, rolled scar, inside folding, rolling off, tear, fold the double-slit, double centerfold, outer folding...

  • Factory Equipment Introduction

    Date:2016-01-11      View(s):1085      Tag:factory equipment, steel pipe factory, steel pipe production equipment, steel pipe manufacturer

    Prime steel pipe attach importance to the quality of products, that professional purchasing team is stationed in the production frontline for QA and prompt delivery. ...

  • What high-pressure boiler pipe production characteristics?

    Date:2016-01-02      View(s):1062      Tag:high pressure boiler tube, high pressure boiler pipe, boiler tube manufacturer

    What high-pressure boiler pipe production characteristics? Steel Institute 102 (12Cr2MoWVTiB) production and 12Cr1MoVG high-pressure boiler tube production is not much difference. Its main production features are: ...

  • What is Quenching?

    Date:2015-12-25      View(s):1326      Tag:quenching process, steel pipe quenching process, quenching heat treatment

    Quenching is the heat treatment process applied on metal. Heated the metal to a suitable temperature and hold for a certain time, then immersed in quenching medium and cooled immediately. In general, saline, water, mineral oil, air can be used as quenching medium....

  • What is Annealing?

    Date:2015-12-24      View(s):1436      Tag:annealing process, steel annealing, heat treatment process

    Annealing is a heat treatment process for metal, slowly heated the metal to a certain temperature and maintain a sufficient time, and then cooling at an appropriate rate....

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