JPH08257635A - Method for producing metal-coated anticorrosion steel pipe - Google Patents
Method for producing metal-coated anticorrosion steel pipeInfo
- Publication number
- JPH08257635A JPH08257635A JP6842195A JP6842195A JPH08257635A JP H08257635 A JPH08257635 A JP H08257635A JP 6842195 A JP6842195 A JP 6842195A JP 6842195 A JP6842195 A JP 6842195A JP H08257635 A JPH08257635 A JP H08257635A
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- corrosion
- resistant metal
- metal plate
- coated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Abstract
(57)【要約】
【目的】 鋼管に耐食性金属薄板を能率良く確実に被覆
し、かつ、これを連続的に接合し得る耐食性金属被覆鋼
管の製造方法を提供することを目的とする。
【構成】 鋼管の外周に耐食性金属板をスパイラル状に
連続的に巻き付けて被覆してなる金属被覆防食鋼管の製
造において、スパイラル状に巻き付ける前に耐食性金属
板の片側端縁部に帯状の耐食性金属板を抵抗シーム溶接
で加圧接合し、さらに鋼管の外周表面でスパイラル状に
巻き付けられた耐食性金属板の他方の片側端縁部と帯状
の耐食性金属板とを鋼管とともに抵抗シーム溶接するこ
とを特徴とする。また、前記鋼管は外周に有機または無
機系の硬化充填材が装填されていることを特徴とする。
(57) [Abstract] [Purpose] An object of the present invention is to provide a method for producing a corrosion-resistant metal-coated steel pipe capable of efficiently and reliably coating a steel pipe with a corrosion-resistant metal thin plate and continuously joining the thin plates. [Structure] In the manufacture of a metal-coated anticorrosion steel pipe in which a corrosion-resistant metal plate is continuously wound in a spiral shape on the outer periphery of a steel pipe to cover the steel pipe, the strip-shaped corrosion-resistant metal is formed on one edge of the corrosion-resistant metal plate before spirally winding. The plates are pressure-sealed by resistance seam welding, and the other side edge of the corrosion-resistant metal plate spirally wound around the outer peripheral surface of the steel pipe and the strip-shaped corrosion-resistant metal plate are resistance seam-welded together with the steel pipe. And Further, the steel pipe is characterized in that an organic or inorganic hardening filler is loaded on the outer periphery thereof.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐食性に優れた金属被
覆鋼管杭および、パイプライン用として製作された耐食
性被覆鋼管の製造法方に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal-coated steel pipe pile having excellent corrosion resistance and a method for producing a corrosion-resistant coated steel pipe manufactured for a pipeline.
【０００２】[0002]
【従来の技術】従来、例えば海洋に用いられる防食鋼管
杭には、塗装あるいはポリエチレン、ウレタン系重防食
を施したものである。しかし、これらの鋼管杭の耐食性
には限界があり、塗装の場合でも寿命は１０年〜２０
年、重防食で４０年である。また、防食鋼管杭の耐食性
を高めるために、ステンレス鋼またはクラッド鋼を用い
た鋼管杭がある。この鋼管杭の場合は初期コストが高価
になる。2. Description of the Related Art Conventionally, for example, anticorrosion steel pipe piles used in the ocean have been painted or subjected to heavy polyethylene or urethane anticorrosion. However, there is a limit to the corrosion resistance of these steel pipe piles, and the life is 10 to 20 years even with painting.
40 years of heavy corrosion protection. Further, there is a steel pipe pile using stainless steel or clad steel in order to enhance the corrosion resistance of the corrosion-resistant steel pipe pile. In the case of this steel pipe pile, the initial cost is high.
【０００３】そこで、防食鋼管杭として、特開平２−２
５６７１号公報に開示されているように、鋼管杭の外表
面に耐食性および弾力性を有する接着性樹脂を被覆し、
さらにエンボス状凹凸を加工した金属薄板を被覆したも
のが提案されている。しかし、この防食鋼管杭の場合、
被覆される鋼管径および被覆長さに対応した耐食性金属
板を準備する必要があり、生産性は高くない。さらに、
太径で長大な鋼管を被覆する場合は、被覆した耐食性金
属の鋼管円周方向の継ぎ部が発生し、効果的な被覆が困
難となる。Therefore, as an anticorrosion steel pipe pile, Japanese Patent Laid-Open No. 2-2
As disclosed in Japanese Patent No. 5671, an outer surface of a steel pipe pile is coated with an adhesive resin having corrosion resistance and elasticity,
Further, there has been proposed a product coated with a thin metal plate having embossed irregularities. However, in the case of this anticorrosion steel pipe pile,
Since it is necessary to prepare a corrosion-resistant metal plate corresponding to the diameter of the steel pipe to be coated and the coating length, the productivity is not high. further,
In the case of coating a large-diameter and long steel pipe, a joint portion of the coated corrosion-resistant metal in the circumferential direction of the steel pipe occurs, which makes effective coating difficult.
【０００４】[0004]
【発明が解決しようとする課題】前述のように従来方法
では鋼管の大きさにより、これを被覆するための耐食性
金属薄板に円周方向の継手が必要になるなどの問題があ
る。また、鋼管などの筒状体に耐食性金属板をスパイラ
ル状に巻き付けて、その端縁同士を突き合わせて溶接す
る方法が考えられる。しかし、この場合は耐食性金属薄
板の端縁同士の突き合わせ部を溶接する際、薄板に穴が
あくなどスムーズな接合が難しい。また、耐食性金属薄
板の端縁同士の突き合わせ部の重なり量に過不足が生じ
ないように巻き付けるのはかなり難しく、その接合が不
完全となる。このように、鋼管に耐食性金属板をスパイ
ラル状に巻き付ける方法にあっては、その加工に問題が
あり、特に耐食性金属板の端縁同士の接合部に改良すべ
き点が残された。As described above, the conventional method has a problem in that, depending on the size of the steel pipe, the corrosion-resistant metal thin plate for covering the steel pipe requires a circumferential joint. Further, a method in which a corrosion-resistant metal plate is spirally wound around a tubular body such as a steel pipe and the edges thereof are butted against each other and welded is conceivable. However, in this case, when welding the abutting portions of the edges of the corrosion-resistant metal thin plates, it is difficult to smoothly join the holes due to the holes in the thin plates. Also, it is quite difficult to wind the overlapping portions of the edges of the corrosion-resistant metal sheet so that the overlapping portions do not have excess or deficiency, and the joining is incomplete. As described above, in the method of spirally winding the corrosion-resistant metal plate around the steel pipe, there is a problem in its processing, and there remains a point to be improved especially in the joint portion between the edges of the corrosion-resistant metal plate.
【０００５】本発明は前記の課題を解決したもので、鋼
管を耐食性金属薄板で能率良く確実に被覆し、かつこれ
を連続的に接合し得る金属被覆防食鋼管の製造方法を提
供することを目的とする。The present invention solves the above problems, and an object of the present invention is to provide a method for producing a metal-coated anticorrosion steel pipe capable of efficiently and reliably coating a steel pipe with a corrosion-resistant thin metal plate and continuously joining the steel pipe. And
【０００６】[0006]
【課題を解決するための手段】前記の目的を達成するた
め、本発明に関わる金属被覆防食鋼管の製造方法は、鋼
管の外周に耐食性金属板をスパイラル状に連続的に巻き
付けて被覆してなる金属被覆防食鋼管の製造において、
スパイラル状に巻き付ける前に耐食性金属板の片側端縁
部に帯状の耐食性金属板を抵抗シーム溶接で加圧接合
し、さらに鋼管の外周表面でスパイラル状に巻き付けら
れた耐食性金属板の他方の片側端縁部と帯状の耐食性金
属板とを鋼管とともに抵抗シーム溶接することを特徴と
する。また、前記鋼管は外周に有機または無機系の硬化
充填材が装填されていることを特徴とする。In order to achieve the above-mentioned object, the method for producing a metal-coated corrosion-resistant steel pipe according to the present invention comprises a spiral-corrosion-resistant metal plate continuously wound around the outer periphery of the steel pipe for coating. In the production of metal coated anticorrosion steel pipe,
Before spirally winding, a strip-shaped corrosion-resistant metal plate is pressure-bonded to one edge of the corrosion-resistant metal plate by resistance seam welding, and the other end of the corrosion-resistant metal plate spirally wound on the outer peripheral surface of the steel pipe. It is characterized in that the edge portion and the strip-shaped corrosion-resistant metal plate are resistance seam welded together with the steel pipe. Further, the steel pipe is characterized in that an organic or inorganic hardening filler is loaded on the outer periphery thereof.
【０００７】[0007]
【作用】本発明では、鋼管を耐食性金属板で被覆し、か
つこの耐食性金属板をスパイラル状に巻き付けることに
より、巻き付け後にこの耐食性金属板には鋼管を巻き締
める力が作用して、耐食性金属板と鋼管との一体化が図
られる。According to the present invention, the steel pipe is covered with the corrosion-resistant metal plate, and the corrosion-resistant metal plate is spirally wound, so that after the winding, a force for tightening the steel pipe acts on the corrosion-resistant metal plate, and the corrosion-resistant metal plate And the steel pipe are integrated.
【０００８】また、耐食性金属板の端縁部の内側に帯板
状金属板が存在するので、この帯状金属板が裏当て板の
作用をし、端縁同士を抵抗シーム溶接にて加圧接合し、
さらに鋼管の外周表面で、スパイラル状に巻き付けられ
た耐食性金属板の他方の片側端縁部と帯状の耐食性金属
板端縁部とを抵抗シーム溶接にて加圧接合するので、帯
状の耐食性金属板が確実に耐食性金属板下のほぼ中間に
位置した状態で鋼管に巻き付けることができる。また、
耐食性金属と帯状の耐食性金属板とを直接鋼管に溶接す
るが、一般に鋼管（鉄）と耐食性金属板の代表的なチタ
ン板をアーク溶接すると、接合部にＴｉ3 ＦｅやＴｉＣ
などの脆弱な析出物または析出相が生成される。Further, since the strip-shaped metal plate exists inside the edge of the corrosion-resistant metal plate, the strip-shaped metal plate acts as a backing plate, and the edges are pressure-welded by resistance seam welding. Then
Further, on the outer peripheral surface of the steel pipe, the other side edge of the spirally wound corrosion-resistant metal plate and the edge of the strip-shaped corrosion-resistant metal plate are pressure-bonded by resistance seam welding, so that the strip-shaped corrosion-resistant metal plate Can be wound around the steel pipe in a state in which it is positioned almost in the middle under the corrosion-resistant metal plate. Also,
The corrosion-resistant metal and the strip-shaped corrosion-resistant metal plate are directly welded to the steel pipe. Generally, when the steel pipe (iron) and a typical titanium plate of the corrosion-resistant metal plate are arc-welded, Ti 3 Fe or TiC is bonded to the joint.
Fragile precipitates or phases are produced.
【０００９】しかし、抵抗シーム溶接での接合において
は高温滞留時間が少なく、さらに溶融した析出物などを
加圧して散り状として排出できるので高速接合ができ、
かつ安定な優れた接合特性を有する金属被覆管が得られ
る。さらに、本製造法は大気雰囲気中での作業が可能な
ため、耐食性金属の接合時に雰囲気制御などの制約条件
が少ない。However, in the resistance seam welding, the high temperature residence time is short, and the molten precipitates can be pressed and discharged in a scattered form, so that high-speed welding is possible.
In addition, a metal-coated tube having stable and excellent joining characteristics can be obtained. Furthermore, since this manufacturing method can be performed in an air atmosphere, there are few restrictions such as atmosphere control when joining corrosion resistant metals.
【００１０】[0010]
【実施例】以下本発明の実施例を図を参照して説明す
る。図１は金属被覆防食鋼管の傾斜図、図２と図３は図
１のＡ−Ａ線に沿って切断したときの図で、図２は鋼管
１と耐食性金属板２が密着した例が示され、図３には鋼
管１と耐食性金属板２との間に硬化充填材４が装填され
ている例を示す。Embodiments of the present invention will now be described with reference to the drawings. 1 is an inclined view of a metal-coated anticorrosion steel pipe, FIGS. 2 and 3 are views taken along the line AA of FIG. 1, and FIG. 2 shows an example in which the steel pipe 1 and the corrosion-resistant metal plate 2 are in close contact with each other. FIG. 3 shows an example in which the hardening filler 4 is loaded between the steel pipe 1 and the corrosion resistant metal plate 2.
【００１１】図４は本発明の金属被覆防食鋼管の製造方
法を示す一例であり、鋼管１にスパイラル状に回巻する
耐食性金属板２の板厚は０．３〜１．６mm、幅は１００
０〜１２００mmである。またその材料には、チタン、チ
タン合金ステンレス、アルミニウム、亜鉛溶融メッキ鋼
板、アルミニウム溶融メッキ鋼板などが使用される。FIG. 4 is an example showing a method for producing a metal-coated corrosion-resistant steel pipe according to the present invention, in which the corrosion-resistant metal plate 2 spirally wound around the steel pipe 1 has a thickness of 0.3 to 1.6 mm and a width of 100.
It is 0 to 1200 mm. As the material, titanium, titanium alloy stainless steel, aluminum, zinc hot-dip galvanized steel sheet, aluminum hot-dip galvanized steel sheet, or the like is used.
【００１２】鋼管１は直径６００〜２０００mm、厚さ９
〜２５．１４mmである。鋼管１を回転ロール９によって
回転させながら、耐食性金属板２をスパイラル状に巻き
付けていく。The steel pipe 1 has a diameter of 600 to 2000 mm and a thickness of 9
~ 25.14 mm. While rotating the steel pipe 1 by the rotating roll 9, the corrosion-resistant metal plate 2 is spirally wound.
【００１３】また、帯板の耐食性金属板３はチタン、チ
タン合金などが使用され、板厚０．３〜１．０mm、幅５
０〜１２０mmでコイル８に巻かれていて、耐食性金属板
２のコイル５とは別のところに配置されており、このコ
イル８から帯板状金属板３は、巻き付けロール１０の手
前で耐食性金属板２の端縁２ａと抵抗シーム溶接機１１
で加圧接合した後、図に示されるように鋼管１にスパイ
ラル状に巻き付けられつつある耐食性金属板２の推進方
向に見て前側の端縁２ａの内側に位置して、しかもこの
前側の端縁２ａから幅方向に約２分の１出張った状態で
耐食性金属板２とともに移動し、鋼管１に巻き付けられ
る。The corrosion-resistant metal plate 3 of the strip is made of titanium, titanium alloy, etc., and has a plate thickness of 0.3 to 1.0 mm and a width of 5 mm.
It is wound around a coil 8 with a length of 0 to 120 mm and is arranged at a place different from the coil 5 of the corrosion-resistant metal plate 2. From this coil 8, the strip plate-shaped metal plate 3 is located before the winding roll 10 and is made of the corrosion-resistant metal. Edge 2a of plate 2 and resistance seam welder 11
After being pressure-bonded with each other, the steel pipe 1 is positioned inside the front edge 2a of the corrosion-resistant metal plate 2 which is being spirally wound around the steel pipe 1 as shown in the figure, and the front end It travels from the edge 2a in the width direction by about one-half and moves along with the corrosion-resistant metal plate 2 and is wound around the steel pipe 1.
【００１４】その際、巻き付けロール１０を介して鋼管
１との間に１０kg／cm2 以上の張力で耐食性金属板２を
引っ張りながら巻き付け、重ね合う部分を加圧しながら
耐食性金属板２の他方の端縁２ｂと帯状の耐食性金属板
３とを鋼管１とともに抵抗シーム溶接機１１で接合す
る。At this time, the corrosion-resistant metal plate 2 is wound around the steel pipe 1 through the winding roll 10 while pulling the corrosion-resistant metal plate 2 with a tension of 10 kg / cm 2 or more, and the other edge of the corrosion-resistant metal plate 2 is pressed while pressing the overlapping portion. 2b and the strip-shaped corrosion-resistant metal plate 3 are joined together with the steel pipe 1 by the resistance seam welding machine 11.
【００１５】このようにして、コイル５，８に巻かれた
耐食性金属板２と帯状の耐食性金属板３を同時に鋼管１
にスパイラルに巻き付けることで、帯状の耐食性金属板
３は耐食性金属板２の端縁接合部６の内側に円滑に介装
できる。In this way, the corrosion-resistant metal plate 2 wound around the coils 5 and 8 and the strip-shaped corrosion-resistant metal plate 3 are simultaneously formed into the steel pipe 1.
By spirally winding the strip-shaped corrosion-resistant metal plate 3, the strip-shaped corrosion-resistant metal plate 3 can be smoothly inserted inside the edge joint portion 6 of the corrosion-resistant metal plate 2.
【００１６】この端縁接合部６の接合構造を図５に示
す。図２に断面で示す金属被覆防食鋼管における接合部
構造の例が図６に示され、図３に断面で示す金属被覆防
食鋼管における接合部構造の例が図７に示されている。The joint structure of the edge joint portion 6 is shown in FIG. An example of the joint structure in the metal-coated anticorrosion steel pipe shown in cross section in FIG. 2 is shown in FIG. 6, and an example of the joint structure in the metal-coated anticorrosion steel pipe shown in cross section in FIG. 3 is shown in FIG.
【００１７】まず図５について説明すると、耐食性金属
板２および帯状の耐食性金属板３はコイルに巻かれた長
尺の材料であり、耐食性金属板２の端縁接合部６は耐食
性金属板２の一方の端縁２ａと帯状の耐食性金属板３の
端縁３ａを重ね合わせ、この重ね合わせ部を貫通させて
形成させる端部接合部６を得ることにより、一方の端縁
２ａと他方の端縁３ａとが固着される。First, referring to FIG. 5, the corrosion-resistant metal plate 2 and the strip-shaped corrosion-resistant metal plate 3 are long materials wound in a coil, and the edge joint portion 6 of the corrosion-resistant metal plate 2 is made of the corrosion-resistant metal plate 2. One end edge 2a and the other end edge are obtained by overlapping one end edge 2a and the end edge 3a of the strip-shaped corrosion-resistant metal plate 3 and obtaining an end joint 6 formed by penetrating this overlap portion. 3a is fixed.
【００１８】図６に示される接合部構造は、耐食性金属
板２および帯状の耐食性金属板３の端縁２ａ，３ａが接
合された状態で、鋼管１の外周表面にスパイラル状に連
続して巻き付けられた後、耐食性金属板２の他方の端縁
２ｂと帯状の耐食性金属板３の他方の端縁３ｂとを鋼管
１とともに抵抗シーム溶接で加圧接合されている。The joint structure shown in FIG. 6 has a spiral winding continuously wound around the outer peripheral surface of the steel pipe 1 with the edges 2a and 3a of the corrosion-resistant metal plate 2 and the strip-shaped corrosion-resistant metal plate 3 being bonded to each other. After that, the other end 2b of the corrosion-resistant metal plate 2 and the other end 3b of the strip-shaped corrosion-resistant metal plate 3 are pressure-bonded together with the steel pipe 1 by resistance seam welding.
【００１９】図７は、図３に断面で示される鋼管１と耐
食性金属板２との間に硬化充填材４が装填された耐食性
金属被覆鋼管における、接合部の例を示す。なお、接合
部７の抵抗溶接部には鋼管上の硬化充填材を装填しない
状態で抵抗溶接される。FIG. 7 shows an example of a joint in a corrosion-resistant metal-coated steel pipe having a hardening filler 4 loaded between a steel pipe 1 and a corrosion-resistant metal plate 2 shown in cross section in FIG. Note that the resistance welding portion of the joint portion 7 is resistance welded without the hardening filler on the steel pipe being loaded.
【００２０】また、硬化充填材のうち、有機接着材とし
ては、アクリル系、エポキシ系、ブチル系、ポリエチ
レン系、ビニール系の合成樹脂、鋼管表面より、クロ
メート、接着性プライマー、接着性ポリオレフィン樹脂
が順次積層されたもの、あるいは、無機系接着材として
は、モルタル、コンクリートなどを用いる。Among the cured fillers, the organic adhesives include acrylic, epoxy, butyl, polyethylene, vinyl synthetic resins, chromate, adhesive primer, and adhesive polyolefin resin from the surface of the steel pipe. Mortar, concrete, or the like is used as the sequentially laminated material or the inorganic adhesive material.
【００２１】[0021]
【発明の効果】以上説明したように、本発明の金属被覆
防食鋼管の製造方法によれば、鋼管を耐食性金属板で確
実にかつ連続的に被覆できるので金属被覆管製造の効率
に大きく寄与するものである。As described above, according to the method for producing a metal-coated corrosion-resistant steel pipe of the present invention, the steel pipe can be reliably and continuously coated with the corrosion-resistant metal plate, which greatly contributes to the efficiency of metal-coated pipe production. It is a thing.
【図１】本発明によって得られた金属被覆防食鋼管の説
明図である。FIG. 1 is an explanatory view of a metal-coated anticorrosion steel pipe obtained by the present invention.
【図２】図１のＡ−Ａ線に沿って切断した断面図であ
る。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】図１のＡ−Ａ線に沿って切断した他の実施例を
示す断面図である。3 is a cross-sectional view showing another embodiment cut along the line AA of FIG.
【図４】本発明の金属被覆防食鋼管の製造方法の一例を
示す装置概要説明図である。FIG. 4 is an apparatus outline explanatory view showing an example of a method for producing a metal-coated anticorrosion steel pipe of the present invention.
【図５】図４のＢ部における端縁接合部の拡大断面図を
示す。FIG. 5 is an enlarged cross-sectional view of an edge joint portion in a B portion of FIG.
【図６】図４のｃ部における接合部の拡大断面図を示
す。FIG. 6 is an enlarged cross-sectional view of a joint portion in section c of FIG.
【図７】図４のｃ部における他の実施例の接合部の拡大
断面図を示す。FIG. 7 is an enlarged cross-sectional view of a joint portion of another embodiment in the c portion of FIG.
１ 鋼管 ２ 耐食性金属板 ２ａ，２ｂ 耐食性金属板端縁 ３ 帯状の耐食性金属板 ３ａ，３ｂ 帯状の耐食性金属板端縁 ４ 硬化充填材 ５ 耐食性金属板コイル ６ 端縁接合部 ７ 接合部 ８ 帯状の耐食性金属板コイル ９ 回転ロール １０ 巻き付けロール １１ 抵抗シーム溶接機 1 Steel Pipe 2 Corrosion-Resistant Metal Plate 2a, 2b Corrosion-Resistant Metal Plate Edge 3 Band-shaped Corrosion-resistant Metal Plate 3a, 3b Band-shaped Corrosion-resistant Metal Plate Edge 4 Hardening Filler 5 Corrosion-resistant Metal Plate Coil 6 Edge-edge Joint 7 Joint 8 Corrosion resistant metal plate coil 9 Rotating roll 10 Winding roll 11 Resistance seam welding machine
───────────────────────────────────────────────────── フロントページの続き (72)発明者 足立 忠美 東京都中央区築地三丁目５番４号 日鐵溶 接工業株式会社内 (72)発明者 深野 真司 東京都中央区築地三丁目５番４号 日鐵溶 接工業株式会社内 (72)発明者 松岡 和己 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 (72)発明者 後藤 信弘 千葉県富津市新富20−１ 新日本製鐵株式 会社技術開発本部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadami Adachi 3-5-4 Tsukiji, Chuo-ku, Tokyo Inside Nittetsu Welding Industry Co., Ltd. (72) Shinji Fukano 3-5 Tsukiji, Chuo-ku, Tokyo No. Nippon Steel Welding Industry Co., Ltd. (72) Inventor Kazumi Matsuoka 20-1 Shintomi, Futtsu City, Chiba Prefecture Nippon Steel Co., Ltd.Technology Development Division (72) Inventor Nobuhiro Goto 20-1 Shintomi, Futtsu City, Chiba Prefecture New Nippon Steel Co., Ltd.
Claims (2)
状に連続的に巻き付けて被覆してなる金属被覆防食鋼管
の製造において、スパイラル状に巻き付ける前に耐食性
金属板の片側端縁部に帯状の耐食性金属板を抵抗シーム
溶接で加圧接合し、さらに鋼管の外周表面で、スパイラ
ル状に巻き付けられた耐食性金属板の他方の片側端縁部
と帯状の耐食性金属板とを鋼管とともに抵抗シーム溶接
することを特徴とする金属被覆管の製造方法。1. In the production of a metal-coated anticorrosion steel pipe in which a corrosion-resistant metal plate is continuously wound in a spiral shape on the outer circumference of a steel pipe to cover the steel pipe, a strip-shaped strip is formed on one side edge of the corrosion-resistant metal plate before spirally winding. The corrosion-resistant metal plate is pressure-sealed by resistance seam welding, and further, on the outer peripheral surface of the steel pipe, the other side edge of the spirally wound corrosion-resistant metal plate and the band-shaped corrosion-resistant metal plate are resistance-seam welded together with the steel pipe. A method for manufacturing a metal-coated tube, characterized in that
化充填材が装填されていることを特徴とする請求項１に
記載の金属被覆防食鋼管の製造方法。2. The method for producing a metal-coated corrosion-resistant steel pipe according to claim 1, wherein an outer circumference of the steel pipe is filled with an organic or inorganic hardening filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6842195A JPH08257635A (en) | 1995-03-27 | 1995-03-27 | Method for producing metal-coated anticorrosion steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6842195A JPH08257635A (en) | 1995-03-27 | 1995-03-27 | Method for producing metal-coated anticorrosion steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08257635A true JPH08257635A (en) | 1996-10-08 |
Family
ID=13373210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6842195A Withdrawn JPH08257635A (en) | 1995-03-27 | 1995-03-27 | Method for producing metal-coated anticorrosion steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08257635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030069353A (en) * | 2002-02-20 | 2003-08-27 | 김진형 | method for manufacturing a dual pipe |
-
1995
- 1995-03-27 JP JP6842195A patent/JPH08257635A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030069353A (en) * | 2002-02-20 | 2003-08-27 | 김진형 | method for manufacturing a dual pipe |
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| Date | Code | Title | Description |
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| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020604 |