EP0059070A1 - Barres d'acier protégées contre la corrosion - Google Patents

Barres d'acier protégées contre la corrosion Download PDF

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Publication number
EP0059070A1
EP0059070A1 EP82300810A EP82300810A EP0059070A1 EP 0059070 A1 EP0059070 A1 EP 0059070A1 EP 82300810 A EP82300810 A EP 82300810A EP 82300810 A EP82300810 A EP 82300810A EP 0059070 A1 EP0059070 A1 EP 0059070A1
Authority
EP
European Patent Office
Prior art keywords
stainless steel
steel
bar
corrosion
sleeve
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Withdrawn
Application number
EP82300810A
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German (de)
English (en)
Inventor
David Michael Howarth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Spencer Clark Metal Industries Ltd
Original Assignee
Spencer Clark Metal Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Spencer Clark Metal Industries Ltd filed Critical Spencer Clark Metal Industries Ltd
Publication of EP0059070A1 publication Critical patent/EP0059070A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F15/00—Other methods of preventing corrosion or incrustation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/015—Anti-corrosion coatings or treating compositions, e.g. containing waterglass or based on another metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions

Definitions

  • This invention relates to steel corrosion-protected members such as reinforcement members and tension members for ground anchors, tie bars, reinforcing bars, rock anchors and the like.
  • Reinforcing bars are normally made of mild steel and are used in construction of buildings, bridges, highways, piers, etc., very often in corrosive environments such as salt water environments.
  • Corrosion of reinforcement is recognised as the principal cause of premature deterioration of concrete structures.
  • the corrosion has been associated with a number of conditions such as use of poor quality concrete (contaminated aggregates), low concrete cover, concrete subjected to chloride in penetration (marine environment, de-icing salts) or chloride set accelerators.
  • the products of corrosion result in a volume change and at best cause rust staining and spalling of the structure and at worst cause structural weakening.
  • a corrosion-protected steel reinforcement member or tension member comprises a mild steel core with a cladding of stainless steel or other corrosion resistant metal or alloy such as mickel/copper alloy.
  • a preferred stainless steel is type 316 which is nominally 18% chromium, 11% nickel and 2% molybdenum but other grades such as types 304 and 321 may be used.
  • a preferred nickel/copper alloy is Morel 400 (70% nickel, 30% copper).
  • the core material may be, for example, a mild steel with up to 0.25% carbon but minor additions of Niobium or Vanadium or both may be employed. If creep resistance is a particular requirement the core may include up to 2% of the chromium and molybdenum.
  • the invention comprises a method of manufacturing a corrosion-protected steel reinforcement member or tension member comprising the steps of:-
  • a clad billet may be made by casting stainless on a mild steel base material.
  • the hot rolling is preferably carried out at a temperature in the range 700°C to 1250°C and within this a narrower range of say 800°C to 1000°C is preferred depending on the hot workability characteristics of the disimilar metals employed and the final mechanical properties demanded.
  • the rolling temperature affects final mechanical properties of the clad bar.
  • Conventional hot working of a clad bar would normally result in a finish rolling temperature in excess of 1000°C i.e. the properties would be those levels obtainable from a straight air cool from 1000°C.
  • This order of finish rolling temperature is satisfactory to obtain specified strength properties in rolling solid high yield reinforcing bar.
  • the strength in any standard section is diluted i.e. austenitic stainless is of lower strength than high yield bar to'say B.S. 4449. There is of course no way of hardening the stainless in ribbed form (smooth bar could be cold drawn) so we resort to warm working.
  • Warm working in the present bar route consists of rolling the billet to a bar conventionally up to the last three passes. At this stage the hot bar is held on the mill floor until the temperature drops to about 750°C. On reaching this lower temperature the bar then goes through the final passes. This results in a significant improvement in the yield strength of the stainless steel and brings it to the same order as high yield reinforcing bar. The warm working process has little or no effect on strength of the carbon steel- insert material.
  • the cut ends of the reinforcing bar may be sealed by applying heat shrinkable plastic caps which may for example be of polythene or any other heat shrinkable plastic.
  • the cut ends of the bar may be sealed by means of a resin or plastic coating composition which may be applied by brushing or dipping the ends into the liquid composition.
  • ends may be sealed by the application of a stainless cap using a resin adhesive or by using a friction welded cap.
  • the end seal may be provided by incorporating a short length of stainless insert in the tube prior to hot-rolling.
  • the mild steel-rod or bar and the stainless steel tube are very thoroughly cleaned and degreased so as to remove any dirt, grease and oxide film that may be on either. It is particularly important to remove oxide film from the internal surface of the stainless steel tube so as to ensure a good weld contact between that surface and the external surface of the mild steel rod or bar.
  • An alternative method of-manufacture involves casting rather than hot rolling. Either a stainless steel cladding is cast onto a mild steel core or a stainless steel shell is cast first-and then filled with mild steel.
  • the first method employs refractory cores or sleeves in an ingot mould.
  • An ingot mould is made up containing a refractory core which is positioned down the central axis.
  • the first metal e.g. stainless steel
  • the first metal would then be teemed through the gap between the mould wall and the refractory core.
  • the refractory core or sleeve is pulled out of the mould, and the space left is filled up with a molten second metal e.g. mild steel.
  • the second method is to replace the refractory core or sleeve in the ingot mould with the first of the two dissimilar metals e.g. suspend a mild steel core in the centre of an ingot mould and cast stainless between the mild steel and the ingot mould wall.
  • a steel reinforcement member or a tension member may be manufactured from a solid extruded composite billet comprising a core of mild steel and an outer layer of stainless steel or copper, the extruded billet being rolled down to the size required for use as a reinforcement member or a tension member.
  • the invention relates to a ground anchor or tie bar which comprises a bar of high tensile steel which has a coating or cladding of stainless steel throughout its length except for a threaded portion of the bar at at least one end of the bar.
  • ground anchors and tie bars are often required to extend for a considerable distance into the ground, rock, or other sub-structure. It is often necessary to join successive lengths of bars together.
  • a ground anchor or tie bar comprises a number of lengths of bar each with stainless steel cladding or coating and threaded ends, joined by means of internally threaded jointing members, or turnbuckles, the joints being made corrosion resistant.
  • the load may be entirely carried within the core, the coating or cladding playing no part in carrying longitudinal stresses.
  • the joints may be made corrosion resistant, for instance, by injecting a resin or other corrosion resistant material through-a hole in the jointing member or turnbuckle after it has been-tightened in place.
  • the exposed threads at the ends of the tie bar may also be coated with stainless steel or chromium or cadmium plated or otherwise protected.
  • An optional method of providing further corrosion protection is to attach a heat shrunk plastic sleeve to the joint between adjacent bars so that the ends of the heat shrunk sleeves grip and overlap the adjacent ends of the stainless steel clad portions of the bars and create a damp proof and water tight seal.
  • This heat shrink sleeve could also be filled with a resin which might for instance be a foam .resin.
  • the inner end of the ground anchor is protected either by welding a stainless steel bottom plate onto the bottom end of the bar so that the stainless steel-bottom plate is in contact with the adjacent stainless steel cladding or by heat shrinking a plastic sleeve or cover-onto the bottom end.
  • the top plate of the anchor or tie bar has attached to it a stainless steel tube or sleeve preferably welded to the under side of the top plate, thus protecting the high tensile or carbon steel material of the core of the bar up to-or beyond the point of commencement of the stainless steel sleeve.
  • a length of mild steel reinforcement bar or rod 100 as illustrated in Fig. 1 is subject to pickling t degreasing and general cleaning so as to remove any layer of grease, dirt or oxide.
  • the bar or rod 100 may be for example, 32mm in diameter and made of 0.25% carbon steel.
  • a convenient length might be anything between 1m and 3m depending on the ultimate ppplication of the reinforcement bar or rod which is being made.
  • a heavy gauge stainless steel tube 101 (Fig. 2) of wall thickness appropriate to the final envelope thickness and made, typically, of 18% chromium, 8% nickel steel is then degreased_and cleaned so as to remove grease, dirt and oxide film.
  • the diameter of the tube 101 is so chosen that it is a simple push fit onto the mild steel bar or rod 100 and of substantially the same length as the bar or rod.
  • One end 102 or both ends of the stainless steel tube is or are then welded to the mild-steel bar or rod as illustrated in Fig. 3.
  • the assembly 104 of mild steel bar or rod 100 and stainless steel tube 101 is then placed in a furnace 103 and heated to a temperature between 750°C and 1250°C and then promptly hot rolled by means of a conventional hot rolling mill 105 with ribbed rolls 106 which will apply the usual reinforcement ribs 107 to the reinforcement bar and at the same time will cause the stainless steel tube 101 to become firmly welded throughout its length to the mild steel bar or rod 100.
  • the mild steel bar with its cladding of tube is in effect used as a billet and rolled conventionally to form a clad bar in whatever diameter is required with whatever pattern of ribs is required.
  • plastic end caps 108 may be heat shrunk onto the two ends of the bar as illustrated in Fig. 5.
  • the ends may be sealed by using resin or other suitable sealing compound as previously described.
  • the ends may be sealed with a resin and then plastic end caps heat shrunk on.
  • Fig. 6 shows a portion of a typical ribbed reinforing bar produced in accordance with the invention.
  • the stainless steel is chosen for the particular application, but basically what is required is a standard austenitic stainless steel and a conventional mild steel for the rod or bar.
  • the corrosion resistant reinforcement bar will have similar mechanical properties to that of a conventional mild steel reinforcing bar but will be suitable for use in for example, concrete structures where corrosion resistance is necessary, such as sea walls, bridges harbour construction, chemical plants etc.
  • the reinforcing bar produced in accordance with this invention may also be used to form rock anchors and other strengthening and reinforcing devices which are commonly used in concrete construction and ground stabilisation.
  • reinforcing bars for building industry use is based on:- a) a core material of 0.25°o carbon maximum with possibly minor additions of niobium and vanadium; and (b) an outer cladding of nominally 18% chromium, 8% nickel. This stainless grade may be specified to type 316, 304 or 321. These bars would be used where corrosion resistance is required.
  • the next stage is to use an envelope with greater corrosion resistance than say type 316 stainless, e.g. Monel 400 (70% Ni 30% Cu).
  • Another category is where a combination of high strength and corrosion resistance is demanded, where the insert is a high strength alloy steel and the envelope is again type 316.
  • the clad bar may have to be hardened and tempered to obtain the high strength levels.
  • the insert material could be say 2% Cr.Mo creep resistant material and the outside envelope type 316.
  • the rock anchor which might also be adapted for use as a tie bolt, or other form of ground anchor, consists basically of a high tensile steel core 10 on which is a stainless steel sheath 11, the sheath being smooth or ribbed as shown at 12. Both ends of the bar 10 are threaded as shown at 13 and 14 respectively.
  • Two such rock anchors or lengths of tie bar may be connected together, as shown in Figure 1, by means of a connecting member, or turnbuckle 15, which is internally threaded with threads of opposite hand. These threads engage corresponding threads of opposite hand formed on the threaded extension 14 of the bar and on a similar threaded extension 14a of an adjacent length of the rock anchor.
  • the turnbuckle 15 has an injector hole 16 by means of which resin or other sealant may be injected into the space 17 between the ends of the threaded portions 14 and 14a so that the sealant will flow into the threads and seal them.
  • the turnbuckle may itself be made of stainless steel.
  • a heat shrink plastic sleeve 18 is shrunk onto the adjacent ends of the two rock anchor lengths so as to form a complete seal enclosing the turnbuckle and the joint.
  • This heat shrink sleeve may itself be filled with resin or other corrosion resistant material which may for example be a foamed resin or polystyrene so as to provide complete damp and water proof protection.
  • the lower end of the rock anchor may have a protective stainless steel end plate 19 welded to it, the end plate being welded to the stainless steel cladding at this point so as to ensure a complete seal.
  • Threads can be formed on top of the cladding by roll threading, without exposing the core.
  • the shrink sleeve preferably overlaps the stainless steel cladding by not less than three diameters of the bar.
  • a rock anchor is required with a resistance to over-turning a plate larger than the diameter of the bar may be attached to the bottom end either by conventional welding or by friction welding.
  • FIG. 1 One way of doing this as shown in Figure 1 is to employ a stainless steel tube 20 welded to a stainless steel top plate 21 and extending down so as to overlap stainless steel cladding of the core. This tube is made long enough to allow for anchor adjustment during pretensioning. Above the end plate 21 is located a stainless steel washer 22 and a load beating nut 23 which is used for stressing the anchor. A further stainless steel cap nut 24 is applied above this to protect the exposed threads. This cap nut 24 is drilled and tapped with a small hole 25 to permit injection of sealant into the space within the nut and down the thread.
  • the main support plate is also drilled and tapped at 26 to permit the injection of sealant into the space beneath the load carrying nut and into the space formed between the ground anchor/rock bolt and the tubular sleeve 20.
  • sealant into the space beneath the load carrying nut and into the space formed between the ground anchor/rock bolt and the tubular sleeve 20.
  • ground anchors may be used in multiple form i.e. with two, three or more ground anchors passing through a single top plate or end plate. They may be used, for example, in hard rock or concrete and may be grouted into place in the hole in the rock, concrete or other formation in the normal way.
  • the manufacture of the basic bars which form the rock anchors may be carried out as described above in relation to reinforcing bars.
  • the bars which form the rock anchors may be formed from solid extruded composite billet i.e. a composite billet of stainless steel and high tensile steel.
  • the extruded billet may be formed so as to give the correct proportions of stainless steel cladding to mild steel core and the extruded billet may be rolled down to the size required for- a particular rock anchor or tie bolt.
  • a sleeve of each of the-companent materials is prepared either from a pierced billet or solid bar.
  • the two sleeves are machined to close tolerances and the inner sleeve of high tensile steel fitted to the outer sleeve of stainless steel to form a compoaite billet.
  • the ends of the sleeves are welded to prevent contamination and the composite billet is heated to extrusion temperature. Glass lubricant is applied to the billet which is then transferred to a 3,000 tonne extrusion press.
  • a mandrel is pushed through the axis of the composite billet and then redaction and elongation are effected by squeezing the billet through the annular space between a die and a mandrel.
  • the extruded billet may be then cold reduced or hot reduced employing conventional methods. The usual heat treatment and surface finishes may then be used. If desired the finished reduced billet, assuming it is of the size required for making a rock anchor, may then be passed through-rolling dies which form conventional. patterns of ribs on the exterior surface of the stainless steel cladding. As seen in the drawings, the stainless steel cladding- is a minor proportion of the corss section and obviously does-not carry the tensile loads.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
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EP82300810A 1981-02-24 1982-02-17 Barres d'acier protégées contre la corrosion Withdrawn EP0059070A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8105742 1981-02-24
GB8105742 1981-02-24
GB8110391 1981-04-02
GB8110391 1981-04-02

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EP0059070A1 true EP0059070A1 (fr) 1982-09-01

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9013648U1 (fr) * 1990-09-28 1992-02-06 Interatom Gmbh, 5060 Bergisch Gladbach, De
DE4105159A1 (de) * 1991-02-20 1992-08-27 K A Schwan Vorrichtung zum beschichten und rippen von betonstahl
EP0974708A1 (fr) * 1998-07-24 2000-01-26 Dyckerhoff & Widmann Aktiengesellschaft Membre tendu en acier protégé contre la corrosion
EP0976541A1 (fr) * 1998-07-30 2000-02-02 Aster Fil composite comprenant une ame en acier au carbone et une couche externe en acier inoxydable
FR2781814A1 (fr) * 1998-07-30 2000-02-04 Aster Fil composite comprenant une ame en acier au carbone et une couche externe en acier inoxydable
WO2002077386A1 (fr) * 2001-03-23 2002-10-03 Hardy, Harmon, Sidney Procede de fabrication de produits metalliques resistant a la corrosion
WO2003069088A1 (fr) * 2002-02-18 2003-08-21 Max Aicher Acier d'armature cannele tubulaire, procede de fabrication d'un acier d'armature cannele tubulaire et son utilisation
US7182786B2 (en) 2002-04-25 2007-02-27 Zimmer Technology, Inc. Modular bone implant, tool, and method
CN101696561B (zh) * 2009-11-09 2011-01-19 上海交通大学 水泥混凝土路面拉杆
WO2011048364A1 (fr) * 2009-10-22 2011-04-28 Whitehead, John, Anthony, Bailie Produits métalliques résistant à la corrosion
WO2012143668A1 (fr) 2011-04-18 2012-10-26 Cladinox International Limited Procédés de production de produits en acier plaqué
CN104772362A (zh) * 2015-04-21 2015-07-15 承德石油高等专科学校 拉拔-钎焊制备不锈钢/碳钢复合钢筋的工艺
CN107023119A (zh) * 2017-03-07 2017-08-08 河钢股份有限公司承德分公司 不锈钢复合耐腐蚀带肋钢筋及其制造方法
CN109372007A (zh) * 2018-11-28 2019-02-22 长江三峡集团福建能源投资有限公司 一种海上风力机组安装锚栓笼用密封锚栓及其施工方法
CN110202689A (zh) * 2019-07-08 2019-09-06 湖北思泽新能源科技有限公司 一种连接钢筋的液压钳
CN110469055A (zh) * 2018-05-09 2019-11-19 新疆北方建设集团有限公司 一种具有可弯曲边缘的不锈钢筋
CN113863576A (zh) * 2021-10-26 2021-12-31 北部湾大学 一种采用不锈钢覆层钢筋的海拌海养钢筋混凝土
RU209871U1 (ru) * 2021-08-18 2022-03-23 Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" Гидроизолирующий элемент для арматуры
WO2022122468A3 (fr) * 2020-12-10 2022-08-04 Geobrugg Ag Dispositif anti-corrosion, système anti-corrosion, système de stabilisation des talus résistant à la corrosion et procédé d'ancrage résistant à la corrosion d'un élément d'ancrage géotechnique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731780B2 (de) * 1976-07-26 1980-05-22 Asahi Kasei Kogyo K.K., Osaka Verfahren zur Herstellung von plattierten Stahlrohren
US4242150A (en) * 1979-05-25 1980-12-30 Maxwell Herris M Method of producing reinforcing bars with corrosion resistant coating
DE2944878A1 (de) * 1979-11-07 1981-05-21 Dyckerhoff & Widmann AG, 8000 München Korrosionsgeschuetztes bewehrungselement fuer beton

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731780B2 (de) * 1976-07-26 1980-05-22 Asahi Kasei Kogyo K.K., Osaka Verfahren zur Herstellung von plattierten Stahlrohren
US4242150A (en) * 1979-05-25 1980-12-30 Maxwell Herris M Method of producing reinforcing bars with corrosion resistant coating
DE2944878A1 (de) * 1979-11-07 1981-05-21 Dyckerhoff & Widmann AG, 8000 München Korrosionsgeschuetztes bewehrungselement fuer beton

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9013648U1 (fr) * 1990-09-28 1992-02-06 Interatom Gmbh, 5060 Bergisch Gladbach, De
DE4105159A1 (de) * 1991-02-20 1992-08-27 K A Schwan Vorrichtung zum beschichten und rippen von betonstahl
EP0974708A1 (fr) * 1998-07-24 2000-01-26 Dyckerhoff & Widmann Aktiengesellschaft Membre tendu en acier protégé contre la corrosion
EP0976541A1 (fr) * 1998-07-30 2000-02-02 Aster Fil composite comprenant une ame en acier au carbone et une couche externe en acier inoxydable
FR2781814A1 (fr) * 1998-07-30 2000-02-04 Aster Fil composite comprenant une ame en acier au carbone et une couche externe en acier inoxydable
US6322907B1 (en) 1998-07-30 2001-11-27 Aster Composite wire comprising a carbon-steel core and a stainless-steel outer layer
WO2002077386A1 (fr) * 2001-03-23 2002-10-03 Hardy, Harmon, Sidney Procede de fabrication de produits metalliques resistant a la corrosion
WO2003069088A1 (fr) * 2002-02-18 2003-08-21 Max Aicher Acier d'armature cannele tubulaire, procede de fabrication d'un acier d'armature cannele tubulaire et son utilisation
EP1512805A1 (fr) * 2002-02-18 2005-03-09 Max Aicher Acier d'armature cannelé tubulaire, procédé de fabrication d'un acier d'armature cannelé tubulaire et utilisation d'un acier d'armature tubulaire
US7182786B2 (en) 2002-04-25 2007-02-27 Zimmer Technology, Inc. Modular bone implant, tool, and method
US9005767B2 (en) 2009-10-22 2015-04-14 Cladinox International Limited Corrosion resistant metal products
WO2011048364A1 (fr) * 2009-10-22 2011-04-28 Whitehead, John, Anthony, Bailie Produits métalliques résistant à la corrosion
WO2011048362A1 (fr) * 2009-10-22 2011-04-28 Whitehead, John, Anthony, Bailie Procédés pour la fabrication de produits en acier plaqué
CN102712025A (zh) * 2009-10-22 2012-10-03 克拉迪劳斯国际有限公司 耐腐蚀性金属产品
CN102712025B (zh) * 2009-10-22 2015-04-15 克拉迪劳斯国际有限公司 耐腐蚀性金属产品
RU2588929C2 (ru) * 2009-10-22 2016-07-10 Кладинокс Интернейшонал Лимитед Коррозионно-устойчивые металлические изделия
AU2010309568B2 (en) * 2009-10-22 2016-10-13 Cladinox International Limited Corrosion resistant metal products
CN101696561B (zh) * 2009-11-09 2011-01-19 上海交通大学 水泥混凝土路面拉杆
WO2012143668A1 (fr) 2011-04-18 2012-10-26 Cladinox International Limited Procédés de production de produits en acier plaqué
CN103476519A (zh) * 2011-04-18 2013-12-25 克拉迪劳斯国际有限公司 生产包层钢产品的方法
CN104772362A (zh) * 2015-04-21 2015-07-15 承德石油高等专科学校 拉拔-钎焊制备不锈钢/碳钢复合钢筋的工艺
CN107023119A (zh) * 2017-03-07 2017-08-08 河钢股份有限公司承德分公司 不锈钢复合耐腐蚀带肋钢筋及其制造方法
CN110469055A (zh) * 2018-05-09 2019-11-19 新疆北方建设集团有限公司 一种具有可弯曲边缘的不锈钢筋
CN110469055B (zh) * 2018-05-09 2024-03-01 新疆北方建设集团有限公司 一种具有可弯曲边缘的不锈钢筋
CN109372007A (zh) * 2018-11-28 2019-02-22 长江三峡集团福建能源投资有限公司 一种海上风力机组安装锚栓笼用密封锚栓及其施工方法
CN109372007B (zh) * 2018-11-28 2023-11-07 长江三峡集团福建能源投资有限公司 一种海上风力机组安装锚栓笼用密封锚栓及其施工方法
CN110202689A (zh) * 2019-07-08 2019-09-06 湖北思泽新能源科技有限公司 一种连接钢筋的液压钳
CN110202689B (zh) * 2019-07-08 2020-06-23 湖北思泽新能源科技有限公司 一种连接钢筋的液压钳
WO2022122468A3 (fr) * 2020-12-10 2022-08-04 Geobrugg Ag Dispositif anti-corrosion, système anti-corrosion, système de stabilisation des talus résistant à la corrosion et procédé d'ancrage résistant à la corrosion d'un élément d'ancrage géotechnique
RU209871U1 (ru) * 2021-08-18 2022-03-23 Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" Гидроизолирующий элемент для арматуры
CN113863576A (zh) * 2021-10-26 2021-12-31 北部湾大学 一种采用不锈钢覆层钢筋的海拌海养钢筋混凝土
CN113863576B (zh) * 2021-10-26 2023-09-15 北部湾大学 一种采用不锈钢覆层钢筋的海拌海养钢筋混凝土

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