公开(公告)号：US06245183B1

公开(公告)日：2001-06-12

申请号：US08452330

申请日：1995-05-26

Applicant: Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

Inventor： Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

IPC: B29C4702

CPC classification number: B32B1/08 ,  B29C63/486 ,  B32B15/08 ,  B32B27/08 ,  B32B37/153 ,  B32B2311/20 ,  B32B2377/00 ,  B32B2597/00 ,  F16L9/147 ,  F16L58/1009 ,  F16L58/1045 ,  F16L58/109 ,  Y10S138/07

Abstract: A multi-layer tube comprises a metal tube having an outer surface and a zinc layer bonded to the metal tube outer surface, wherein the zinc layer is selected from the group consisting of zinc plating, zinc nickel alloys, zinc cobalt alloys, zinc aluminum alloys, and mixtures thereof. A surface treatment layer is bonded to the zinc layer, wherein the surface treatment layer is selected from the group consisting of a zinc/aluminum/rare earth alloy, phosphate, chromate and mixtures thereof. A first polymeric layer is bonded to the surface treatment layer, wherein the first polymeric layer is selected from the group consisting of a thermoplastic elastomer, an ionomer, a nylon, a fluoropolymer, and mixtures thereof. A second polymeric layer is bonded to the first polymeric layer, wherein the second polymeric layer is selected from the group consisting of a nylon, a thermoplastic elastomer, a fluoropolymer, and mixtures thereof. A process for manufacturing a multi-layer tubing for conveying fluids in a vehicle system comprises the step of extruding multiple layers of a melt-processible thermoplastic to a pretreated metal tube having an external surface with at least a zinc based coating and a sealant coating on top of the zinc based coating.

Abstract translation: 多层管包括具有与金属管外表面结合的外表面和锌层的金属管，其中锌层选自镀锌，锌镍合金，锌钴合金，锌铝合金 ，及其混合物。 表面处理层与锌层结合，其中表面处理层选自锌/铝/稀土合金，磷酸盐，铬酸盐及其混合物。 第一聚合物层结合到表面处理层，其中第一聚合物层选自热塑性弹性体，离聚物，尼龙，含氟聚合物及其混合物。 第二聚合物层结合到第一聚合物层，其中第二聚合物层选自尼龙，热塑性弹性体，含氟聚合物及其混合物。 用于制造用于在车辆系统中输送流体的多层管道的方法包括将具有可熔融加工的热塑性塑料的多层挤出到具有外表面的预处理的金属管的步骤，所述外表面具有至少锌基涂层和密封剂涂层 锌基涂层顶部。

公开(公告)号：US5374089A

公开(公告)日：1994-12-20

申请号：US954140

申请日：1992-09-29

Applicant: Robert Davie ,  David Noone ,  Gary Klinger ,  Craig Cheney ,  George Szabo ,  Duane Pontbriand ,  Anthony Carman ,  James D. McDaniel

Inventor： Robert Davie ,  David Noone ,  Gary Klinger ,  Craig Cheney ,  George Szabo ,  Duane Pontbriand ,  Anthony Carman ,  James D. McDaniel

IPC: F16L37/08 ,  F16L19/028 ,  F16L37/084 ,  F16L37/088 ,  F16L39/02 ,  F16L21/00

CPC classification number: F16L37/084 ,  F16L19/028 ,  F16L37/088 ,  F16L2201/80 ,  Y10S285/906

Abstract: The present invention is a high pressure quick connector especially for use in connecting brake lines of a vehicle. The connector includes a housing which selectively receives a tube retainer cap. Retaining means such as a garter spring or snap ring allow for a low force insertion of the cap into the housing with an very high pull-off force. The cap is used to trap a tube with a bead upset, and the tube may be removed after the cap is unlocked. A second way of releasing the tube includes the use of a tube retainer plug selectively received in the cap, the upset trapped between the plug and cap. The plug can be removed while the cap is still locked in the housing, releasing the tube. A release tool may be used to unlock the cap from the housing. An insertion indicator ring is used to establish the locking of the cap within the housing. A dust boot prevents contaminants from interfering with the operation of the connector.

Abstract translation: 本发明是特别用于连接车辆制动线路的高压快速连接器。 连接器包括选择性地容纳管保持盖的壳体。 保持装置例如卡箍弹簧或卡环允许以非常高的牵引力将盖子小力插入壳体。 帽用于捕获具有胎圈镦粗的管，并且在帽被解锁之后可以移除管。 释放管的第二种方式包括使用选择性地容纳在盖中的管保持器塞，镦粗被困在插头和帽之间。 当盖子仍然锁定在壳体中时，可以移除插头，释放管子。 可以使用释放工具来将盖从壳体解锁。 插入指示器环用于建立壳体内的帽的锁定。 防尘罩防止污染物干扰连接器的操作。

公开(公告)号：US5867883A

公开(公告)日：1999-02-09

申请号：US897369

申请日：1997-07-21

Applicant: Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

Inventor： Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

IPC: B29C63/48 ,  B32B1/08 ,  B32B15/08 ,  B32B37/15 ,  F16L9/147 ,  F16L58/10 ,  B21D35/00 ,  B05D3/12 ,  B23P19/04

CPC classification number: B32B15/08 ,  B29C63/486 ,  B32B1/08 ,  F16L58/1009 ,  F16L58/1045 ,  F16L58/109 ,  F16L9/147 ,  B32B37/153 ,  Y10T29/49888 ,  Y10T29/49906 ,  Y10T428/12549 ,  Y10T428/1359

Abstract: A multi-layer tube having a metal tube having an outer surface and a zinc layer bonded to the metal tube outer surface. The zinc layer being selected from the group consisting of zinc plating, zinc nickel alloys, zinc cobalt alloys, zinc aluminum alloys, and mixtures thereof. A surface treatment layer is bonded to the zinc layer, wherein the surface treatment layer is selected from the group consisting of a zinc/aluminum/rare earth alloy, phosphate, chromate and mixtures thereof. A first polymeric layer is bonded to the surface treatment layer, wherein the first polymeric layer is selected from the group consisting of a thermoplastic elastomer, an ionomer, a nylon, a fluoropolymer, and mixtures thereof. A second polymeric layer is bonded to the first polymeric layer, wherein the second polymeric layer is selected from the group consisting of a nylon, a thermoplastic elastomer, a fluoropolymer, and mixtures thereof. The tube also has a continuous interior layer made of non-reactive material which is preferably made of a polymeric material which is substantially non-reactive in the presence of short chain alcohols. The process for manufacturing the multi-layer tubing of the present invention also includes the steps of positioning a length of non-reactive tubing into the interior of unsealed metal tube, sealing the metal tube with the non-reactive tubing contained within and extruding multiple layers of a melt-processible thermoplastic onto the external surface metal tube the external surface can be pretreated with at least a zinc based coating and a sealant coating on top of the zinc based coating.

Abstract translation: 一种多层管，其具有金属管，该金属管具有外表面和锌层结合到金属管外表面。 锌层选自镀锌，锌镍合金，锌钴合金，锌铝合金及其混合物。 表面处理层与锌层结合，其中表面处理层选自锌/铝/稀土合金，磷酸盐，铬酸盐及其混合物。 第一聚合物层结合到表面处理层，其中第一聚合物层选自热塑性弹性体，离聚物，尼龙，含氟聚合物及其混合物。 第二聚合物层结合到第一聚合物层，其中第二聚合物层选自尼龙，热塑性弹性体，含氟聚合物及其混合物。 管还具有由非反应性材料制成的连续内层，其优选由在短链醇存在下基本上不反应的聚合材料制成。 用于制造本发明的多层管的方法还包括以下步骤：将一定长度的非反应性管材定位到非密封金属管的内部，用包含在其内并挤出多层的非反应性管道密封金属管 可熔融加工的热塑性材料在外表面金属管上，外表面可以用至少锌基涂层和在锌基涂层顶部的密封剂涂层进行预处理。

公开(公告)号：US5771940A

公开(公告)日：1998-06-30

申请号：US797717

申请日：1997-02-11

Applicant: Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

Inventor： Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

IPC: B29C63/48 ,  B32B15/08 ,  B32B37/15 ,  F16L9/14 ,  F16L9/147 ,  F16L58/10

CPC classification number: F16L58/1009 ,  B29C63/486 ,  B32B15/08 ,  F16L58/1045 ,  F16L58/109 ,  F16L9/147 ,  B32B37/153 ,  Y10S138/07

Abstract: A multi-layer tube comprises a metal tube having an outer surface and a zinc layer bonded to the metal tube outer surface, wherein the zinc layer is selected from the group consisting of zinc plating, zinc nickel alloys, zinc cobalt alloys, zinc aluminum alloys, and mixtures thereof. A surface treatment layer is bonded to the zinc layer, wherein the surface treatment layer is selected from the group consisting of a zinc/aluminum/rare earth alloy, phosphate, chromate and mixtures thereof. A first polymeric layer is bonded to the surface treatment layer, wherein the first polymeric layer is selected from the group consisting of a thermoplastic elastomer, an ionomer, a nylon, a fluoropolymer, and mixtures thereof. A second polymeric layer is bonded to the first polymeric layer, wherein the second polymeric layer is selected from the group consisting of a nylon, a thermoplastic elastomer, a fluoropolymer, and mixtures thereof. A process for manufacturing a multi-layer tubing for conveying fluids in a vehicle system comprises the step of extruding multiple layers of a melt-processible thermoplastic to a pretreated metal tube having an external surface with at least a zinc based coating and a sealant coating on top of the zinc based coating.

公开(公告)号：US5635305A

公开(公告)日：1997-06-03

申请号：US446219

申请日：1995-05-22

Applicant: David J. Haga ,  James D. McDaniel ,  Roger B. Nagel

Inventor： David J. Haga ,  James D. McDaniel ,  Roger B. Nagel

IPC: B22D19/00 ,  B32B3/20

CPC classification number: B22D19/0072 ,  Y10T428/12229 ,  Y10T428/12292 ,  Y10T428/12361

Abstract: An end fitting closes at least one end of a passageway having an external periphery and an internal periphery to be cast-in-place within a part. A fitting body has at least one elongated, blind-ended aperture formed therein. The aperture is defined at least in part by a first surface having a complimentary shape with respect to the external periphery of the cast-in-place passageway for receiving an end of the passageway disposed extending at least partially therein to close the passageway during casting of the part. The fitting body is composed of material essentially identical to material being used during casting of the part. The fitting body is positionable within a casting mold for forming the part to be cast, such that machining the cast part after casting opens the blind-end of the fitting to allow fluid flow through the passageway cast-in-place within the part. The end fitting may include a shaped aperture, such as a hexagonal shape or oval shape, for receiving a complimentary shaped nut on the conduit or complimentary shaped passageway to provide orientation of the passageway with respect to the fitting when connected thereto.

Abstract translation: 端部配件将具有外周边和内周边的通道的至少一端封闭在一部分内就地放置。 装配体具有形成在其中的至少一个细长的盲端孔。 所述孔至少部分地由第一表面限定，所述第一表面相对于现浇通道的外周具有互补形状，用于接收设置在其中的至少部分延伸的通道的端部，以在铸造期间关闭通道 那个部分。 配件主体由与铸件中使用的材料基本相同的材料组成。 配件主体可定位在用于形成待铸造部件的铸模内，使得铸造后的铸造部件的加工打开配件的盲端，以允许流体流过在部件内就位的通道。 端部配件可以包括诸如六边形或椭圆形的成形孔，用于在导管或互补的成形通道上接收互补的成形螺母，以在连接到通道时提供通道相对于配件的取向。

公开(公告)号：US6003562A

公开(公告)日：1999-12-21

申请号：US452331

申请日：1995-05-26

Applicant: Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

Inventor： Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

IPC: B29C63/48 ,  B32B15/08 ,  B32B37/15 ,  F16L9/14 ,  F16L9/147 ,  F16L58/10 ,  F16L11/12

CPC classification number: F16L58/1009 ,  B29C63/486 ,  B32B15/08 ,  F16L58/1045 ,  F16L58/109 ,  F16L9/147 ,  B32B37/153 ,  Y10S138/07

Abstract: A multi-layer tube comprises a metal tube having an outer surface and a zinc layer bonded to the metal tube outer surface, wherein the zinc layer is selected from the group consisting of zinc plating, zinc nickel alloys, zinc cobalt alloys, zinc aluminum alloys, and mixtures thereof. A surface treatment layer is bonded to the zinc layer, wherein the surface treatment layer is selected from the group consisting of a zinc/aluminum/rare earth alloy, phosphate, chromate and mixtures thereof. A first polymeric layer is bonded to the surface treatment layer, wherein the first polymeric layer is selected from the group consisting of a thermoplastic elastomer, an ionomer, a nylon, a fluoropolymer, and mixtures thereof. A second polymeric layer is bonded to the first polymeric layer, wherein the second polymeric layer is selected from the group consisting of a nylon, a thermoplastic elastomer, a fluoropolymer, and mixtures thereof. A process for manufacturing a multi-layer tubing for conveying fluids in a vehicle system comprises the step of extruding multiple layers of a melt-processible thermoplastic to a pretreated metal tube having an external surface with at least a zinc based coating and a sealant coating on top of the zinc based coating.

Abstract translation: 多层管包括具有与金属管外表面结合的外表面和锌层的金属管，其中锌层选自镀锌，锌镍合金，锌钴合金，锌铝合金 ，及其混合物。 表面处理层与锌层结合，其中表面处理层选自锌/铝/稀土合金，磷酸盐，铬酸盐及其混合物。 第一聚合物层结合到表面处理层，其中第一聚合物层选自热塑性弹性体，离聚物，尼龙，含氟聚合物及其混合物。 第二聚合物层结合到第一聚合物层，其中第二聚合物层选自尼龙，热塑性弹性体，含氟聚合物及其混合物。 用于制造用于在车辆系统中输送流体的多层管道的方法包括将具有可熔融加工的热塑性塑料的多层挤出到具有外表面的预处理金属管的步骤，所述外表面具有至少锌基涂层和密封剂涂层 锌基涂层顶部。

公开(公告)号：US5899233A

公开(公告)日：1999-05-04

申请号：US799544

申请日：1997-02-13

Applicant: David J. Haga ,  James D. McDaniel ,  Roger B. Nagel

Inventor： David J. Haga ,  James D. McDaniel ,  Roger B. Nagel

IPC: B22D19/00 ,  F16L55/10

CPC classification number: B22D19/0072 ,  Y10T428/12229 ,  Y10T428/12292 ,  Y10T428/12361

Abstract: An end fitting closes at least one end of a passageway having an external periphery and an internal periphery to be cast-in-place within a part. A fitting body has at least one elongated, blind-ended aperture formed therein. The aperture is defined at least in part by a first surface having a complimentary shape with respect to the external periphery of the cast-in-place passageway for receiving an end of the passageway disposed extending at least partially therein to close the passageway during casting of the part. The fitting body is composed of material essentially identical to material being used during casting of the part. The fitting body is positionable within a casting mold for forming the part to be cast, such that machining the cast part after casting opens the blind-end of the fitting to allow fluid flow through the passageway cast-in-place within the part. The end fitting may include a shaped aperture, such as a hexagonal shape or oval shape, for receiving a complimentary shaped nut on the conduit or complimentary shaped passageway to provide orientation of the passageway with respect to the fitting when connected thereto.

Abstract translation: 端部配件将具有外周边和内周边的通道的至少一端封闭在一部分内就地放置。 装配体具有形成在其中的至少一个细长的盲端孔。 所述孔至少部分地由第一表面限定，所述第一表面相对于现浇通道的外周具有互补形状，用于接收设置在其中的至少部分延伸的通道的端部，以在铸造期间关闭通道 那个部分。 配件主体由与铸件中使用的材料基本相同的材料组成。 配件主体可定位在用于形成待铸造部件的铸模内，使得铸造后的铸造部件的加工打开配件的盲端，以允许流体流过在部件内就位的通道。 端部配件可以包括诸如六边形或椭圆形的成形孔，用于在导管或互补的成形通道上接收互补的成形螺母，以在连接到通道时提供通道相对于配件的取向。

公开(公告)号：US5718459A

公开(公告)日：1998-02-17

申请号：US292911

申请日：1994-08-19

Applicant: Robert M. Davie ,  David L. Noone ,  Gary Klinger ,  Craig Cheney ,  Duane Pontbriand ,  Anthony Carman ,  George Szabo ,  James D. McDaniel

Inventor： Robert M. Davie ,  David L. Noone ,  Gary Klinger ,  Craig Cheney ,  Duane Pontbriand ,  Anthony Carman ,  George Szabo ,  James D. McDaniel

IPC: F16L37/08 ,  F16L19/028 ,  F16L37/084 ,  F16L37/088 ,  F16L55/00

CPC classification number: F16L37/084 ,  F16L19/028 ,  F16L37/088 ,  F16L2201/80 ,  Y10S285/906

Abstract: The present invention is a high pressure quick connector especially for use in connecting brake lines of a vehicle. The connector includes a housing which selectively receives a tube retainer cap. Retaining means such as a garter spring or snap ring allow for a low force insertion of the cap into the housing with an very high pull-off force. The cap is used to trap a tube with a bead upset, and the tube may be removed after the cap is unlocked. A second way of releasing the tube includes the use of a tube retainer plug selectively received in the cap, the upset trapped between the plug and cap. The plug can be removed while the cap is still locked in the housing, releasing the tube. A release tool may be used to unlock the cap from the housing. An insertion indicator ring is used to establish the locking of the cap within the housing. A dust boot prevents contaminants from interfering with the operation of the connector.

Abstract translation: 本发明是特别用于连接车辆制动线路的高压快速连接器。 连接器包括选择性地容纳管保持盖的壳体。 保持装置例如卡箍弹簧或卡环允许以非常高的牵引力将盖子小力插入壳体。 帽用于捕获具有胎圈镦粗的管，并且在帽被解锁之后可以移除管。 释放管的第二种方式包括使用选择性地容纳在盖中的管保持器塞，镦粗被困在插头和帽之间。 当盖子仍然锁定在壳体中时，可以移除插头，释放管子。 可以使用释放工具来将盖从壳体解锁。 插入指示器环用于建立壳体内的帽的锁定。 防尘罩防止污染物干扰连接器的操作。

公开(公告)号：US5638871A

公开(公告)日：1997-06-17

申请号：US452329

申请日：1995-05-26

Applicant: Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

Inventor： Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

IPC: B29C63/48 ,  B32B15/08 ,  B32B37/15 ,  F16L9/14 ,  F16L9/147 ,  F16L58/10 ,  F16L7/14

CPC classification number: F16L58/1009 ,  B29C63/486 ,  B32B15/08 ,  F16L58/1045 ,  F16L58/109 ,  F16L9/147 ,  B32B37/153 ,  Y10S138/07

Abstract: A multi-layer tube comprises a metal tube having an outer surface and a zinc layer bonded to the metal tube outer surface, wherein the zinc layer is selected from the group consisting of zinc plating, zinc nickel alloys, zinc cobalt alloys, zinc aluminum alloys, and mixtures thereof. A surface treatment layer is bonded to the zinc layer, wherein the surface treatment layer is selected from the group consisting of a zinc/aluminum/rare earth alloy, phosphate, chromate and mixtures thereof. A first polymeric layer is bonded to the surface treatment layer, wherein the first polymeric layer is selected from the group consisting of a thermoplastic elastomer, an ionomer, a nylon, a fluoropolymer, and mixtures thereof. A second polymeric layer is bonded to the first polymeric layer, wherein the second polymeric layer is selected from the group consisting of a nylon, a thermoplastic elastomer, a fluoropolymer, and mixtures thereof. A process for manufacturing a multi-layer tubing for conveying fluids in a vehicle system comprises the step of extruding multiple layers of a melt-processible thermoplastic to a pretreated metal tube having an external surface with at least a zinc based coating and a sealant coating on top of the zinc based coating.

Abstract translation: 多层管包括具有与金属管外表面结合的外表面和锌层的金属管，其中锌层选自镀锌，锌镍合金，锌钴合金，锌铝合金 ，及其混合物。 表面处理层与锌层结合，其中表面处理层选自锌/铝/稀土合金，磷酸盐，铬酸盐及其混合物。 第一聚合物层结合到表面处理层，其中第一聚合物层选自热塑性弹性体，离聚物，尼龙，含氟聚合物及其混合物。 第二聚合物层结合到第一聚合物层，其中第二聚合物层选自尼龙，热塑性弹性体，含氟聚合物及其混合物。 用于制造用于在车辆系统中输送流体的多层管道的方法包括将具有可熔融加工的热塑性塑料的多层挤出到具有外表面的预处理的金属管的步骤，所述外表面具有至少锌基涂层和密封剂涂层 锌基涂层顶部。

公开(公告)号：US5520223A

公开(公告)日：1996-05-28

申请号：US401011

申请日：1995-03-08

Applicant: Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

Inventor： Ralph A. Iorio ,  Robert M. Davie ,  James D. McDaniel ,  Frank L. Mitchell ,  Tao Nie

IPC: B29C63/48 ,  B32B1/08 ,  B32B15/08 ,  B32B37/15 ,  F16L9/147 ,  F16L58/10 ,  F16L11/04

CPC classification number: B32B15/08 ,  B29C63/486 ,  B32B1/08 ,  F16L58/1009 ,  F16L58/1045 ,  F16L58/109 ,  F16L9/147 ,  B32B37/153 ,  Y10T29/49888 ,  Y10T29/49906 ,  Y10T428/12549 ,  Y10T428/1359

Abstract: A multi-layer tube having a metal tube having an outer surface and a zinc layer bonded to the metal tube outer surface. The zinc layer being selected from the group consisting of zinc plating, zinc nickel alloys, zinc cobalt alloys, zinc aluminum alloys, and mixtures thereof. A surface treatment layer is bonded to the zinc layer, wherein the surface treatment layer is selected from the group consisting of a zinc/aluminum/rare earth alloy, phosphate, chromate and mixtures thereof. A first polymeric layer is bonded to the surface treatment layer, wherein the first polymeric layer is selected from the group consisting of a thermoplastic elastomer, an ionomer, a nylon, a fluoropolymer, and mixtures thereof. A second polymeric layer is bonded to the first polymeric layer, wherein the second polymeric layer is selected from the group consisting of a nylon, a thermoplastic elastomer, a fluoropolymer, and mixtures thereof. The tube also has a continuous interior layer made of non-reactive material which is preferably made of a polymeric material which is substantially non-reactive in the presence of short chain alcohols. The process for manufacturing the multi-layer tubing of the present invention also includes the steps of positioning a length of non-reactive tubing into the interior of unsealed metal tube, sealing the metal tube with the non-reactive tubing contained within and extruding multiple layers of a melt-processible thermoplastic onto the external surface metal tube the external surface can be pretreated with at least a zinc based coating and a sealant coating on top of the zinc based coating.

Abstract translation: 一种多层管，其具有金属管，该金属管具有外表面和锌层结合到金属管外表面。 锌层选自镀锌，锌镍合金，锌钴合金，锌铝合金及其混合物。 表面处理层与锌层结合，其中表面处理层选自锌/铝/稀土合金，磷酸盐，铬酸盐及其混合物。 第一聚合物层结合到表面处理层，其中第一聚合物层选自热塑性弹性体，离聚物，尼龙，含氟聚合物及其混合物。 第二聚合物层结合到第一聚合物层，其中第二聚合物层选自尼龙，热塑性弹性体，含氟聚合物及其混合物。 管还具有由非反应性材料制成的连续内层，其优选由在短链醇存在下基本上不反应的聚合材料制成。 用于制造本发明的多层管的方法还包括以下步骤：将一定长度的非反应性管材定位到非密封金属管的内部，用包含在其内并挤出多层的非反应性管道密封金属管 可熔融加工的热塑性材料在外表面金属管上，外表面可以用至少锌基涂层和在锌基涂层顶部的密封剂涂层进行预处理。