Patents
Sitemap › F16 - Engineering elements or units; General measures for producing and maintaining effective functioning of machines or installations; Thermal insulation in general › F16L - Pipes; Joints or fittings for pipes; Supports for pipes, cables or protective tubing; Means for thermal insulation in general › F16L 9 - Rigid pipes
Patents for F16L 9 - Rigid pipes (18,006)
04/2003
04/24/2003US20030075227 Thermoformed intake duct made of non-woven material with double bending
04/24/2003DE20218027U1 Hot water pipes with good high temperature strength and flexibility are of medium-density crosslinked polyethylene of specified melt flow index and melting point
04/23/2003EP1304518A1 Reinforced corrugated pipe and relative reinforcement method
04/23/2003EP1303722A2 High performance composite tubular structures
04/23/2003EP1303394A1 Shaped contoured crushable structural members and methods for making the same
04/23/2003EP1303393A1 Contoured metal structural members and methods for making the same
04/23/2003CN1412465A Steel-plastics composite pressure pipe and its production method
04/23/2003CN1411983A Continuous production equipment of steel-plastics composite pipe whose internal and external surfaces of holed steel skeleton are coated with adhesive
04/22/2003US6550502 Composite tube comprising an inner casing
04/22/2003CA2408810A1 Reinforced corrugated pipe and relative reinforcement method
04/17/2003WO2003031859A1 Dual pipe in a boiler
04/17/2003WO2003030830A2 Method and apparatus for improved stiffness in the linkage assembly of a flexible arm
04/17/2003WO2002045875A9 Integral ductwork diffuser
04/17/2003US20030070720 Barrier tubing
04/16/2003EP1301723A1 Structural members containing vibration damping mechanisms and methods for making the same
04/16/2003EP1301721A1 Coated contoured crushable structural members and methods for making the same
04/16/2003EP1301343A1 Singlelayer and multilayer polyolefin foam pipes
04/16/2003EP1301339A1 Contoured crushable composite structural members and methods for making the same
04/16/2003EP1301337A1 Cored contoured composite structural members and methods for making the same
04/16/2003EP1301335A1 Modified contoured crushable structural members and methods for making the same
04/16/2003CN2545630Y 管子 Tube
04/16/2003CN2545453Y 复合金属骨架塑料复合管 Composite metal skeleton plastic composite pipe
04/15/2003US6547287 Duct connecting system having integral transverse flanges
04/15/2003US6546963 Fire resistant piping system
04/10/2003WO2003029711A1 Gas-proof conduit
04/09/2003EP1299228A1 Waterproofed and reinforced plastic object and method for making same
04/09/2003CN1409807A Conduit system
04/09/2003CN1409041A Process for producing composite zinc-coated steel pipe with inner stainless steel lining
04/08/2003US6545093 Blend of a high molecular weight ethylene copolymer and a low molecular weight ethylene homo- or copolymer; environmental-stress-cracking resistance ESCR greater-than 150 h
04/03/2003WO2003027557A1 Barrier tubing
04/03/2003WO2003027555A2 Porous pipe
04/03/2003WO2003004207A3 Glossy tubes and pipes
04/03/2003CA2458728A1 Barrier tubing
04/02/2003EP1298380A2 Coating structure of a metal pipe and method of coating a metal pipe
04/02/2003EP1297910A1 High-strength steel pipe excellent in formability and burst characteristics
04/02/2003CN2542900Y Steel flange connected pipeline of glass fibre reinforced plastic
04/02/2003CN1407268A Atactic copolymerized polypropylene aluminium composite pipe and its manufacture
04/02/2003CN1407267A Steel plastic composite pipe for water supply and manufacture thereof
04/02/2003CN1407266A 复合管 Composite pipe
04/01/2003US6540848 High strength, high toughness, seamless steel pipe for line pipe
03/2003
03/27/2003WO2003025472A1 Air handling system ductwork component and method of manufacture
03/27/2003WO2003024685A1 Plastic pipe of triple layers using plastic salvage and its manufacturing method and apparatus
03/27/2003WO2002010270A9 White oil extrusion lubricant
03/27/2003CA2499728A1 Air handling system ductwork component and method of manufacture
03/26/2003EP1080296B1 Deformable liner tube
03/26/2003EP0636225B1 Multi-layer fuel and vapor tube
03/26/2003CN1103678C Corrugated synthetic resin pipe
03/25/2003US6538198 Marine umbilical
03/25/2003US6537630 Bow-molded hoses and apparatuses for producing the same
03/25/2003US6537484 Method for manufacturing a multi-layer plastic pipe
03/25/2003US6536480 High-pressure pipe element made of a hooded tube
03/25/2003US6536478 Multilayer fluid conduit
03/20/2003WO2003023269A1 Pliable air duct with dust and condensation repellency
03/20/2003WO2003022614A2 Low permeation nylon tube with aluminium barrier layer
03/20/2003WO2002087869A3 Improved composite tubing
03/20/2003US20030051764 Air handling system ductwork component and method of manufacture
03/19/2003EP1293269A1 Device and method for manufacturing soft metal tube
03/19/2003EP1169595A4 Multi-purpose underground utility conduit system
03/19/2003CN1404562A Flexible pipe element
03/19/2003CN1403731A Pipe bending structure using corrugated pipe
03/19/2003CN1403616A Low-carbon low-alloy steel and pipe
03/13/2003WO2002023074A3 Preformed channel for piping system
03/13/2003US20030050007 Pliable air duct with dust and condensation repellency
03/13/2003US20030049400 Low permeation nylon tube with aluminum barrier layer
03/13/2003US20030047228 Resin tube for automotive piping and method of fabricating the same
03/13/2003US20030047227 Device having a radial partition, especially for arresting the propagation of a radial buckle in a double-walled pipe in tended for great depts
03/13/2003DE20219222U1 Multi-layer polyolefin pipe, with co-extruded outer and inner pipes, has a reinforcement layer of fibers of the same polyolefin between them for a firm bond and increased strength
03/12/2003EP1291387A1 Heat resistant pipe and method of manufacture thereof
03/12/2003EP0910768B1 Multi-layer tubing assembly for fluid and vapor handling systems
03/12/2003EP0814917B1 Fluoropolymer composite tube and method of preparation
03/12/2003CN2539892Y Continuous winding all imbedded reinforcing plastic compound pipe
03/11/2003US6531199 Multiple coat metal pipe and its fabrication method
03/11/2003US6531019 Multiple coat metal pipe and its fabrication method
03/11/2003US6530352 Intake manifold or distributor with several pipes
03/05/2003EP1287973A1 Apparatus and process for manufacturing plastic-metal-plastic multilayered tubes
03/05/2003EP1286832A1 Multi-layered pipe
03/05/2003EP1286813A1 Method for manufacturing curved thermoplastic tubes
03/04/2003US6528137 Low-permeability, multilayer plastic pipe for carrying liquid or gaseous media; for transporting fuel
03/04/2003CA2401058A1 Arcuate double-layer pipe, and method of assembling an arcuate double-layer pipe
02/2003
02/27/2003WO2003016768A1 Composite pipe coated with fiber reinforced layer
02/26/2003EP1147004B1 Spiral wound pipe and a method for manufacturing the same
02/26/2003EP1087850B1 Bimetallic corrugated tube and process for its manufacturing
02/26/2003EP0868296B1 Use of cross-linked polyolefins material in pressure pipes
02/26/2003CN2537877Y Plastic lining composite pipe
02/26/2003CN2537876Y Plastic irregular inner lining tube
02/26/2003CN1398998A Low-temperature seam-less carbon steel pipe
02/25/2003US6524722 Corrugated structural metal plate
02/25/2003US6523575 Gutter outlet tube, stamping dies and method
02/20/2003WO2003014483A1 A waste removal system
02/20/2003WO2003013826A2 Manufacturing process and apparatus for making a helical rib tube
02/20/2003US20030035760 Enhanced heat conductive device for supply device of hydrogen source, and supply device of hydrogen source having same
02/20/2003CA2455234A1 Manufacturing process and apparatus for making a helical rib tube
02/19/2003CN2536879Y Zinc-aluminum and coating corrosionproof oil pipe
02/19/2003CN2536878Y Corrosionproof thermal pipe with anodic trip
02/19/2003CN2536877Y Zinc-aluminum alloy corrosionproof pipe
02/19/2003CN2536876Y High-temperature resistance thermal heating pipeline
02/19/2003CN2536875Y Polyurethane corrosionproof thermal insulating pipeline
02/19/2003CN2536874Y Composite pipe with steel bar reinforced concrete layer, resin layer and quartz sand layer
02/19/2003CN2536873Y Composite water pipe
02/19/2003CN2536872Y Stainless steel composite water pipe
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