| Patents for F16L 9 - Rigid pipes (18,006) |
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| 07/31/2013 | CN203099124U Single-wall spiral hush pipe |
| 07/31/2013 | CN203099123U Double-channel large-caliber water supply and sewerage steel-plastic pipe |
| 07/31/2013 | CN203099122U High-anti-impact, silencing and anti-static polyvinyl chloride pipe |
| 07/31/2013 | CN203099121U Helical welded pipe with reinforcing ribs |
| 07/31/2013 | CN203099120U Carbon-steel-reinforced spiral weld pipe of stainless steel structure |
| 07/31/2013 | CN203099119U Plastic-coated carbon steel helical-structure welded pipe |
| 07/31/2013 | CN203099118U Epoxy resin impregnated glass fiber tape continuously-enhanced composite tube |
| 07/31/2013 | CN203099117U Belt material with reinforcing ribs |
| 07/31/2013 | CN203099116U Double-layer durable water pipe |
| 07/31/2013 | CN203099115U Rustproof steel-strip reinforced-frame polyethylene helical bellows |
| 07/31/2013 | CN203099114U Novel HDPE (High-Density Polyethylene) corrugated pipe with high strength |
| 07/31/2013 | CN203099113U Cracking and laminating-proof industrial liquid conveying pipeline |
| 07/31/2013 | CN203099112U Novel steel belt pipe |
| 07/31/2013 | CN203099111U Outer sleeve pipe for steam direct burial thermal insulation pipe |
| 07/31/2013 | CN203099110U Compound pipeline and pipe fitting |
| 07/31/2013 | CN203099109U High-intensity steel skeleton polyethylene (HPE) spiral corrugated pipe |
| 07/31/2013 | CN203099108U Novel steel pipe |
| 07/31/2013 | CN203099107U Buried double-rib strengthened polypropylene reinforced tube |
| 07/31/2013 | CN203099106U High-strength PE pipe |
| 07/31/2013 | CN203099105U Polyethylene (PE) water supply pipe with wear-resistant coating |
| 07/31/2013 | CN203093152U Double-color three-layer co-extrusion polyethylene (PE) pipe |
| 07/31/2013 | CN103225719A Lined prestressed steel cylinder concrete pipe having epoxy protective layer on inner wall |
| 07/31/2013 | CN103225718A Embedded prestressed steel cylinder concrete pipe having epoxy protective layer on inner wall |
| 07/31/2013 | CN103225717A Preheating pipeline of cremator |
| 07/31/2013 | CN103225716A Method for preparing anti-microbial, anti-oxygen, anti-ultraviolet and light-resisting composite pipe |
| 07/31/2013 | CN102661452B Tube-framework plastic composite tube and producing process thereof |
| 07/31/2013 | CN102515019B Fixing device for steel pipes with lap joint flanges and method for coating plastics on steel pipes by aid of fixing device |
| 07/31/2013 | CN102465236B Method for producing X70 or X80 high-strain steel tube |
| 07/31/2013 | CN102235555B Method for producing continuous fiber reinforced plastic composite pipeline and pipeline produced thereby |
| 07/31/2013 | CN102046270B Modular membrane housing, membrane housing elements and method for the production thereof |
| 07/31/2013 | CA2801654A1 Fluid transport structure with melt-processed fluoropolymer liner |
| 07/30/2013 | US8497005 Highly abrasion-resistant grafted polyolefin pipe |
| 07/26/2013 | CA2803502A1 A phased array system and method for inspecting hellical submerged arcs weld (hsaw) |
| 07/25/2013 | WO2013109669A1 Internally heated fluid transfer pipes with internal helical heating ribs |
| 07/25/2013 | US20130186503 Corrosion mitigation system and method |
| 07/25/2013 | US20130186469 Multi-layered tubing |
| 07/25/2013 | DE102012001076A1 Verfahren zur Erhöhung einer Dauerfestigkeit eines Hohlkörpers und dazugehörigen Hohlkörper A method of increasing fatigue strength of a hollow body and associated hollow body |
| 07/24/2013 | EP2618035A1 Duct element for pipelines used in air conditioning system and fitting pieces for connecting said duct elements |
| 07/24/2013 | EP2617981A2 A method for increasing fatigue strength of a hollow body and corresponding hollow bodies |
| 07/24/2013 | CN203082404U Steel pipe connecting structure and pipeline |
| 07/24/2013 | CN203082391U Noise reduction trapezoid return duct |
| 07/24/2013 | CN203082390U Glass reinforced plastic reinforced composite steel pipe |
| 07/24/2013 | CN203082389U Glass fiber reinforced hollow wall polyethylene wound pipe |
| 07/24/2013 | CN203082388U High-strength hollow circular steel skeleton winding and reinforcing hollow tube |
| 07/24/2013 | CN203082387U Hollow tube wound by high-strength hollow circular steel framework |
| 07/24/2013 | CN203082386U High-strength hollow circular steel skeleton winding pipe |
| 07/24/2013 | CN203082385U High-strength hollow circular steel skeleton winding and reinforcing corrugated pipe |
| 07/24/2013 | CN203082384U Modified phenolic foam aluminum foil composite heat preservation air duct |
| 07/24/2013 | CN203082383U Fiber-reinforced inflaming-retarding antistatic thin-walled steel-plastic composite pipe |
| 07/24/2013 | CN203082382U Prefabricated overhead thermal insulation pipe |
| 07/24/2013 | CN203082381U Steel pressure pipe with functions of steel pipe stiffening ring and wall-attaching outer drainage |
| 07/24/2013 | CN203082380U Rust-proof water heating pipe |
| 07/24/2013 | CN203082379U Thermometal wear-resisting composite tube |
| 07/24/2013 | CN203082378U Pipeline on inlet end of vacuum pump and vacuum pump component |
| 07/24/2013 | CN203075845U Antibacterial stainless steel composite water tube |
| 07/24/2013 | CN103221772A Heat conduction member |
| 07/24/2013 | CN103216722A Novel universal change-over tube |
| 07/24/2013 | CN103216687A Dual tube and connecting structure thereof |
| 07/24/2013 | CN103216686A A method for increasing fatigue strength of a hollow body and corresponding hollow bodies |
| 07/24/2013 | CN103216685A Aging-prevention irrigation water pipe and manufacturing method thereof |
| 07/24/2013 | CN103216684A Non-inflammable and stepping-preventing composite thermal insulation pipe |
| 07/24/2013 | CN103216683A Production technology of FRP (Fiber Reinforce Plastic) composite corundum ceramic pipe and product thereof |
| 07/24/2013 | CN103216682A Composite tube and manufacture method thereof |
| 07/24/2013 | CN103216100A Adjustable cement pouring pipe structure |
| 07/24/2013 | CN103216099A Cement pouring pipe structure |
| 07/24/2013 | CN103215522A Low-carbon nickel-iron-chromium alloy stainless-steel seamless pipe |
| 07/24/2013 | CN103215519A Main steam pipeline for supercritical thermal power generating unit |
| 07/24/2013 | CN103215494A Re-containing seamless Cr-Mo-V type alloy steel pipe and production method thereof |
| 07/24/2013 | CN103215473A Low-carbon nickel-chromium-molybdenum-niobium alloy stainless-steel seamless pipe |
| 07/24/2013 | CN103214743A High temperature deformation-resistant modified polypropylene random (PPR) copolymer tube and preparation method thereof |
| 07/24/2013 | CN102382929B Production technology of 37Mn5 steel |
| 07/24/2013 | CN102216348B Propylene-hexene random copolymer produced in the presence of a metallocene catalyst |
| 07/24/2013 | CN102009471B Glass fiber reinforced plastics composite tube, equipment and method for manufacturing same through continuous winding |
| 07/23/2013 | US8491744 Method for the production of a cylindrical, strand-shaped part |
| 07/18/2013 | US20130181438 Nested dual drill pipe |
| 07/18/2013 | US20130180616 Double Pipe and Coupling Structure for the Pipe |
| 07/18/2013 | US20130180472 Double-walled tube, method of manufacturing double-walled tube and steam generator |
| 07/18/2013 | CA2860908A1 Nested dual drill pipe |
| 07/18/2013 | CA2860904A1 Seal assembly for nested dual drill pipe |
| 07/17/2013 | EP2614283A2 Anti-static and lightning compatible transport element |
| 07/17/2013 | CN203068053U Water pipe |
| 07/17/2013 | CN203067983U Stable type steel pipe |
| 07/17/2013 | CN203067982U Vacuum heat-insulation and energy-conservation conveying pipeline for thermal fluid |
| 07/17/2013 | CN203067981U Large-caliber buried double-flat wall plastic steel drain pipe |
| 07/17/2013 | CN203067980U Steel belt reinforced steel mesh framework plastic composite pipe |
| 07/17/2013 | CN203067979U Production line of large-caliber buried double-flat wall plastic steel drain pipes |
| 07/17/2013 | CN203067978U Composite oil pipe with anti-corrosion wear-resistant inner lining |
| 07/17/2013 | CN203067977U Corrugated pipe for post-stressed concrete |
| 07/17/2013 | CN203067976U Steel-plastic complex pipe |
| 07/17/2013 | CN203067975U Pressure-resistant structure of PVC (polyvinyl chloride) pipe |
| 07/17/2013 | CN203067974U Reinforcing structure of PVC (polyvinyl chloride) pipe |
| 07/17/2013 | CN203067973U Glass fiber reinforced plastic compound pipeline |
| 07/17/2013 | CN203067972U Concrete conveying pipeline |
| 07/17/2013 | CN203067971U Fuel rubber tube of turbocharger |
| 07/17/2013 | CN203067970U Fuel rubber tube structure of turbocharger |
| 07/17/2013 | CN203067969U Glass fiber reinforcing plastic pipe |
| 07/17/2013 | CN203067968U Pvc pipe structure |
| 07/17/2013 | CN203067967U Pipe wall structure of PVC (polyvinyl chloride) pipe |
| 07/17/2013 | CN203067966U PVC (polyvinyl chloride) pipe structure |
| 07/17/2013 | CN203067965U Abrasion-resistant compound pipe long in service life |